how to design multi-channel audio output

omid_safari · 25th October 2009, 07:36 PM

hi
i need about 10-20 audio channel in one computer.
i think multiplexer is needed for this job.
but at first i don't know use a sound card or usb port for my output.
or may need to design a external circuit?
thanks

gooki · 26th October 2009, 11:22 AM

Is each channel carrying a different signal?

omid_safari · 26th October 2009, 01:40 PM

yes.
i like use it for multi channel phone answer.

peranders · 26th October 2009, 02:40 PM

Can't you just buy an audio interface?

26 in , 26 out
M-AUDIO - ProFire 2626 - High-Definition 26-in/26-out FireWire Audio Interface with Octane Preamp Technology

human.bin · 26th October 2009, 03:10 PM

for phone things there are servers like asterix, maybe this can be done just using ip devices or so... worth a look

dangus · 29th October 2009, 02:04 AM

If you can afford that many phone lines, can't you just buy an appropriate box to do that? There must be plenty of used or surplus office phone systems that include features like voicemail.

Buying 10 to 20 phone answering machines wouldn't cost much. 10 to 20 obsolete PCs would cost nothing, apart from the space and power and cooling. Voicemodems should cost next to nothing. Network them, and it shouldn't be hard to update the outgoing message on them all at once.

25th October 2009, 07:36 PM	#1
omid_safari diyAudio Member Join Date: Oct 2009	how to design multi-channel audio output hi i need about 10-20 audio channel in one computer. i think multiplexer is needed for this job. but at first i don't know use a sound card or usb port for my output. or may need to design a external circuit? thanks

26th October 2009, 02:40 PM	#4
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	Can't you just buy an audio interface? 26 in , 26 out M-AUDIO - ProFire 2626 - High-Definition 26-in/26-out FireWire Audio Interface with Octane Preamp Technology __________________ /Per-Anders (my first name) or P-A as my friends call me

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26th October 2009, 11:22 AM	#2
gooki diyAudio Member Join Date: Dec 2008	Is each channel carrying a different signal?

26th October 2009, 01:40 PM	#3
omid_safari diyAudio Member Join Date: Oct 2009	yes. i like use it for multi channel phone answer.

26th October 2009, 03:10 PM	#5
human.bin diyAudio Member Join Date: May 2008	for phone things there are servers like asterix, maybe this can be done just using ip devices or so... worth a look

29th October 2009, 02:04 AM	#6
dangus diyAudio Member Join Date: May 2004 Location: Vancouver Island	If you can afford that many phone lines, can't you just buy an appropriate box to do that? There must be plenty of used or surplus office phone systems that include features like voicemail. Buying 10 to 20 phone answering machines wouldn't cost much. 10 to 20 obsolete PCs would cost nothing, apart from the space and power and cooling. Voicemodems should cost next to nothing. Network them, and it shouldn't be hard to update the outgoing message on them all at once.

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