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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Why don't you use arecord|aplay directly? Like: </span><span style='font-size:10.0pt;font-family:"Courier New";color:red;background:white'>arecord -f S16_LE -r 8000 -D hw:1,0 | aplay<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black;background:white'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>If using GStreamer, you need </span>audioconvert.<o:p></o:p></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Courier New";color:black;background:white'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0in 0in 0in'><p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'>From:</span></b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif"'> gstreamer-devel-bounces+charlie=sensoray.com@lists.freedesktop.org [mailto:gstreamer-devel-bounces+charlie=sensoray.com@lists.freedesktop.org] <b>On Behalf Of </b>Keyul Panchal<br><b>Sent:</b> Monday, July 02, 2012 5:27 AM<br><b>To:</b> Discussion of the development of and with GStreamer<br><b>Subject:</b> Re: audioresample generate silence data to alsasink<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><p>Hi,<o:p></o:p></p><p> I am new to gstreamer <o:p></o:p></p><p> Testing is done on the target board <o:p></o:p></p><p> Req. Audio from alsasrc to be resampled and passed on to alsasink.<br> Audio source : mono<br> Input audio rate: 8KHz<br> Output audio rate: 44.1KHz<br> Observation : There is no audio heard in speakers<o:p></o:p></p><p> Pipeline used<br> 1. gst-launch-0.10 alsasrc device=hw:1,1,0 ! audioconvert ! audioresample ! audio/x-raw-int, rate=44100 ! alsasink device=hw:0,0,0<br> and <br> 2. gst-launch-0.10 alsasrc device=hw:1,1,0 ! audioconvert ! audio/x-raw-int, channels=1 ! audioresample ! audio/x-raw-int, rate=44100 ! alsasink device=hw:0,0,0<o:p></o:p></p><p> Test Performed<br> 1. Play test tone : Test tone is heard<br> gst-launch-0.10 audiotestsrc ! alsasink device=hw:0,0,0<o:p></o:p></p><p> 2. Record in a file and Play back :: Audio is getting recorded and audio heard when played back<br> a. Record audio <br> gst-launch-0.10 alsasrc device=hw:1,1,0 ! audioconvert ! audioresample ! audio/x-raw-int, rate=44100 ! wavenc ! filesink location="test.wav"<br> b. Playback audio <br> gst-launch-0.10 filesrc location="test.wav" ! audioconvert ! <strong><span style='color:red'>audio/x-raw-int, channels=1</span></strong> ! audioresample ! audio/x-raw-int, rate=44100 ! wavenc ! alsasink device=hw:0,0,0<br> <strong>Note! </strong>Playback audio is heard only when the No. of channels is set to 1<o:p></o:p></p><p><br> Let me know <br> 1. If some more inputs are required.<br> 2. How can i debug from here.<br> 3. Is there any role of sync, async or interleave?<br><br clear=all><br>-- <o:p></o:p></p><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><em><span style='font-size:13.5pt;font-family:"Comic Sans MS";color:#000099;background:white'>Regards,</span></em><o:p></o:p></p></div><div><p class=MsoNormal><em><span style='font-size:13.5pt;font-family:"Comic Sans MS";color:#000099;background:white'>Keyul A. Panchal</span></em><o:p></o:p></p></div><p class=MsoNormal><o:p> </o:p></p></div></body></html>