audioplay(1) User Commands audioplay(1)NAMEaudioplay - play audio files
SYNOPSISaudioplay [-iV] [-v vol] [-b bal] [-p speaker | headphone | line]
[-d dev] [file...]
DESCRIPTION
The audioplay utility copies the named audio files (or the standard
input if no filenames are present) to the audio device. If no input
file is specified and standard input is a tty, the port, volume, and
balance settings specified on the command line will be applied and the
program will exit.
The input files must contain a valid audio file header. The encoding
information in this header is matched against the capabilities of the
audio device and, if the data formats are incompatible, an error mes‐
sage is printed and the file is skipped. Compressed ADPCM (G.721)
monaural audio data is automatically uncompressed before playing.
Minor deviations in sampling frequency (that is, less than 1%) are
ordinarily ignored. This allows, for instance, data sampled at 8012 Hz
to be played on an audio device that only supports 8000 Hz. If the -V
option is present, such deviations are flagged with warning messages.
OPTIONS
The following options are supported:
-i
Immediate: If the audio device is unavailable (that is, another
process currently has write access), audioplay ordinarily waits
until it can obtain access to the device. When the -i option is
present, audioplay prints an error message and exits immediately if
the device is busy.
-V
Verbose: Prints messages on the standard error when waiting for
access to the audio device or when sample rate deviations are
detected.
-v vol
Volume: The output volume is set to the specified value before
playing begins, and is reset to its previous level when audioplay
exits. The vol argument is an integer value between 0 and 100,
inclusive. If this argument is not specified, the output volume
remains at the level most recently set by any process.
-b bal
Balance: The output balance is set to the specified value before
playing begins, and is reset to its previous level when audioplay
exits. The bal argument is an integer value between -100 and 100,
inclusive. A value of -100 indicates left balance, 0 middle, and
100 right. If this argument is not specified, the output balance
remains at the level most recently set by any process.
-p speaker | headphone | line
Output Port: Selects the built-in speaker (the default), headphone
jack, or line out as the destination of the audio output signal. If
this argument is not specified, the output port will remain
unchanged. Please note: Not all audio adapters support all of the
output ports. If the named port does not exist, an appropriate sub‐
stitute will be used.
-d dev
Device: The dev argument specifies an alternate audio device to
which output should be directed. If the -d option is not specified,
the AUDIODEV environment variable is consulted (see below). Other‐
wise, /dev/audio is used as the default audio device.
−\?
Help: Prints a command line usage message.
OPERANDS
file File Specification: Audio files named on the command line are
played sequentially. If no filenames are present, the standard
input stream (if it is not a tty) is played (it, too, must
contain an audio file header). The special filename `−' may be
used to read the standard input stream instead of a file. If a
relative path name is supplied, the AUDIOPATH environment
variable is consulted (see below).
USAGE
See largefile(5) for the description of the behavior of audioplay when
encountering files greater than or equal to 2 Gbyte ( 2**31 bytes).
ENVIRONMENT VARIABLES
AUDIODEV The full path name of the audio device to write to, if
no -d argument is supplied. If the AUDIODEV variable is
not set, /dev/audio is used.
AUDIOPATH A colon-separated list of directories in which to
search for audio files whose names are given by rela‐
tive pathnames. The current directory (".") may be
specified explicitly in the search path. If the
AUDIOPATH variable is not set, only the current direc‐
tory will be searched.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Architecture │SPARC, x86 │
├─────────────────────────────┼─────────────────────────────┤
│Availability │SUNWauda │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Evolving │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOaudioconvert(1), audiorecord(1), mixerctl(1), attributes(5), large‐
file(5), usb_ac(7D), audio(7I), mixer(7I)BUGSaudioplay currently supports a limited set of audio format conversions.
If the audio file is not in a format supported by the audio device, it
must first be converted. For example, to convert to voice format on the
fly, use the command:
example% audioconvert -f voice myfile | audioplay
The format conversion will not always be able to keep up with the audio
output. If this is the case, you should convert to a temporary file
before playing the data.
SunOS 5.10 16 Feb 2001 audioplay(1)
