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Muting Circuits For Audio
https://www.sound-au.com/articles/muting.html
To un-mute the audio, a negative voltage is applied to the gate, turning off the JFET and removing the 'short' it creates. Unlike a relay, JFETs have significant resistance when turned on. The J11x series are often used as muting devices, and while certainly effective, the source impedance has to be higher than with a relay.
audio - Analog Mute Circuit - Simplest Solution ...
https://electronics.stackexchange.com/questions/425769/analog-mute-circuit-simplest-solution
The PCM510xA devices have two auto-mute functions to mute the device upon power loss (intentional or unintentional). XSMT = 0. When the XSMT pin is pulled low, the incoming PCM data is attenuated to 0, closely followed by a hard analog mute. This process takes 150 sample times (ts ) + 0.2 ms.
Eliminate Clicks When Muting Single-Ended Audio ...
https://www.electronicdesign.com/technologies/analog/article/21790874/eliminate-clicks-when-muting-singleended-audio
To effectively mute all signal frequencies, the value of C should be properly selected: C >> 1/ (2 × Π × f × R1) where f is the signal’s frequency. To avoid loss of gain, R should be much ...
Preamp Muting Circuit | audioXpress
https://audioxpress.com/article/preamp-muting-circuit
The article was originally published in audioXpress, March 2010. Oftentimes a muting circuit for the output of a preamp is left out of DIY applications as an unnecessary or annoying part of the project. This is usually due to the lack of awareness that a simple circuit can perform such a duty. Anyone who occasionally forgets to turn the power ...
Muting Transistor Attenuator Circuits and the 2SC2878 ...
https://www.electroschematics.com/muting-transistor-attenuator-circuits-2sc2878/
In mixers and audio line & level equipment, the muting circuit may also be employed to select /deselect various input channels –such must be done cleanly or quietly. Types of muting circuits. Obviously, the function of muting circuits is to mute (kill) the audio signal.
Build a simple, soft-action muting switch - EDN
https://www.edn.com/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.Potentiometer R 2, set to twice Q 1 's cutoff voltage, makes the on/off transition times roughly equal. R 2 and D 3 quickly discharge C 1 and mute …
Mute audio signal via relay | All About Circuits
https://forum.allaboutcircuits.com/threads/mute-audio-signal-via-relay.152271/
I would therefore like to find a way to mute the headphones when I transmit and unmute when I receive only. Solution: My thought was to do this via some sort of relay that the audio signal passes through, that is a "normally on" and that interrupts the headphone connection when it is triggered.
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