req: automatic audio singal source switcher

Request a new device/modular module, and hope that some enterprising developer grants your wish!

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pranza
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req: automatic audio singal source switcher

Post by pranza » Mon Jun 23, 2014 5:40 am

hi!

i remember one very handy feature of rme digi 96/8 PAD card: you could set up what's being output if wave output is not active.
i'd like the same with pulsar: a simple signal source switcher which has two stereo inputs and one stereo output. output relays stream no1 unless there is a stream no2 present, in that case it relays stream no2 and first one is muted.

p

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capacitor
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Re: req: automatic audio singal source switcher

Post by capacitor » Mon Jun 23, 2014 10:32 am

Gut reaction from here is a Modular patch. Would that work?

Going forward, you could tweak the internals as needed.

Let me know. I hope to get my card back in action this week, can put together a Mod3 patch.

Immanuel
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Re: req: automatic audio singal source switcher

Post by Immanuel » Mon Jun 23, 2014 3:13 pm

You can do that with a sidechain limiter and a tiny mixer.
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capacitor
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Re: req: automatic audio singal source switcher

Post by capacitor » Mon Jun 23, 2014 3:50 pm

...even easier :)

pranza
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Re: req: automatic audio singal source switcher

Post by pranza » Tue Jun 24, 2014 5:26 am

thanks for replies

well, is sidechainer kosher enough? i mean would that mixer-limiter thingie be bit transparent?

Immanuel
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Re: req: automatic audio singal source switcher

Post by Immanuel » Tue Jun 24, 2014 1:36 pm

If A is the input, that should mute B, you use A as the sidechain input for the limiter which is being fed with audio from B. Set the threshold at -96 and the ratio at inf. That should do it. If this is not enough ... repeat.
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pranza
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Re: req: automatic audio singal source switcher

Post by pranza » Mon Jun 30, 2014 4:10 pm

thanks!
made it, works.. but threshold is max -60 in standard sfp limiter, so not purist enough, not bit transparent for sure, but does the job :)

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