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Finding all the devices I can use to play PCM with ALSA
https://stackoverflow.com/questions/6866103/finding-all-the-devices-i-can-use-to-play-pcm-with-alsa
Then I need to use these devices to capture and plaback the audio. What I have done is pretty simple. There is a linux/unix command which is used to find the devices through alsa utility in linux. It is: aplay -l. Now what I did is just …
enumerate ALSA devices · Issue #5611 · clementine …
https://github.com/clementine-player/Clementine/issues/5611
As discussed in #5344, the ability to specify an ALSA output device (such as "hw=2,0") has been removed, as confusing to users. Unfortunately, this breaks Clementine for people with non-trivial audio setups who can't use PulseAudio because of bugs in the latter. So, let's make ALSA as user-friendly as PulseAudio.
List available ALSA audio devices - MATLAB ...
https://uk.mathworks.com/help/supportpkg/raspberrypi/ref/listaudiodevices.html
The function returns a structured array with field names that correspond to the properties of ALSA audio output devices connected to raspPiObj. devices = listAudioDevices (raspPiObj, 'playback') devices = 1×3 struct array with fields: Name Device Channels BitDepth SamplingRate.
arecord: Linux Command to List all Soundcards and …
https://www.cyberciti.biz/tips/howto-display-soundcards-digital-audio-devices.html
You need to use card number and device number while playing various media. For example, to play a radiostation (FM freq # 98.3) from card #1 and device 0 (hw=.), enter: $ mplayer radio://98.3 -radio driver=v4l2:device=/dev/radio0:adevice=hw=1.0. Display all PCMs defined. Type the following command: $ record -L Outputs:
sound - How to list/access all the available audio input ...
https://askubuntu.com/questions/891623/how-to-list-access-all-the-available-audio-input-and-output-ports-channels-of-a
So, I used ALSA commands to see the available audio interfaces. The following is the output of the same: skrowten_hermit@PC-760:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: AD1984A Analog [AD1984A Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 2: AD1984A Alt Analog [AD1984A Alt Analog] …
linux - What do ALSA devices like "hw:0,0" mean? How do I ...
https://superuser.com/questions/53957/what-do-alsa-devices-like-hw0-0-mean-how-do-i-figure-out-which-to-use
JohnT's answer gives a good basic. I'll follow it up with how to find the devices on your system. Use aplay -l to get a list of the devices on your system. The hw:X,Y comes from this mapping of your hardware -- in this case, X is the card number, while Y is the device number. $ aplay -l # note lower-case "L" option **** List of PLAYBACK Hardware Devices **** card 0: T71Space [Terratec …
sound - ALSA unable to list playback devices and issues ...
https://askubuntu.com/questions/955228/alsa-unable-to-list-playback-devices-and-issues-with-pulseaudio-default-output
Firstly, I get the sense that something's wrong with the configuration of ALSA on my system, as I'm currently unable to list any playback devices using: aplay -l. This is the output I get: **** List of PLAYBACK Hardware Devices **** ALSA lib conf.c:3357: (snd_config_hooks_call) Cannot open shared library libasound_module_conf_pulse.so ALSA lib ...
DeviceNames - AlsaProject
https://www.alsa-project.org/main/index.php/DeviceNames
Playback device names default. This is the recommended device name for most applications. The default device will usually use Pulseaudio or dmix, i.e. software mixing, which ensures that your application won't prevent other audio applications from working at the same time, in case the hardware doesn't provide mixing support itself.
Alsa Opensrc Org - Independent ALSA and linux audio ...
https://alsa.opensrc.org/Device
There are three main types of ALSA devices: digital audio devices (such as PCM capture and playback devices), control devices (such as mixers or equalizers), MIDI devices (such as sequencers or sound generators). The device numbers as presented in the specification string ("interface:card,device") are not unique, device #0 might be a control device, an audio device, or …
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