Meizirkki

# alsa_aplay --help          

Usage: aplay [OPTION]... [FILE]...

 

-h, --help              help

    --version           print current version

-l, --list-devices      list all soundcards and digital audio devices

-L, --list-pcms         list device names

-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

-M, --mmap              mmap stream

-N, --nonblock          nonblocking mode

-F, --period-time=#     distance between interrupts is # microseconds

-B, --buffer-time=#     buffer duration is # microseconds

    --period-size=#     distance between interrupts is # frames

    --buffer-size=#     buffer duration is # frames

-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)

-V, --vumeter=TYPE      enable VU meter (TYPE: mono or stereo)

-I, --separate-channels one file for each channel

    --disable-resample  disable automatic rate resample

    --disable-channels  disable automatic channel conversions

    --disable-format    disable automatic format conversions

    --disable-softvol   disable software volume control (softvol)

    --test-position     test ring buffer position

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)

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