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The Advanced Linux Sound Architecture (ALSA) - utilities
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Audio latency is the time delay as an audio signal passes through a system. There are many kinds of audio latency metrics. One useful metric is the round trip latency, which is the sum of output latency and input latency. The measurement step works like below: 1. Listen and measure the average loudness of the environment for one second; 2. Create a threshold value 16 decibels higher than the average loudness; 3. Begin playing a ~1000 Hz sine wave and start counting the samples elapsed; 4. Stop counting and playing if the input's loudness is higher than the threshold, as the output wave is probably coming back; 5. Calculate the audio latency value in milliseconds. Signed-off-by: Zhang Vivian <vivian.zhang@intel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de> |
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| alsa-info | ||
| alsaconf | ||
| alsactl | ||
| alsaloop | ||
| alsamixer | ||
| alsaucm | ||
| amidi | ||
| amixer | ||
| aplay | ||
| bat | ||
| iecset | ||
| include | ||
| m4 | ||
| po | ||
| seq | ||
| speaker-test | ||
| topology | ||
| utils | ||
| .gitignore | ||
| acinclude.m4 | ||
| ChangeLog | ||
| configure.ac | ||
| COPYING | ||
| gitcompile | ||
| INSTALL | ||
| Makefile.am | ||
| README | ||
| TODO | ||
Advanced Linux Sound Architecture - Utilities ============================================= This package contains the command line utilities for the ALSA project. The package can be compiled only with the installed ALSA driver and the ALSA C library. alsaconf - the ALSA driver configurator script alsactl - an utility for soundcard settings management aplay/arecord - an utility for the playback / capture of .wav,.voc,.au files amixer - a command line mixer alsamixer - a ncurses mixer amidi - a utility to send/receive sysex dumps or other MIDI data iecset - a utility to show/set the IEC958 status bits You may give a look for more information about the ALSA project to URL http://www.alsa-project.org. Jaroslav Kysela <perex@perex.cz>