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I checked proc/asound/cards aftre connecting a USB sound card. and it listed both PC sound card and
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USB sound card as [HD] - usb soundcard and [PCH] - pc sound card.<br>
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However when I started jack with <br>
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jackd -d alsa -d hw:HD and printed the ports it was showing only one two ports (left & right).
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I want both PC and USB sound card ports to be accessed at the same time. <br>
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How to enable all sound card input and output ports ?</div>
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-ben<br>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Jack-Devel <jack-devel-bounces@lists.jackaudio.org> on behalf of David Kastrup <dak@gnu.org><br>
<b>Sent:</b> Sunday, January 14, 2018 3:38 PM<br>
<b>To:</b> jack-devel@lists.jackaudio.org<br>
<b>Subject:</b> Re: [Jack-Devel] Using USB sound card with Jack</font>
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<div class="PlainText">Benny Alexandar <ben.alex@outlook.com> writes:<br>
<br>
> Hi,<br>
><br>
> I'm using latest jack audio server version jackd 1.9.12. I have built<br>
> simple client.c app<br>
> and able to capture audio from microphone input and play it out.<br>
><br>
> I have another USB soundcard which is connected to pc through USB.<br>
> How to get input from USB soud card ?<br>
><br>
> After connecting USB sound card and when printed the ports[] array<br>
> after executing the jack API jack_get_ports()<br>
> I could see only PC microphone capture ports, not showing USB ports.<br>
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Start jackd as<br>
<br>
jackd -d alsa -d hw:1 ...<br>
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Instead of hw:1 you may use whatever ALSA decides to call this device<br>
(cf the verbose name in [...] in /proc/asound/cards: if it is<br>
[Satellite ], -d hw:Satellite may word).<br>
<br>
-- <br>
David Kastrup<br>
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