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Muting Circuits For Audio
https://www.sound-au.com/articles/muting.html
The relay is wired so that the normally closed contacts simply short the signal to earth (ground). Until the relay is activated, the signal is muted, and because the contact resistance is typically only a few milliohms, there's no need to add resistance to the circuit that provides the audio signal (typically an opamp).
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 …
Muting Relay ..... buzzing | diyAudio
https://www.diyaudio.com/community/threads/muting-relay-buzzing.143808/
The 22uF holds the relay closed in between the pulses from the AC signal. The first transistor pulls the 100k to near ground voltage every half cycle and then allows the 1uF to recharge in between each AC peak. If the 100r and the relay (plus it's diodes) were swapped you can add a fast closing and faster off action to the relay.
fire alarm audio mute relay? - Speakerplans.com Forums ...
https://forum.speakerplans.com/fire-alarm-audio-mute-relay_topic39186.html
Quote Reply Topic: fire alarm audio mute relay? Posted: 16 May 2010 at 8:36pm: Is there a device available on the market that will cut of an audio signal when fed a 24vdc feed from the fire panel? Had a look in google but don't think my key word selection was any good. Any help would be much appreciated. Bryan.
Audio output muting circuit | All About Circuits
https://forum.allaboutcircuits.com/threads/audio-output-muting-circuit.177462/
tried a relay solution and N Jfet solutions and both have pros and cons. N channel jfet gives a bit of sound distorsion when the voltage slowly descend towards 0. Relay completely cut away but can hear the transient as a sort of click (negligible).
PAGING CONTROLLED RELAY | Radio Design Labs
https://www.rdlnet.com/blog/tips/paging-controlled-relay/
on PAGING CONTROLLED RELAY. Turn on a visual indicator, mute a local sound system or switch loudspeaker loads anytime your paging system is active. The RDL TX-PCR1 Paging Controlled Relay can accomplish these chores and more. Simply connect the input of the TX-PCR1 to any 25 V, 70 V or 100 V (8 Ohm up to 75 Watts) speaker line, adjust the sensitivity …
Stream your PC audio to your phone - AudioRelay
All audio. Stream what you hear on your computer to your phone. Low delay. Your PC audio is sent in realtime. It results in less latency than with bluetooth. Multiple devices. Send your music to multiple rooms, wirelessly listen with multiple people. Multitask. Listen to your PC and your phone at the same time. Get started. 1.
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