Would you like to leverage a pre-built module perhaps such as @Hearinspace linked to in #13 above?
Could be modified to interface it with your LED voltage control signal, or something similar could probably be interfaced to the LED voltage. Or, you could make something more or less from scratch.
Another question would be whether you would like the dac to be in mute mode by default or unmuted by default. IOW, do you want the relay to be energized during a mute, or un-energised during a mute?
Could be modified to interface it with your LED voltage control signal, or something similar could probably be interfaced to the LED voltage. Or, you could make something more or less from scratch.
Another question would be whether you would like the dac to be in mute mode by default or unmuted by default. IOW, do you want the relay to be energized during a mute, or un-energised during a mute?
I suppose any thing that might avoid the POP would work for me. And my less tolerant “better side”. Can’t blame her. My speakers are very sensitive, so these pops are really jarring! I was thinking that the relays would be N.O., and closed when energized. How would I modify that device to work off the LED voltage?
Use a transistor to monitor the LED voltage (with a current limiting resistor). Then use that to trigger a timer which controls the relay, maybe such as a CMOS 555:
https://www.ti.com/lit/ds/symlink/lmc555.pdf?ts=1747374344159
Also: https://archive.org/details/IC_Timer_Cookbook_1st_Ed_1977_Walter_G_Jung
https://www.me.psu.edu/cimbala/me345/Lectures/The_555_Timer_IC.pdf
http://www.sophphx.caltech.edu/Physics_5/Data_sheets/555appnote.pdf
Don't know how much help you want or need, but I think its good if you are willing to take this as an opportunity to learn maybe a little more about how to diy this type of thing, then maybe worth doing a little reading. Feel free to ask any questions if you want. Or if that's not your thing then we can help more directly.
What I would suggest to do if you want to use a preexisting module, is read about how timers work, then use that to figure out how the module works. From there its only a short bit more to trigger a timer from your LED signal. OTOH, if you want to make something from scratch then that's fine too. In any case, you need to decide how you would like to proceed from here.
Reason I suggest trying to figure out for yourself as much as you can is because its an extremely useful skill to have once you start to get a little experience under your belt.
https://www.ti.com/lit/ds/symlink/lmc555.pdf?ts=1747374344159
Also: https://archive.org/details/IC_Timer_Cookbook_1st_Ed_1977_Walter_G_Jung
https://www.me.psu.edu/cimbala/me345/Lectures/The_555_Timer_IC.pdf
http://www.sophphx.caltech.edu/Physics_5/Data_sheets/555appnote.pdf
Don't know how much help you want or need, but I think its good if you are willing to take this as an opportunity to learn maybe a little more about how to diy this type of thing, then maybe worth doing a little reading. Feel free to ask any questions if you want. Or if that's not your thing then we can help more directly.
What I would suggest to do if you want to use a preexisting module, is read about how timers work, then use that to figure out how the module works. From there its only a short bit more to trigger a timer from your LED signal. OTOH, if you want to make something from scratch then that's fine too. In any case, you need to decide how you would like to proceed from here.
Reason I suggest trying to figure out for yourself as much as you can is because its an extremely useful skill to have once you start to get a little experience under your belt.
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With muting relays, I've found that NC types (closed = muting on) are more foolproof.
Don't ask me how.
Don't ask me how.
