Arecord

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arecord is a simple native ALSA command line wav recorder.

Usage

   Usage: arecord [OPTION]... [FILE]...

   --help                  help
   --version               print current version
   -l, --list-devices      list all soundcards and digital audio devices
   -L, --list-pcms         list all PCMs defined
   -D, --device=NAME       select PCM by name
   -q, --quiet             quiet mode
   -t, --file-type TYPE    file type (voc, wav, raw or au)
   -c, --channels=#        channels
   -f, --format=FORMAT     sample format (case insensitive)
   -r, --rate=#            sample rate
   -d, --duration=#        interrupt after # seconds
   -s, --sleep-min=#       min ticks to sleep
   -M, --mmap              mmap stream
   -N, --nonblock          nonblocking mode
   -F, --period-time=#     distance between interrupts is # microseconds
   -B, --buffer-time=#     buffer duration is # microseconds
   -A, --avail-min=#       min available space for wakeup is # microseconds
   -R, --start-delay=#     delay for automatic PCM start is # microseconds
                           (relative to buffer size if <= 0)
   -T, --stop-delay=#      delay for automatic PCM stop is # microseconds from xrun
   -v, --verbose           show PCM structure and setup (accumulative)
   -I, --separate-channels one file for each channel
   Recognized sample formats are: S8 U8 S16_LE S16_BE U16_LE U16_BE S24_LE S24_BE U24_LE U24_BE S32_LE S32_BE U32_LE U32_BE FLOAT_LE FLOAT_BE FLOAT64_LE FLOAT64_BE IEC958_SUBFRAME_LE IEC958_SUBFRAME_BE MU_LAW A_LAW IMA_ADPCM MPEG GSM SPECIAL S24_3LE S24_3BE U24_3LE U24_3BE S20_3LE S20_3BE U20_3LE U20_3BE S18_3LE S18_3BE U18_3LE
   Some of these may not be available on selected hardware
   The availabled format shortcuts are:
   -f cd (16 bit little endian, 44100, stereo)
   -f cdr (16 bit big endian, 44100, stereo)
   -f dat (16 bit little endian, 48000, stereo)

SBliveCapture is an example of using arecord in a shell script.

Retrieved from "http://alsa.opensrc.org/Arecord"

Category: Alsa-utils

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