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83-665: Google Nest , previously named Google Home , is a line of smart speakers developed by Google under the Google Nest brand. The devices enable users to speak voice commands to interact with services through Google Assistant , the company's virtual assistant . Both in-house and third-party services are integrated, allowing users to listen to music, control playback of videos or photos, or receive news updates entirely by voice. Google Nest devices also have integrated support for home automation , letting users control smart home appliances with their voice command. The first device, Google Home,

166-425: A right section . If a right section of a cylinder is a circle then the cylinder is a circular cylinder. In more generality, if a right section of a cylinder is a conic section (parabola, ellipse, hyperbola) then the solid cylinder is said to be parabolic, elliptic and hyperbolic, respectively. For a right circular cylinder, there are several ways in which planes can meet a cylinder. First, planes that intersect

249-501: A machine learning chip that can cache voice recognition data for commonly used commands locally. It contains LED lights that highlight the touch areas for volume control and makes use of "ultrasound sensing", allowing for findability in dark environments. The back of the Nest Mini contains a hole for wall-mounting with a screw. It is available in the colors "chalk", "charcoal", "coral", and "sky blue". On September 30, 2020, Google released

332-504: A speaker grille , which is designed to be removed and replaced with one that suits the decor of a room. As of November 2016, Google offers fabric shells in "Mango", "Marine", and "Violet" color finishes, and metallic shells in "Carbon", "Copper", and "Snow" finishes. The Information reported that Google Home's internal hardware was very similar to that of the Chromecast , with the same ARM processor and Wi-Fi chip. In November 2016,

415-630: A wireless speaker to compete against the Amazon Echo . Google Home was officially announced at the company's developer conference in May 2016, where it was also announced that Home would run the Google Assistant (a conversational evolution of Google Now intended to be integrated in other products announced at the conference as well). In October 2016, the iOS and Android mobile app used to initially set up Google Home and Google's other streaming devices

498-536: A 19 and 35 percent discrepancy for the former and a 2 and 20 percent discrepancy for the latter. The North American Chapter of the Association for Computational Linguistics (NAACL) also identified a discrepancy between male and female voices. According to their research, Google's speech recognition software is 13 percent more accurate for men than women. It performs better than the systems used by Bing , AT&T , and IBM. The built-in microphone in smart speakers

581-598: A Qualcomm system-on-chip , the Home Hub utilizes a different hardware platform. The device is available in light grey, dark grey, pink, and aqua blue. A reported security issue in the Home Hub was dismissed by Google as a non-issue, as an attack would require access to the same Wi-Fi network as the device. On May 7, 2019, the Google Home Hub was rebranded and renamed to the Google Nest Hub . On May 25, 2021, an update for

664-404: A base in at most one point. A plane is tangent to the cylinder if it meets the cylinder in a single element. The right sections are circles and all other planes intersect the cylindrical surface in an ellipse . If a plane intersects a base of the cylinder in exactly two points then the line segment joining these points is part of the cylindric section. If such a plane contains two elements, it has

747-414: A central hub to control smart devices. Examples of supported devices include the Chromecast digital media player, and products from Nest , SmartThings , Philips Hue , LIFX , LightwaveRF, and Logitech Harmony . In May 2017, Google announced multiple updates to Google Home's functionality. Google's speakers could now support hands-free calling, letting users make calls to any landline or mobile phone in

830-488: A centralized, visual interface for controlling supported smart home devices and Nest video cameras (other vendors such as Wyze and Arlo can also be streamed). Unlike its closest competitor, the Amazon Echo Show , the Home Hub does not include a camera for video calls, citing customer privacy concerns. Although Google has developed an OEM solution for Assistant-powered smart display devices based on Android Things and

913-540: A closed window, from another building across the street, using a laser. Cylinder (geometry) A cylinder (from Ancient Greek κύλινδρος ( kúlindros )  'roller, tumbler') has traditionally been a three-dimensional solid , one of the most basic of curvilinear geometric shapes . In elementary geometry , it is considered a prism with a circle as its base. A cylinder may also be defined as an infinite curvilinear surface in various modern branches of geometry and topology . The shift in

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996-425: A common integration technique for finding volumes of solids of revolution. In the treatise by this name, written c.  225 BCE , Archimedes obtained the result of which he was most proud, namely obtaining the formulas for the volume and surface area of a sphere by exploiting the relationship between a sphere and its circumscribed right circular cylinder of the same height and diameter . The sphere has

1079-438: A cylinder are congruent figures. If the elements of the cylinder are perpendicular to the planes containing the bases, the cylinder is a right cylinder , otherwise it is called an oblique cylinder . If the bases are disks (regions whose boundary is a circle ) the cylinder is called a circular cylinder . In some elementary treatments, a cylinder always means a circular cylinder. The height (or altitude) of

1162-403: A cylinder is the perpendicular distance between its bases. The cylinder obtained by rotating a line segment about a fixed line that it is parallel to is a cylinder of revolution . A cylinder of revolution is a right circular cylinder. The height of a cylinder of revolution is the length of the generating line segment. The line that the segment is revolved about is called the axis of

1245-403: A cylinder's surface with a plane . They are, in general, curves and are special types of plane sections . The cylindric section by a plane that contains two elements of a cylinder is a parallelogram . Such a cylindric section of a right cylinder is a rectangle . A cylindric section in which the intersecting plane intersects and is perpendicular to all the elements of the cylinder is called

1328-412: A cylindrical surface and two parallel planes is called a (solid) cylinder . The line segments determined by an element of the cylindrical surface between the two parallel planes is called an element of the cylinder . All the elements of a cylinder have equal lengths. The region bounded by the cylindrical surface in either of the parallel planes is called a base of the cylinder. The two bases of

1411-461: A device that is less capable than an Android phone?". Smart speaker As of winter 2017, it is estimated by NPR and Edison Research that 39 million Americans (16% of the population over 18) own a smart speaker. A smart speaker with a touchscreen is known as a smart display. It is a smart device that integrates conversational user interface with display screens to augment voice interaction with images and video. They are powered by one of

1494-404: A distance, calling the latter "absolutely incredible". He noted the device's limiting of its Bluetooth capabilities at the time (before the May 2017 update), however, writing that "it's important to know that Google Home is not a Bluetooth speaker; it's purely a Google Cast device. If you want to play audio on a Google Home, the service needs to have a Google Cast button". He similarly criticized

1577-522: A fabric top that its white-colored status lights shine through. It has a mute switch rather than a mute button, and uses a micro USB connection for power. It is available in the colors "aqua", "chalk", "charcoal", and "coral". Analysts compared the Google Home Mini to Amazon's equivalent Echo Dot model. Prior to its release, a "phantom input" bug was discovered, where its touch-sensitive surface—which could be tapped to activate Assistant without using

1660-461: A hotword command—inadvertently activated on its own, resulting in unwanted voice recording. Due to privacy concerns, Google removed the feature entirely from all units via a software update. In December 2017, Google released an update to Home Mini, allowing users to long-press the volume buttons to play and pause audio. During its October 4, 2017, event, Google unveiled the Google Home Max , which

1743-459: A lack of interoperability between other Google Assistant-enabled devices was criticized. Critics also expressed concerns about Google's intentions with the device, particularly whether or not features would be more tightly integrated into other Google products. David Pierce of Wired compared Google Home to Amazon Echo , writing in a summary that "Sometimes Home feels like sci-fi magic. Sometimes it reaches beyond its grasp and falls flat. The Echo

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1826-796: A larger, more expensive variant that was released on December 11, 2017. The Google Home and Home Mini were released in India on April 10, 2018, and the Nest Hub was released on August 26, 2019. As of May 8, 2018, the Google Home was planned for release in Denmark , South Korea , Mexico , the Netherlands , Norway , Spain , and Sweden . On May 7, 2019, during the Google I/O keynote, Google announced that all of their smart home products will henceforth be marketed under

1909-476: A partnership to make smart home products work together. To use Google Assistant , a user of any Nest / Google Home device must register and sync an account using the Google Home mobile app. In the app, a setting allows the user to teach Google Assistant their voice. The Google voice technology can be used in digital forensics , where the words "OK, Google" are capable of unlocking mobile locks. A mobile device can be found, unlocked, and data can be extracted through

1992-860: A personality for the Assistant, with a long-term goal being to invoke a sense of emotional rapport in users. Various forms of both in-house and third-party services are integrated into Google Home, allowing users to speak voice commands to control interaction with them. Examples of supported services include Google Play Music , Spotify and iHeartRadio for audio, Netflix , YouTube and Google Photos for videos and photos, Google Calendar and Google Keep for tasks, and CNN , CNBC , BBC and The Wall Street Journal for news updates. New services are integrated on an ongoing basis. Users are able to connect and group together multiple speakers connected to or as part of Google Home for synchronized playback of music in every room. A notable feature omission, multiple accounts,

2075-407: A plane not parallel to the given line. Such cylinders have, at times, been referred to as generalized cylinders . Through each point of a generalized cylinder there passes a unique line that is contained in the cylinder. Thus, this definition may be rephrased to say that a cylinder is any ruled surface spanned by a one-parameter family of parallel lines. A cylinder having a right section that

2158-405: A rectangle as a cylindric section, otherwise the sides of the cylindric section are portions of an ellipse. Finally, if a plane contains more than two points of a base, it contains the entire base and the cylindric section is a circle. In the case of a right circular cylinder with a cylindric section that is an ellipse, the eccentricity e of the cylindric section and semi-major axis a of

2241-399: A right cylinder, is more generally given by L = e × p , {\displaystyle L=e\times p,} where e is the length of an element and p is the perimeter of a right section of the cylinder. This produces the previous formula for lateral area when the cylinder is a right circular cylinder. A right circular hollow cylinder (or cylindrical shell )

2324-409: A single real line (actually a coincident pair of lines), or only at the vertex. These cases give rise to the hyperbolic, parabolic or elliptic cylinders respectively. This concept is useful when considering degenerate conics , which may include the cylindrical conics. A solid circular cylinder can be seen as the limiting case of a n -gonal prism where n approaches infinity . The connection

2407-542: A single real point.) If A and B have different signs and ρ ≠ 0 {\displaystyle \rho \neq 0} , we obtain the hyperbolic cylinders , whose equations may be rewritten as: ( x a ) 2 − ( y b ) 2 = 1. {\displaystyle \left({\frac {x}{a}}\right)^{2}-\left({\frac {y}{b}}\right)^{2}=1.} Finally, if AB = 0 assume, without loss of generality , that B = 0 and A = 1 to obtain

2490-504: A teardown of the original model by iFixit confirmed that the device featured many of the same hardware components as the second-generation Chromecast. Google unveiled the Google Home Mini during a hardware-focused event on October 4, 2017, which was released on October 19, 2017. It is a variant of Google Home with the same overall functionality, but in a smaller pebble -like form factor around 4 inches (10 cm) in diameter, with

2573-411: A volume two-thirds that of the circumscribed cylinder and a surface area two-thirds that of the cylinder (including the bases). Since the values for the cylinder were already known, he obtained, for the first time, the corresponding values for the sphere. The volume of a sphere of radius r is ⁠ 4 / 3 ⁠ π r = ⁠ 2 / 3 ⁠ (2 π r ) . The surface area of this sphere

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2656-421: Is 4 π r = ⁠ 2 / 3 ⁠ (6 π r ) . A sculpted sphere and cylinder were placed on the tomb of Archimedes at his request. In some areas of geometry and topology the term cylinder refers to what has been called a cylindrical surface . A cylinder is defined as a surface consisting of all the points on all the lines which are parallel to a given line and which pass through a fixed plane curve in

2739-401: Is a cylindrical speaker that is 5.62 inches (143 millimetres) tall and 3.79 inches (96 millimetres) in diameter. The top surface of the device features colored status LEDs , and features capacitive touch controls to start and stop music, and adjust volume. A mute button is located on the back of the device, which disables the microphones. The base of the device is covered by a shell acting as

2822-756: Is a generalization of the equation of the ordinary, circular cylinder ( a = b ). Elliptic cylinders are also known as cylindroids , but that name is ambiguous, as it can also refer to the Plücker conoid . If ρ {\displaystyle \rho } has a different sign than the coefficients, we obtain the imaginary elliptic cylinders : ( x a ) 2 + ( y b ) 2 = − 1 , {\displaystyle \left({\frac {x}{a}}\right)^{2}+\left({\frac {y}{b}}\right)^{2}=-1,} which have no real points on them. ( ρ = 0 {\displaystyle \rho =0} gives

2905-613: Is a three-dimensional region bounded by two right circular cylinders having the same axis and two parallel annular bases perpendicular to the cylinders' common axis, as in the diagram. Let the height be h , internal radius r , and external radius R . The volume is given by V = π ( R 2 − r 2 ) h = 2 π ( R + r 2 ) h ( R − r ) . {\displaystyle V=\pi \left(R^{2}-r^{2}\right)h=2\pi \left({\frac {R+r}{2}}\right)h(R-r).} Thus,

2988-638: Is an ellipse , parabola , or hyperbola is called an elliptic cylinder , parabolic cylinder and hyperbolic cylinder , respectively. These are degenerate quadric surfaces . When the principal axes of a quadric are aligned with the reference frame (always possible for a quadric), a general equation of the quadric in three dimensions is given by f ( x , y , z ) = A x 2 + B y 2 + C z 2 + D x + E y + G z + H = 0 , {\displaystyle f(x,y,z)=Ax^{2}+By^{2}+Cz^{2}+Dx+Ey+Gz+H=0,} with

3071-503: Is continuously listening for "hot words" followed by a command. However, these continuously listening microphones also raise privacy concerns among users. These include what is being recorded, how the data will be used, how it will be protected, and whether it will be used for invasive advertising. Furthermore, an analysis of Amazon Echo Dots showed that 30–38% of "spurious audio recordings were human conversations", suggesting that these devices capture audio other than strictly detection of

3154-1082: Is less impressive, but more reliable". Pierce praised the look of Google Home, writing that it feels "minimalist, thoughtful, and warm" in the environment, and also praised its speaker, describing it as "richer, brighter and more dynamic than the Echo, and loud enough to fill a room". While noting that Home's use of the Google Assistant functioned in different ways than it does through the Allo app or Pixel smartphone , meaning quick instructions rather than longer tasks, he praised its search abilities, writing that "you’d expect Home to excel at search. It does", despite some wrong search hiccups. Pierce criticized its lack of interoperability with other Google Assistant-enabled devices, though he called its future potential for connecting information across Google's product lines "enormous". Ron Amadeo of Ars Technica praised Google Home's setup process and its ability to pick up voice commands even from

3237-469: Is not unique to voice assistants; as more and more devices come online, there is an increasing trade-off between convenience and privacy. While there are many factors influencing smart speaker adoption, specifically with regards to privacy, Lau et al. define five distinct categories as pros and cons: convenience, identity as an early adopter, contributing factors, perceived lack of utility, privacy, and security concerns. Tennant et al. explored adoption using

3320-425: Is the diameter of the circular top or bottom. For a given volume, the right circular cylinder with the smallest surface area has h = 2 r . Equivalently, for a given surface area, the right circular cylinder with the largest volume has h = 2 r , that is, the cylinder fits snugly in a cube of side length = altitude ( = diameter of base circle). The lateral area, L , of a circular cylinder, which need not be

3403-636: Is the equation of an elliptic cylinder . Further simplification can be obtained by translation of axes and scalar multiplication. If ρ {\displaystyle \rho } has the same sign as the coefficients A and B , then the equation of an elliptic cylinder may be rewritten in Cartesian coordinates as: ( x a ) 2 + ( y b ) 2 = 1. {\displaystyle \left({\frac {x}{a}}\right)^{2}+\left({\frac {y}{b}}\right)^{2}=1.} This equation of an elliptic cylinder

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3486-426: Is the only type of geometric figure for which this technique works with the use of only elementary considerations (no appeal to calculus or more advanced mathematics). Terminology about prisms and cylinders is identical. Thus, for example, since a truncated prism is a prism whose bases do not lie in parallel planes, a solid cylinder whose bases do not lie in parallel planes would be called a truncated cylinder . From

3569-408: Is the product of the area of a base and the height. For example, an elliptic cylinder with a base having semi-major axis a , semi-minor axis b and height h has a volume V = Ah , where A is the area of the base ellipse (= π ab ). This result for right elliptic cylinders can also be obtained by integration, where the axis of the cylinder is taken as the positive x -axis and A ( x ) = A

3652-407: Is very strong and many older texts treat prisms and cylinders simultaneously. Formulas for surface area and volume are derived from the corresponding formulas for prisms by using inscribed and circumscribed prisms and then letting the number of sides of the prism increase without bound. One reason for the early emphasis (and sometimes exclusive treatment) on circular cylinders is that a circular base

3735-664: The Google Nest Audio , which acts as the successor to the original Google Home and incorporates some design elements of the Home Max. Google Assistant , an intelligent personal assistant , is included as the main and only assistant in Google Home. Unlike its predecessor, Google Now , Assistant is able to engage in two-way conversations with users. The Wall Street Journal reported in October 2016 that Google hired writers from Pixar movies and The Onion satirical newspaper to develop

3818-640: The Google Nest Hub Max , was announced on May 7, 2019. It features a 10-inch (1280 x 800) display, integrated camera (which can be used for face recognition, Google Duo video calls, and as a security camera), and larger speakers with a rear-facing subwoofer. It was released in September 2019. On October 15, 2019, Google unveiled a second-generation model of the Home Mini branded as the Google Nest Mini . It

3901-606: The Nest brand. Nest had been subsumed by Google's home hardware unit in July 2018. On July 10, 2019, a report published by Belgian broadcaster VRT NWS managed to gain access to more than a thousand audio excerpts recorded by Google Assistant in Belgium and the Netherlands. The audio files were sent to Google employees to develop Google Assistant's speech technology. According to the VRT NWS report, 153 of

3984-409: The parabolic cylinders with equations that can be written as: x 2 + 2 a y = 0. {\displaystyle x^{2}+2ay=0.} In projective geometry , a cylinder is simply a cone whose apex (vertex) lies on the plane at infinity . If the cone is a quadratic cone, the plane at infinity (which passes through the vertex) can intersect the cone at two real lines,

4067-416: The solid of revolution generated by rotating a rectangle about one of its sides. These cylinders are used in an integration technique (the "disk method") for obtaining volumes of solids of revolution. A tall and thin needle cylinder has a height much greater than its diameter, whereas a short and wide disk cylinder has a diameter much greater than its height. A cylindric section is the intersection of

4150-489: The surface area of a right circular cylinder, oriented so that its axis is vertical, consists of three parts: The area of the top and bottom bases is the same, and is called the base area , B . The area of the side is known as the lateral area , L . An open cylinder does not include either top or bottom elements, and therefore has surface area (lateral area) L = 2 π r h {\displaystyle L=2\pi rh} The surface area of

4233-426: The technology acceptance model and identified factors influencing expected usefulness, ease of use, and attitudes toward smart speaker devices in the context of home care support. The authors describe some of the critical challenges in designing for this context given the potential impact of the voice assistant's personality on someone's perspective of the care situation and a user's desire for intelligent support from

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4316-479: The 1,000 audio files should have never been recorded and during which the command "OK Google" was clearly not given. In some cases, the recordings included "bedroom conversations, conversations between parents and their children, but also blazing rows and professional phone calls containing lots of private information". Google defended the practice in a blog post: "As part of our work to develop speech technology for more languages, we partner with language experts around

4399-404: The 1913 text Plane and Solid Geometry by George A. Wentworth and David Eugene Smith ( Wentworth & Smith 1913 ). A cylindrical surface is a surface consisting of all the points on all the lines which are parallel to a given line and which pass through a fixed plane curve in a plane not parallel to the given line. Any line in this family of parallel lines is called an element of

4482-405: The Assistant's lack of cross-device functionality, writing that "Pretty much all the actions you send to a Google Home will stay on that Google Home, and there's never an interaction with your phone", and he noted concerns and questions regarding whether Google has an intention to incorporate the functionality deeper into its product lines. Additionally, in his summary, he wrote that "Why pay $ 129 for

4565-588: The Preview Program released to the first generation model replaced the Linux -based Cast OS with Google Fuchsia , becoming the first commercial device to ever feature the operating system. On March 30, 2021, a second generation of the Google Nest Hub was released. The second generation sported 50% more bass and a sleep sensor. The Nest Hub kept its 7-inch touchscreen. A larger version of the Google Nest Hub, called

4648-692: The United States can subscribe to "Nest Aware". "Nest Aware" allows users to contact emergency call center located close to the residents home. This security feature works when users are inside of the home and when you are away on vacation. "Proactive Assistance" enables the device to dictate updates to users without being asked, including updates on traffic before a scheduled event. "Visual Responses" let users send answers from Google Home onto their mobile device or Chromecast-enabled television. The device now also supports Bluetooth audio streaming through compatible devices (including phones, tablets and computers), and

4731-519: The United States, Canada and later, the UK for free using a virtual number generated by google integrated into the device. In December 2021 an update to Google's Terms of Service restricted the feature of calling through Google Nest speakers to only numbers that are on the user's contacts. Google Voice users can set Google Home with voice number to make personal and business calls. There is no 9-1-1 emergency services support, however, Google Home users who live in

4814-453: The United States; proactive reminders ahead of scheduled events; visual responses on mobile devices or Chromecast -enabled televisions; Bluetooth audio streaming; and the ability to add reminders and calendar appointments. The original Google Home speaker released in November 2016 featured a cylindrical shape with colored status LEDs on top. In October 2017, Google announced two additions to

4897-494: The ability to schedule calendar appointments, with upcoming support for reminders. On March 28, 2018, Google made the announcement via their blog that users would be able to pair any of their Google Home devices to their own Bluetooth speakers without requiring the use of a Chromecast streamer. On November 5, 2018, Google announced their partnership with Disney to bring interactive read-along books to Google Home. In 2019, Apple , Google , Amazon , and Zigbee Alliance announced

4980-453: The area of each elliptic cross-section, thus: V = ∫ 0 h A ( x ) d x = ∫ 0 h π a b d x = π a b ∫ 0 h d x = π a b h . {\displaystyle V=\int _{0}^{h}A(x)dx=\int _{0}^{h}\pi abdx=\pi ab\int _{0}^{h}dx=\pi abh.} Using cylindrical coordinates ,

5063-424: The base of a circular cylinder has a radius r and the cylinder has height h , then its volume is given by V = π r 2 h {\displaystyle V=\pi r^{2}h} This formula holds whether or not the cylinder is a right cylinder. This formula may be established by using Cavalieri's principle . In more generality, by the same principle, the volume of any cylinder

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5146-440: The basic meaning—solid versus surface (as in a solid ball versus sphere surface)—has created some ambiguity with terminology. The two concepts may be distinguished by referring to solid cylinders and cylindrical surfaces . In the literature the unadorned term cylinder could refer to either of these or to an even more specialized object, the right circular cylinder . The definitions and results in this section are taken from

5229-904: The coefficients being real numbers and not all of A , B and C being 0. If at least one variable does not appear in the equation, then the quadric is degenerate. If one variable is missing, we may assume by an appropriate rotation of axes that the variable z does not appear and the general equation of this type of degenerate quadric can be written as A ( x + D 2 A ) 2 + B ( y + E 2 B ) 2 = ρ , {\displaystyle A\left(x+{\frac {D}{2A}}\right)^{2}+B\left(y+{\frac {E}{2B}}\right)^{2}=\rho ,} where ρ = − H + D 2 4 A + E 2 4 B . {\displaystyle \rho =-H+{\frac {D^{2}}{4A}}+{\frac {E^{2}}{4B}}.} If AB > 0 this

5312-663: The common voice assistants and offer controls for smart home devices, feature streaming apps, and web browsers with touch controls for selecting content. The first smart displays were introduced in 2017 by Amazon ( Amazon Echo ). According to a study by Proceedings of the National Academy of Sciences of the United States of America released In March 2020, the six biggest tech development companies, Amazon , Apple , Google , Yandex , IBM and Microsoft , have misidentified more words spoken by " black people " than " white people ". The systems tested errors and unreadability, with

5395-479: The cylinder and it passes through the centers of the two bases. The bare term cylinder often refers to a solid cylinder with circular ends perpendicular to the axis, that is, a right circular cylinder, as shown in the figure. The cylindrical surface without the ends is called an open cylinder . The formulae for the surface area and the volume of a right circular cylinder have been known from early antiquity. A right circular cylinder can also be thought of as

5478-437: The cylindric section depend on the radius of the cylinder r and the angle α between the secant plane and cylinder axis, in the following way: e = cos ⁡ α , a = r sin ⁡ α . {\displaystyle {\begin{aligned}e&=\cos \alpha ,\\[1ex]a&={\frac {r}{\sin \alpha }}.\end{aligned}}} If

5561-399: The cylindrical surface. From a kinematics point of view, given a plane curve, called the directrix , a cylindrical surface is that surface traced out by a line, called the generatrix , not in the plane of the directrix, moving parallel to itself and always passing through the directrix. Any particular position of the generatrix is an element of the cylindrical surface. A solid bounded by

5644-542: The device subsequently became available for pre-order in Canada on June 2, 2017, with a retail date of June 26. In July 2017, Google announced the release of Google Home in Australia on July 20, 2017, France on August 3, 2017, Germany on August 8, 2017, and Italy on March 27, 2018. On October 4, 2017, Google announced Google Home Mini, a smaller, less expensive variant that was released on October 19, 2017, as well as Google Home Max,

5727-490: The environment (including placement and sources of noise) and time of day. Reviewers compared the Home Max to Sonos smart speakers and Apple's HomePod . The Google Home Max was discontinued from sale on December 14, 2020. On October 9, 2018, Google unveiled the Google Home Hub , which features a 7-inch (1024 x 600) touchscreen display that can be used to provide visual feedback for queries. The "Home View" feature provides

5810-612: The hot word. There are strong concerns that the ever-listening microphone of smart speakers presents a perfect candidate for wiretapping . In 2017, British security researcher Mark Barnes showed that pre-2017 Echos have exposed pins which allow for a compromised OS to be booted. While voice assistants provide a valuable service, there can be some hesitation towards using them in various social contexts, such as in public or around other users. However, only more recently have users begun interacting with voice assistants through an interaction with smart speakers rather than an interaction with

5893-408: The phone. On the phone, most voice assistants have the option to be engaged by a physical button (e.g., Siri with a long press of the home button) rather than solely by hot word-based engagement in a smart speaker. While this distinction increases the privacy by limiting when the microphone is on, users felt that having to press a button first removed the convenience of voice interaction. This trade-off

5976-531: The product lineup, the miniature puck-shaped Google Home Mini and a larger Google Home Max. In October 2018, the company released the Google Home Hub, a smart speaker with a 7-inch touchscreen. In May 2019, Google announced that Google Home devices would be rebranded under the Google Nest banner, and it unveiled the Nest Hub Max, a larger smart display. In March 2016, reports were published about Google developing

6059-438: The solid right circular cylinder is made up the sum of all three components: top, bottom and side. Its surface area is therefore A = L + 2 B = 2 π r h + 2 π r 2 = 2 π r ( h + r ) = π d ( r + h ) {\displaystyle A=L+2B=2\pi rh+2\pi r^{2}=2\pi r(h+r)=\pi d(r+h)} where d = 2 r

6142-424: The technology. When configured without authentication , smart speakers can be activated by people other than the intended user or owner. For example, visitors to a home or office, or people in a publicly accessible area outside an open window, partial wall, or security fence, may be able to be heard by a speaker. One team demonstrated the ability to stimulate the microphones of smart speakers and smartphones through

6225-426: The use of a suspect's voice file. "Hey Google" can also be used to wake up the device. Some features of Nest devices require the voice to be verified as to determine if the user is the owner. The device can also tell if it is connected to other smart devices, which can find stored data. The original Google Home received favorable reviews. The Google Home's design and sound input/output received significant praise, while

6308-477: The volume of a cylindrical shell equals 2 π  ×   average radius ×   altitude ×  thickness. The surface area, including the top and bottom, is given by A = 2 π ( R + r ) h + 2 π ( R 2 − r 2 ) . {\displaystyle A=2\pi \left(R+r\right)h+2\pi \left(R^{2}-r^{2}\right).} Cylindrical shells are used in

6391-554: The volume of a right circular cylinder can be calculated by integration V = ∫ 0 h ∫ 0 2 π ∫ 0 r s d s d ϕ d z = π r 2 h . {\displaystyle {\begin{aligned}V&=\int _{0}^{h}\int _{0}^{2\pi }\int _{0}^{r}s\,\,ds\,d\phi \,dz\\[5mu]&=\pi \,r^{2}\,h.\end{aligned}}} Having radius r and altitude (height) h ,

6474-466: The world who understand the nuances and accents of a specific language," Google wrote. "These language experts review and transcribe a small set of queries to help us better understand those languages. This is a critical part of the process of building speech technology and is necessary to creating products like the Google Assistant." In October 2021, the Google Home branding returned as a smart home platform for developers. The original Google Home model

6557-509: Was criticized by JR Raphael of Computerworld in November 2016, but an update for users in the United States in April 2017 enabled the feature. Google Home can recognize up to six different voices, pulling information from their different accounts depending on who's talking. Google Home has integration with each user's calendar, for adding reminders or appointments verbally. Google Home includes home automation features, enabling owners to use it as

6640-549: Was released in the United States in November 2016; subsequent product releases have occurred globally since 2017. Through software updates to Google Nest devices and Google Assistant, additional functionality has been added over time. For example, multiple speakers can be set up for synchronized playback of music. An update in April 2017 brought multi-user support, allowing the device to distinguish between up to six people by voice. In May 2017, Google announced multiple updates, including: hands-free phone calling at no cost in Canada and

6723-494: Was released on December 11, 2017. It is a larger version of the Google Home device with stereo speakers (including two tweeters and subwoofers), an audio connector (input), and a USB Type-C connector intended for a wired Ethernet adapter. It was released in the colors "chalk" and "charcoal", and has a magnetically attached stand for vertical orientation, and "Smart Sound", an adaptive audio system that uses machine learning to automatically adjust sound output based on factors such as

6806-404: Was released on October 22. The device is similar in design to the first-generation Home Mini with several small improvements. The fabric of the Nest Mini is made of recycled consumer plastic bottles. The device is powered by a proprietary pin-style DC plug with higher energy input and reliability than the previous iteration's Micro-USB. The upgrades include a larger speaker, an additional microphone,

6889-447: Was renamed from "Google Cast" to "Google Home", leaving Google Cast as the name solely of the protocol that "sends" audio/video content to play back on another device. The Google Home smart speaker was released in the US on November 4, 2016, and in the UK on April 6, 2017. In May 2017, Google announced that Home would be heading to Australia, Canada, France, Germany, and Japan in middle 2017, and

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