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Stereo audio mute circuit - Zenith Electronics Corporation
https://www.freepatentsonline.com/5103315.html#:~:text=An%20audio%20mute%20circuit%20includes%20a%20pair%20of,and%20supplied%20through%20LEDs%20from%20two%20delay%20circuits.
Muting Transistor Attenuator Circuits and the 2SC2878 ...
https://www.electroschematics.com/muting-transistor-attenuator-circuits-2sc2878/
Types of muting circuits. Obviously, the function of muting circuits is to mute (kill) the audio signal. This can be done in a number of ways including switches, relay contacts, junction FETs, analog switches and bipolar muting transistors. Switch and relay contacts can be noisy and intermittent due to contact bounce.
Muting Circuits For Audio - sound-au.com
https://www.sound-au.com/articles/muting.html
The ideal mute circuit will attenuate the signal in the absence of power, so the signal is muted by default. It needs an active system to allow the mute to be removed, which will be done after all circuitry has had time to settle after power is applied.
Muting Transistor Attenuator Circuits and the 2SC2878
https://www.diyaudio.com/community/attachments/muting-transistor-attenuator-circuits-and-the-2sc2878-pdf.1017514/
A muting transistor has very low ON resistance –in the order of 1Ω. With a 1K audio signal source. resistance, it provides 60db attenuation –this is much better than the best analog switches in the ON mode. In audio mixer applications additional attenuation (perhaps 80db) is recommended to completely silence.
US7734265B2 - Audio muting circuit and audio muting …
https://patents.google.com/patent/US7734265B2/en
An audio muting circuit according to another aspect of the present invention is an audio muting circuit muting an audio signal, and includes: a mute signal generation circuit outputting, in a...
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