scosound(X1)
scosound --
graphical audio control utility
Synopsis
/usr/X/bin/scosound
[-option...]
[audio_file]
Description
scosound is an audio playback and record utility.
It can be used as an X-based graphical utility or
from the command line.
Entered without options or with only an audio file name,
scosound starts in graphical mode.
It provides a window consisting of the
following three areas:
- Menu bar
-
File and Options menus that give access to all
scosound features:
-
File selections allow you to open new or existing
sound files, copy sound files, and exit the application.
-
Options includes selections for Recording
Preferences.
- Recording preferences area
-
Displays the current set of recording preferences set under
the Options menu.
- Control buttons
-
Buttons that control playback and recording of audio files:
Stop, Pause, Play, Record.
NOTE:
A ``recording overrun'' can result if the sound source
generates data faster than the computer can process it.
This generally happens when the sample rate and/or sample size
are set too high.
If this happens, you might experience audio driver buffer
overflows and missing audio sections in the recorded file.
These error conditions are not usually detected by the audio
driver, although you might see console error messages.
Consult your sound card documentation for more information about
your hardware's limits.
Options
The following options are also available when starting
scosound from the command line:
- -audiodevice | -audio | -device device
-
audio device; for example, /dev/dsp0 or /dev/audio
- -fileformat | -file fileformat
-
file format; the default is wav.
Available values are:
-
Microsoft® WAVE format
-
Creative Labs® VOC sound format
-
Sun®/NeXT®
-law (mu-law) sound format
-
raw data
-
Macintosh® sound format
- -dataformat | -data dataformat
-
sample size and encoding method; the default is pcm8.
Available values are:
- pcm8
-
common unsigned 8-bit linear (Pulse Modulation Control)
- u8
-
unsigned 8-bit linear
- s8
-
signed 8-bit linear
- pcm16
-
common signed little endian 16-bit linear (Pulse Modulation Control)
- s16b
-
signed big endian 16-bit linear
- s16l
-
signed little endian 16-bit linear
- u16b
-
unsigned big endian 16-bit linear
- u16l
-
unsigned little endian 16-bit linear
- mulaw | ulaw
-
common
-law (mu-law) 8-bit logarithmic
- alaw
-
A-law 8-bit logarithmic
- ima_adpcm
-
IMA Adaptive Delta Pulse Control Modulation
- mpeg
-
MPEG (Motion Picture Experts Group) standard
- -comment string
-
comment; the default is "". This can be any string to be
embedded in the file's comment field,
if supported by the file format.
- -samplerate | -rate rate
-
frequency with which the input stream is sampled (in Hz); default is
22050. Available values are:
- 8000
-
a telephony standard often used with ulaw and
alaw encoding
- 11025
-
25% of the CD sampling rate or 50% of the Macintosh rate
- 16000
-
used by compression standards such as G.722
- 22050
-
the Macintosh sampling rate or 50% of the CD rate
- 32000
-
used in several digital broadcast standards
- 44100
-
the CD sampling rate
- 48000
-
the DAT (Digital Audio Tape) sampling rate
au file formats usually take sample rates of 8000Hz;
wav file formats usually take 11025, 22050, or
44100Hz.
- -gain percent
-
input gain in percent (an integer value from 0 to 100);
the default is 75
- -volume percent
-
output volume in percent (an integer value from 0 to 100);
the default is 75
- -channels channels
-
number of channels, where 1 is mono and 2 is stereo; the default is 1
- -mono
-
same as -channels 2
- -stereo
-
same as -channels 1
- -autoplay
-
automatically initiate playing the file
Files
/usr/X/lib/X11/app-defaults/ScoSound
References
mixer(1),
vplay(1),
vrec(1)
``Configuring audio adapters''
30 January 1998
© 1998 The Santa Cruz Operation, Inc. All rights reserved.