Audio Mute Transistor

Muting Transistor Attenuator Circuits and the 2SC2878 ...

https://www.electroschematics.com/muting-transistor-attenuator-circuits-2sc2878/

Muting Circuits For Audio

https://www.sound-au.com/articles/muting.html

To make the signal audible again, a transistor is turned on that energises the relay coil and removes the short. This can be done after a power-on delay, or at the touch of a button (local or remote). With a bit of extra circuitry, the mute can …

Muting an audio signal with a transistor - General ...

https://forum.arduino.cc/t/muting-an-audio-signal-with-a-transistor/246666

Junction of photocell and 1k resistor to the amp. Glue a big LED, as close to the size of the photocell as possible, to the photocell. Paint it all black or enclose it in black heat shrink. Turn the LED on, photocell goes low resistance and mutes. Some signal may still get through, but it should be very quiet.

US7734265B2 - Audio muting circuit and audio muting …

https://patents.google.com/patent/US7734265B2/en

Cleanest Transistor for Audio ON/OFF Switching

https://www.diystompboxes.com/smfforum/index.php?topic=118655.0

Audio output muting circuit - All About Circuits

https://forum.allaboutcircuits.com/threads/audio-output-muting-circuit.177462/

A 100k resistor will likely not mute the signal, you would need more like 100Ω. ... The reverse breakdown on the emitter is very high so it will not clip the audio signal. KTD1302 is also designed for this kind of use. You can use other transistors such as the 2N2222 just be careful not to exceed the emitter-base breakdown voltage. Reactions: ...

Audio Activated Delay Switch Using Transistors - DIY …

https://circuits-diy.com/audio-activated-delay-switch-using-transistors-diy-project/

Audio Switch Notes - Neat Circuits

https://www.neatcircuits.com/audiosw/index.html

The circuit below is an example of a simple audio switch: Values are not critical so experiment for best results. 2N2222 or any signal NPN transistor is used to invert the control logic if required. Note there is no power required This voltage can be from +5 to +15 volts. The circuit should mute sufficiently any audio from 15 hz to 20 khz.

Transistor soft-mute | AVR Freaks

https://www.avrfreaks.net/forum/transistor-soft-mute

I need to soft-mute (no clicking noises) an audio signal. I thought to use a BJT NPN transistor with the collector hooked up to the signal, the emitter hooked to GND and the base is fed binary control voltage from an AVR through an RC low pass filter.