Manual page for SNDRECORD(1)
sndrecord - record a soundfile from sound-in or the DSP
SYNOPSIS
sndrecord [ options ] file
DESCRIPTION
Sndrecord
records sound from either sound-in hardware
or from the DSP (if available).
By default, data is taken from sound-in
and placed in the named file. Alternatively, the data may be taken
from a program running on the DSP. The default DSP program reads 16-bit-wide
data in from the DSP serial input. The resulting file may be played
back using
sndplay.1
OPTIONS
- -F format-code
-
Record samples in the specified format. Format codes are defined in
<sound/soundstruct.h>. Some examples are 1 (MULAW_8), 2 (LINEAR_8),
and 3 (LINEAR_16). The default is 1 (MULAW_8). The formats supported
depend on the available sound-in hardware. This option may not be used
with -d, -e, -m, or -f.
- -S sampling-rate
-
Record samples at the specified rate, which may be specified
in floating point. The default is 8012 (SND_RATE_CODEC).
The rates supported
depend on the available sound-in hardware. This option may not be used
with -d, -e, -m, or -f.
- -n channel-count
-
Record the specified number of channels. Typically 1 (mono)
or 2 (stereo). The default is 1 (mono).
The channel counts supported
depend on the available sound-in hardware. This option may not be used
with -d, -e, -m, or -f.
- -d
-
Record 16 bit data from the DSP serial input.
The format of the data saved is 16 bit linear stereo.
This option may not be used with -F, -S, or -n.
- -e
-
Record 24 bit data from the DSP serial input.
The format of the data saved is 16 bit linear stereo.
This option may not be used with -F, -S, or -n.
- -m
-
Specify that the data recorded from the DSP is emphasized.
This option may not be used with -F, -S, or -n.
- -f dsp-program
-
Run the specified program on the DSP recording its output into the specified sound file.
This option may not be used with -F, -S, or -n.
- -w
-
Print warning messages if an output overflow is detected.
- -s size
-
Record at most size bytes into the output file.
- -c comment
-
Place
comment
into the comment field of the output file.
- -C comment-file
-
Place the contents of
comment-file
into the output file.
- -h high-water-mark
-
Set the high water mark used by the the operating system in wiring down
memory to record into. The operating system will try to wire down enough
physical pages to reach the high water mark.
- -l low-water-mark
-
Set the low water mark used by the operating system. The operating system
ensures that at least this many bytes are wired down to record into.
- -D dma-size
-
Set the size of the buffers used by the operating system for a unit of
recording. This size must be a power of two less than or equal to the
physical page size of the machine.
- -v
-
Print out state useful for determining the internal behavior of
sndrecord.
Of marginal use.
FILES
The <sound/soundstruct.h> file contains the data format codes defined by the
system.
SEE ALSO
sndplay(1), sndconvert(1), sndinfo(1), sndcompress(1)
BUGS
The format, sampling rate, and channel count option names do
not match their
sndconvert
counterparts.
Created by unroff & hp-tools.
© somebody (See intro for details). All Rights Reserved.
Last modified 11/5/97
