ALSA toos-aplay的使用

使用alsa的工具aplay錄音

./arecord -f S16_LE -c 2 -r 8000 -d 20 8k.wav #錄音:16bit 小端，立體聲，採樣率8K，時間20s

註：將aplay命名為arecord，或者使用aplay -C

{"help", 0, 0, 'h'},{"version", 0, 0, OPT_VERSION},{"list-devices", 0, 0, 'l'},{"list-pcms", 0, 0, 'L'},{"device", 1, 0, 'D'},{"quiet", 0, 0, 'q'},{"file-type", 1, 0, 't'},{"channels", 1, 0, 'c'},{"format", 1, 0, 'f'},{"rate", 1, 0, 'r'},{"duration", 1, 0 ,'d'},{"sleep-min", 1, 0, 's'},{"mmap", 0, 0, 'M'},{"nonblock", 0, 0, 'N'},{"period-time", 1, 0, 'F'},{"period-size", 1, 0, OPT_PERIOD_SIZE},{"avail-min", 1, 0, 'A'},{"start-delay", 1, 0, 'R'},{"stop-delay", 1, 0, 'T'},{"buffer-time", 1, 0, 'B'},{"buffer-size", 1, 0, OPT_BUFFER_SIZE},{"verbose", 0, 0, 'v'},{"separate-channels", 0, 0, 'I'},{"playback", 0, 0, 'P'},{"capture", 0, 0, 'C'},