![]() ![]() The file after mon-99.wav is mon-100.wav.Īrecord -f cd -t wav -max-file-time 3600 -use-strftime %Y/%m/%d/listen-%H-%M-%v.wav Record in stereo from the default audio source. asoundrc file as: pcm.copy arecord -t wav -max-file-time 30 mon.wav Record from the default audio source in monaural, 8,000 samples per second, 8 bits per sample. au file.Īrecord -d 10 -f cd -t wav -D copy foobar.wav will record foobar.wav as a 10-second, CD-quality wave file, using the PCM "copy" (which might be defined in the user's. However, SIGUSR1 does not work with -separate-channels.Įxamples aplay -c 1 -t raw -r 22050 -f mu_law foobar will play the raw file "foobar" as a 22050-Hz, mono, 8-bit, Mu-Law. The output file, open a new one, and continue recording. When recording, SIGINT, SIGTERM and SIGABRT will close the output file and exit. xrun) are encountered the aplay process instead aborts immediately. fatal-errors Disables recovery attempts when errors (e.g. For raw device hw:X this option basically lists hardware capabilities of the soundcard. Numbers of channels, period and buffer bytes/sizes/times. The dump lists capabilities of the selected device such as supported formats, sampling rates, dump-hw-params Dump hw_params of the device preconfigured status to stderr. This option has no effect if -separate-channels is specified. Specified, intermediate directories for the output file are created automatically. In addition, %v is the file number, starting at 1. The important strftime codesĪre: %Y is the year, %m month, %d day of the month, %H hour, %M minute and %S second. ![]() use-strftime When recording, interpret %-codes in the file name parameter using the strftime facility whenever the output file is opened. process-id-file aplay writes its process ID here, so other programs can send signals to it. Default is the maximum size supportedīy the file format: 2 GiB for WAV files. max-file-time While recording, when the output file has been accumulating sound for this long, close it and open a new output file. ![]() test-nowait Do not wait for the ring buffer-eats the whole CPU. Expression for validation is: coef * (buffer_size / 2). R, -start-delay=# Delay for automatic PCM start is # microseconds (relative to buffer size if Test coefficient for ring buffer position default is 8. A, -avail-min=# Min available space for wakeup is # microseconds buffer-size=# Buffer duration is # frames If no buffer time and no buffer size is given then the maximal allowed buffer time but not more than 500ms is set. period-size=# Distance between interrupts is # frames If no period size and no period time is given then a quarter of the buffer size is set. B, -buffer-time=# Buffer duration is # microseconds If no buffer time and no buffer size is given then the maximal allowed buffer time but not more than 500ms is set. If no period time and no period size is given then a quarter of the buffer time is set. F, -period-time=# Distance between interrupts is # microseconds. If this option is not set the program will block until If the device is busy the program will exit immediately. N, -nonblock Open the audio device in non-blocking mode. If this option is not set, the read/write I/O mode will be used. M, -mmap Use memory-mapped (mmap) I/O mode for the audio stream. The default is zero, so if this option is omitted then the arecord process will run until it is d, -duration=# Interrupt after # seconds. If the value specified is less than 300, it is taken as the rate in kilohertz. f dat (16 bit little endian, 48000, stereo) f cdr (16 bit big endian, 44100, stereo) The available format shortcuts are: -f cd (16 bit little endian, 44100, stereo) Some of these may not be available on selected hardware If this parameter is omitted the WAVE format is used. t, -file-type TYPE File type (voc, wav, raw or au). l, -list-devices List all soundcards and digital audio devices The aplay utility accepts multiple filenames. If filename is not specified, the standard output or input is used. For supported soundfile formats, the sampling rate, bit depth, and so forth can beĪutomatically determined from the soundfile header. If recording with interleaved mode samples the file is automatically split before the 2GBĪplay is much the same, only it plays instead of recording. Several file formats and multiple soundcards with multiple devices. Arecord is a command-line soundfile recorder for the ALSA soundcard driver. ![]()
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