5-607: IRN may refer to: Input-referred noise Independent Radio News , a news service to commercial radio stations in the United Kingdom Independent Radio News (New Zealand) , not affiliated with the United Kingdom company above International Rivers Network , a non-profit environmental organization based in California, United States Imperial Russian Navy ,
10-453: A dozen other sources, but those can all be thought of as an imaginary acoustic noise source injecting sound into the (now noiseless) microphone. The units on this noise are no longer volts , but units of sound pressure ( pascals or dBSPL ), which can be directly compared to the desired sound pressure inputs. This is called equivalent input noise (EIN), or input-referred noise (IRN), or referred-to-input (RTI) noise . A device which uses
15-612: Is a method of referring to the signal or noise level at the output of a system as if it were due to an input to the same system. This input's value is called the Equivalent input . This is accomplished by removing all signal changes (e.g. amplifier gain , transducer sensitivity , etc.) to get the units to match the input. A microphone converts acoustical energy to electrical energy. Microphones have some level of electrical noise at their output. This noise may have contributions from random diaphragm movement, thermal noise , or
20-534: The navy of the Russian Empire Iran (ISO 3166-1 alpha-3 country code) Indian-ringnecked parakeet (abbreviated IRN), the subspecies Psittacula krameri manillensis of the rose-ringed parakeet Islamic Council Norway , Islamsk RÃ¥d Norge Italian Royal Navy , the navy of the Kingdom of Italy Topics referred to by the same term [REDACTED] This disambiguation page lists articles associated with
25-539: The title IRN . If an internal link led you here, you may wish to change the link to point directly to the intended article. Retrieved from " https://en.wikipedia.org/w/index.php?title=IRN&oldid=1204441439 " Category : Disambiguation pages Hidden categories: Short description is different from Wikidata All article disambiguation pages All disambiguation pages Input-referred noise Equivalent input (also input-referred , referred-to-input ( RTI ), or input-related ),
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