alsacap - an ALSA device capability lister

deepsoul · 2013-04-05 15:00:16

alsacap serves to list the sampling rates, number of channels and sample formats supported by installed sound cards and their ALSA drivers. This helps to find out which parameters do not require resampling (something to be avoided) and to troubleshoot ALSA problems. ALSA parameters are not always independent: for example, the available sampling rates of a sound card may depend on the selected sample format. alsacap allows to find out about such restrictions by presetting some parameter values.

I wrote alsacap years ago. A recent e-mail from a user has reminded me that there is still no official tool with the same functionality. So I have written a manual page and put it in the AUR. Enjoy! If you want to learn more about ALSA parameters, devices and configuration, look at this page that I also wrote some years ago but which is still valid.

Last edited by deepsoul (2013-04-05 16:10:53)

Thorsten Reinbold · 2013-04-05 15:59:06

Please edit your link. It's not very nice forcing people to vote this way.

deepsoul · 2013-04-05 16:17:23

Thanks and shame on me! This was unintentional.

I had copied the URL from the browser after voting, and apparently voting is implemented as appending "/vote" to the AUR directory, without a redirect to the original URL. I had some trouble in the past with double posting as a result of reloading an AUR page but did not realise the scope of the problem.

ronalde · 2015-12-21 22:36:15

Created somewhat the same in bash (alsa-capabilities), which not only displays which digital audio formats and sample rates your alsa output interface supports, but also which process is locking it (if any).

To run the script, either download it first and than run it:

wget "https://lacocina.nl/alsa-capabilities" && bash alsa-capabilities

Or, run it directly from the web:

bash <(wget -q -O - "https://lacocina.nl/alsa-capabilities")
## or
bash <(curl -s "https://lacocina.nl/alsa-capabilities")

Regards,
Ronald

Last edited by ronalde (2016-12-22 08:58:47)

Jaimet · 2024-04-21 14:15:27

ronalde wrote:

Created somewhat the same in bash (alsa-capabilities), which not only displays which digital audio formats and sample rates your alsa output interface supports, but also which process is locking it (if any).

If anyone is looking for @ronalde's "alsa capabilities" script, it is (after several moves / relocations) currently situated here. HTH.

Arch Linux

#1 2013-04-05 15:00:16

alsacap - an ALSA device capability lister

#2 2013-04-05 15:59:06

Re: alsacap - an ALSA device capability lister

#3 2013-04-05 16:17:23

Re: alsacap - an ALSA device capability lister

#4 2015-12-21 22:36:15

Re: alsacap - an ALSA device capability lister

#5 2024-04-21 14:15:27

Re: alsacap - an ALSA device capability lister

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