Sergei, Bill, Thankyou for your response to my query. After I sent this email I tried the same thing with Logitech V10 USB speakers rather than the C-Media USB headphones. The same wav file gets played successfully (same machine, same kernel) doing cat sound.wav > /dev/dsp. Your second point though about number of bits/endianess etc could be an issue. The sound I am hearing could be white noise but its not continuous and it sounds like a brief clicking noise. Will try and change the number of bits, endianess etc to see if I can get some better results. Any further comments would be most welcome. Cheers, Geoff Crowther -----Original Message----- From: Sergei Steshenko [mailto:steshenko_sergei@xxxxxxx] Sent: Tuesday, 22 December 2009 6:28 AM To: Geoffrey Crowther Cc: alsa-user@xxxxxxxxxxxxxxxxxxxxx Subject: Re: cat sound.wav > /dev/dsp Not Working On Sun, 20 Dec 2009 20:50:28 -0800 Geoffrey Crowther <gcrowther@xxxxxxxxxx> wrote: > Hello, > > Want to use OSS emulation through /dev/dsp for playing wav files. As a simple test to start with I attempt the following:- > > cat sound.wav > /dev/dsp > [snip] WAV file is not a PCM stream, so even after you're done fixing AOSS problems this won't work as expected. Use 'sox' or 'ecasound' to convert your WAV file to proper (number of bits, endianness, etc.) PCM stream which is written to stdout and pipe it into /dev/dsp. Regards, Sergei. ------------------------------------------------------------------------------ This SF.Net email is sponsored by the Verizon Developer Community Take advantage of Verizon's best-in-class app development support A streamlined, 14 day to market process makes app distribution fast and easy Join now and get one step closer to millions of Verizon customers http://p.sf.net/sfu/verizon-dev2dev _______________________________________________ Alsa-user mailing list Alsa-user@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/alsa-user
