<div dir="ltr"><br><div class="gmail_extra"><br><br><div class="gmail_quote">2013/11/15 harishjennykn <span dir="ltr"><<a href="mailto:harishjennykn@yahoo.com" target="_blank">harishjennykn@yahoo.com</a>></span><br><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
Are you able to get any sound from your USB sound card ?<br>
<br>
Does this pipeline make any sound ?<br>
gst-launch audiotestsrc ! alsasink ?<br>
<br>
In any case you might have to specify the device name , for example 'hw:0,1'<br>
or 'hw:1,0'<br>
<br>
<br></blockquote><div>hi ,<br><br></div><div>the pipeline can play .wav file, <br></div><div>it is fail when the pipeline play .mp3 file.<br></div><div>since the audio data feed to usb sound is either 0x00 or 0xFF,<br><br>
</div><div>no sound heard from usb sound card.<br></div></div><br></div></div>