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 Forum index » DIY Hardware and Software » Lunettas - circuits inspired by Stanley Lunetta
Audio to different outputs
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squarewhite



Joined: Jun 06, 2007
Posts: 62
Location: Asia

PostPosted: Sat Jan 07, 2012 9:29 am    Post subject: Audio to different outputs Reply with quote  Mark this post and the followings unread

hi,

i'm trying to build a 'disturbutor' for 1 audio signal into different outputs. My outputs at this point are speakers. I'm sending 1 line signal to a the 4051 and the outputs of the 4051 (8 outs) to 8 individual LM386 and then to speakers.
I'm triggering the A, B, C inputs of the 4051 through a 4060. Everything is working; my audio goes from 1st speaker to the 8th speaker and back. The only problem I have is a clicking sound through all the 8 speakers and also the sound doesn't really mute (there's low noise) going through all the 8 speakers.

How can i eliminate the clicks from the speakers? any advice?

best
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Blue Hell
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Joined: Apr 03, 2004
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PostPosted: Sat Jan 07, 2012 9:38 am    Post subject: Re: Audio to different outputs Reply with quote  Mark this post and the followings unread

squarewhite wrote:
How can i eliminate the clicks from the speakers? any advice?


Can not really be eliminated, whenever audio signals are hard switched there will be clicks. The solution is to fade rather than switch, but that is more complicated. You may be able to find dedicated audio switches that can do the job and then use your current multiplexer in digital mode to control those switches.

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squarewhite



Joined: Jun 06, 2007
Posts: 62
Location: Asia

PostPosted: Sat Jan 07, 2012 9:53 am    Post subject: Reply with quote  Mark this post and the followings unread

any advice on what audio switches i could use or maybe some direction where i should look for these?
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Blue Hell
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PostPosted: Sat Jan 07, 2012 9:56 am    Post subject: Reply with quote  Mark this post and the followings unread

They used to be made for hifi amps and such to do switching stuff.
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Blue Hell
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Joined: Apr 03, 2004
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G2 patch files: 318

PostPosted: Sat Jan 07, 2012 9:58 am    Post subject: Reply with quote  Mark this post and the followings unread

An other way would be to use VCA's - but that is a lot of circuitry.
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