12-07-2010
Can't play sound files with aplay or cat to /dev/dsp
I am having problems using soundes. Until a few moments ago
the following commands produced errors and no sound:
cat /usr/share/apps/kolf/sounds/blackhole.wav/ > /dev/dsp yielded:
/dev/dsp: Invalid argument
cat /usr/share/apps/kolf/sounds/blackhole.wav > /dev/audio yelded:
/dev/audio: Invalid argument
aplay /usr/share/apps/kolf/sounds/blackhole.wav yielded:
main:590: audio open error: No such file or directory
and yet mplayer was happily playing audio with tv video. For that program the video is set up for drive 0 but for spurious reasons the program has to be fiddled to use drive 1. The camera, BT787, and VIA 8235 cards are 0, 1, 2 respectively. I don't know if this is related.
Now for no apparent reason it has started working. This is not a connection problem. It had been working until I installed Timidity++ which errors out also.
This is a 4 day headache so would make me happy if someone has a solution.
BTW I have seen suggestions to remove PCM add PCM, fiddle with XMMS and other supposed solutions. In scanning ALSAhowto I could find nothing that could link the responses I am getting. Thanks.
Last edited by slak0; 12-07-2010 at 05:29 AM..
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SPLAY(1) Applications/Sound SPLAY(1)
NAME
splay - MPEG-1,2 Audio layer 1,2,3 file player
SYNOPSIS
splay [-2VMfmrsv] [-k num] [-d dev] [-l list] [-t num] filenames...
DESCRIPTION
Splay is the sound file player such as MPEG-1,2 Audio files. And you can play these files using list file. With pthread, it can play
sound files smoother.
OPTIONS
Splay has several options.
-2 play MPEG-Audio files with half-frequency. If you use this option, you may play MPEG audio files with job which exhausts CPU very
much.
-f display info on played and remaining frames and time.
-m force to mono. Play with mono even if file is in stereo.
-r Repeat forever. If you -r with -s, list files are shuffled every time.
-s Shuffle play. If you give list file or a number of files, Splay will rearrange them randomly. And with -r every time the order of
files is changed.
-v[v[v]]
Verbose, Very verbose, Very very verbose.
-M Play MPEG file from standard input.
-V Show version number.
-t num
num of frames were saved during playing. When CPU is so busy and prevents splay from decoding, splay will play back using saved
frames. This feature lets you do other job freely while listening to MPEG music.
-k num
num of frames are skipped at the start of playing.
-d dev
Change device file. Default device file is /dev/dsp. If you can't use this device file or you can output raw type data to file, you
can use this option. If the first character of dev is / , dev would be considered as device file, If the first character of dev is
- , dev would be considered as standard output, otherwise dev would be considered as normal file.
-l list
Select list file. http:// can be used. (e.g. http://localhost/abc.m3u)
filenames
You can put several files, and use http:// If you use -l option, these will be ignored.
by Woo-jae Jung Aug 3 1997 SPLAY(1)