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Alsa Opensrc Org - Independent ALSA and linux audio ...
https://alsa.opensrc.org/Device
An ALSA device is more specifically a physical or virtual object for which ALSA provides device drivers to access and control its functionality. With ALSA providing the interface to the sound hardware, it is no longer necessary for users (and application programmers) to worry about the kernel devices as presented in the '/dev/' filesystem; ALSA presents the user with its own set of …
no audio recorded from alsa loopback device - Stack …
https://stackoverflow.com/questions/66226759/no-audio-recorded-from-alsa-loopback-device
The loopback device actually creates pairs of devices. One device is the read end and a separate device is the write end. What you actually need is: aplay -D hw:1,0 foo.wav. &. arecord -D hw:1,1 bar.wav. or using sox: AUDIODEV=hw:1,0 play -V foo.wav AUDIODEV=hw:1,1 rec -V -c 1 -r 8000 bar.wav.
Unknown PCM alsa_audio_device when hit play · Issue …
https://github.com/Spotifyd/spotifyd/issues/639
Both # can't be used simultaneously. use_keyring = true # The audio backend used to play the your music. To get # a list of possible backends, run `spotifyd --help`. backend = alsa # The alsa audio device to stream audio to. To get a # list of valid devices, run `aplay -L`, device = hw:3,0 # omit for macOS # The alsa control device.
Playing with ALSA loopback devices | Playing with Systems
https://sysplay.in/blog/linux/2019/06/playing-with-alsa-loopback-devices/
In the above images, the card 2 is the loopback card. It may vary depending on which is the next free available card number. Moreover, each of the two devices under it, has 8 subdevices, which would be accessed using the format hw:c,d,s, where c stands for card number, d for device number, and s for subdevice number, e.g. hw:2,0,0
Matrix:Module-usb-audio - AlsaProject
https://www.alsa-project.org/wiki/Matrix:Module-usb-audio
vid:Vendor ID for the USB audio device. (array of int) ... At this point we are finished with the configuration for ALSA native devices, but you may also need autoloading for the OSS/Free emulation modules, an ALSA add-on. At this …
pulseaudio - How to route pulse audio device into alsa ...
https://askubuntu.com/questions/895216/how-to-route-pulse-audio-device-into-alsa-loopback-virtual-microphone
So this means the capturing of this audio stream has to be done via /dev/snd/pcmC2D1c; if you select loopback as the input device for flash, it will use /dev/snd/pcmC2D0c instead ( plugin-co means the plugin container flash is running in): user@desk:~$ lsof | grep /dev/snd/pcmC2 pulseaudi 3314 user mem CHR 116,13 556 /dev/snd/pcmC2D0p pulseaudi ...
ALSA: cannot open audio device · GitHub
https://gist.github.com/anteaya/60125
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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 …
How to configure alsa devices for USB Audio interface ...
https://www.linux.org/threads/how-to-configure-alsa-devices-for-usb-audio-interface.17908/
I have an ESI NeOn Audio/Midi interface with 4 input and 2 output channels. The device is old but audio out and midi seems to work with alsa/jack. However subdevices are not recognized and so I cannot use eg. Mic in to capture audio. Is there a way to manually configure alsa to see the card's...
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