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From: Xuebing Wang <xbing6@gmail.com>
To: alsa-devel@alsa-project.org,
	richard Jiang <Richard.Jiang@infocus.com>,
	niranjan Patil <Niranjan.Patil@infocus.com>
Subject: [USB UAC2] How to route pcm stream for UAC2 virtual sound card for lowest latency?
Date: Tue, 10 Mar 2015 16:27:33 +0800	[thread overview]
Message-ID: <54FEAAF5.1090306@gmail.com> (raw)

Hi Community,

I am developing a commercial product based on Freescale iMX6SL + UAC2.

I can get UAC2 working for below command. 'hw:1,0' is the virtual sound 
card. 'hw:0,0' is the physical sound card.
export RATE=44100; arecord -D hw:1,0 -c 2 -r $RATE -f S16_LE | aplay -c 
2 -r $RATE -f S16_LE &

Any suggestions on what is the best way to get PCM stream from UAC2 
virtual sound card and feed to the physical sound card, for the lowest 
latency purpose?

Thanks.

-- 
Xuebing

             reply	other threads:[~2015-03-10  8:27 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-10  8:27 Xuebing Wang [this message]
2015-03-10  8:30 ` [USB UAC2] How to route pcm stream for UAC2 virtual sound card for lowest latency? Clemens Ladisch

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