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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 Circuits For Audio - sound-au.com
https://www.sound-au.com/articles/muting.html
Analog Devices used to make ICs called the SSM2402 and SSM2412 that included a three JFET 'T' attenuator and a complete controller circuit for a two channel audio switching and/or muting circuit. They have been discontinued, and there doesn't appear to be a replacement.
Audio Switch Notes - Neat Circuits
https://www.neatcircuits.com/audiosw/index.html
The circuit should mute sufficiently any audio from 15 hz to 20 khz. Mute level should *easily* reach -50db. If not, you don't have the circuit wired correctly. This circuit will also fade by providing a variable voltage at the junction of the 33k and 1M0 resistors (R3 and R4). The fade will be low in distortion until -20 db has been reached.
Soft-Action Mute Switch - EEWeb
https://www.eeweb.com/soft-action-mute-switch/
This simple circuit is a line-level audio signal muting switch based on a soft-action power on/off process. When the S1 switch is closed, R4, C1 and Q4 JFET quietly ground the signal to be muted in between 100 to 200 ms and the RED indicator light goes on. When the S1 is opened the signal is released and the GREEN led goes on.
ON/OFF Touch Controlled Mute Switch with 555 IC
https://www.electroschematics.com/touch-control-mute-switch/
Here is another simple circuit to mute the volume of Audio devices through simple touch. It exploits the action of the flip-flops in the timer IC 555 to reduce the volume of the Audio amplifier. IC NE555 is designed in the toggle mode. Its lower and upper comparator inputs are connected to the touch plates which can be membrane switches or two pieces of conducting …
Build a simple, soft-action muting switch - EDN
https://www.edn.com/build-a-simple-soft-action-muting-switch/
Build a simple, soft-action muting switch. The circuit in Figure 1 adds a soft muting switch with power-up/power-down muting to a line-level audio circuit. R 4 , C 1 , and JFET Q 1 quietly ground a signal in 100 to 200 msec when you close S 1 or release it when you open S 1 .
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.
Eliminate Clicks When Muting Single-Ended Audio ...
https://www.electronicdesign.com/technologies/analog/article/21790874/eliminate-clicks-when-muting-singleended-audio
The muting circuit only requires four components: a resistor (R), a capacitor (C), a diode (D), and the switch (Sw). When the microphone circuit has power, capacitor C charges until it …
Audio output muting circuit | All About Circuits
https://forum.allaboutcircuits.com/threads/audio-output-muting-circuit.177462/
I wanted to get rid of this with a muting circuit of some sort but i really can't find good informations about it around. some say don't use relays, some say don't use Jfet.. My application is stereo and the idea was to tie a Spdt Relay to the psitive rail so that when the power goes off, the switch will connect each output to ground via a 100k ...
Sound Activated Automatic Amplifier Mute Circuit ...
https://www.homemade-circuits.com/sound-operated-automatic-amplifier-mute/
Sound Activated Automatic Amplifier Mute Circuit. The following article presents a simple sound operated/activated amplifier muting circuit which enables the amplifier to silence itself as soon a voice or an external sound occurs across the detector MIC. The circuit was requested by Mr. Seok Sothea.
Muting Relay PCB - Pete Millett's DIY Audio pages
http://www.pmillett.com/muting_relay_pcb.html
Muting Relay PCB. DIY Audio Home. Muting relay PCB. NOTE: The BOM and schematic incorrectly calls out 1N5821 rectifier diodes. These don't mechanically fit on the PCB. use 1N5817 or silimar 1A diodes instead. With cap-coupled preamps and single-ended power amps in particular, there is often a "thump" heard in the speakers when powering up. I switch the power …
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