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Digitized Audio Utility for Linux ver. 0.3
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============================================
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This directory contains vplay.c, a modified version of recplay.c.
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These programs can be used for recording and playing:
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CREATIVE LABS VOICE files
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MICROSOFT WAVE file (old format only (new format is handled as raw data))
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NeXT sound files (similar to Sun's .au format)
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Both programs accept the same options:
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vrec [-qvwrS] [-s speed] [-t seconds] -b bits [filename1 ...]
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vplay [-qvwrS] [-s speed] [-t seconds] -b bits [filename1 ...]
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-S Stereo (default is mono).
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-s speed Sets the speed (default is 8 kHz). If the speed is
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less than 300, it will be multiplied by 1000.
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-t seconds Sets the recording (or playback) time in seconds.
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(Default is no time limit).
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-t bits Sets sample size (bits/sample). Possible values are
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-v record a CREATIVE LABS VOICE file (default)
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-w record a MICROSOFT WAVE file
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-r record raw data without header
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-a record a NeXT sound file
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The options for speed, time etc. take only effect if you playing
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raw data files (or recording). VOC and WAVE-files include this
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information in their headers/internal structure.
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If no filenames are given, stdout (vrec) or stdin (vplay) is used.
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The -t parameter applies to each files. For example
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records one second of audio data to each of the files a, b, and c and
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plays the first second of each of the files a, b and c (if its
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Don't use higher recording speeds than your card supports. This error is not
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always detected by the driver.
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- the full CREATIVE LABS VOICE structure:
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Silence, Repeat loops (on seekable input), Stereo, ASCII blocks,
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blocks with different sampling rate
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- on non-stereo cards (SB 1.0 - 2.0) 8 bit stereo files will be
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played as mono (the first channel is used)
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- on non-16-bit cards, 16 bit WAVE files will be played as 8 bit
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(you can really play on a SB 1.0 a 16 bit stereo WAVE file, or
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- packed VOC files (because /dev/dsp can't it (yet ?))
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- multi block WAVE files (if there exists like VOC files, my specs
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says no but RIFF definition yes ???)
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- not PCM coded WAVE files (because I don't know other methods)
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- more channel WAVE files (somebody has a quadrophonic sample?)
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- alaw- or mulaw-encoded NeXt sound files
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Michael Beck beck@informatik.hu-berlin.de