VIA HD AUDIO LOOPBACK FREE

And, now letвЂ™s loopback the virtual audio capture device hw:2,1,4 to this: alsaloop -C hw:2,1,4 -P hw:1,0 From the output of aplay -l, hw:1,0 is the analog out (speaker). Interestingly, audio loopback could also be achieved in user space using alsaloop from alsa-utils package. This would record from your systemвЂ™s default mic. For that, just record a new wave file with your speech using the following command: $ arecord -f S16_LE -c 2 -r 48000 audio.wav This would play on your systemвЂ™s default speaker.ДЄlso, note that there may be problem in just playing any audio.wav file because of the mismatched audio format etc support. You may play the recorded audio as follows: $ aplay recorded.wav Note that providing the sample format, channel count, frame rate in recording ensures that playback picks up the same settings вЂ“ this is because there is no real hardware underneath it is just a virtual loopback connection.ДЄnd in parallel (from another shell) play an audio from audio.wav into hw:2,0,4: $ aplay -D hw:2,0,4 audio.wavДЄnd youвЂ™d find that recorded audio contains the played one вЂ“ a loopback in action. Start recording audio from hw:2,1,4: $ arecord -D hw:2,1,4 -f S16_LE -c 2 -r 48000 recorded.wav A simple experiment could demonstrate the same. For example, audio played back into hw:2,0,4 could be captured from hw:2,1,4 audio played back into hw:2,1,7 could be captured from hw:2,0,7 вЂ“ these are what are the loopbacks. Now in this, whatever audio is played back into hw:2,0,s could be captured from hw:2,1,s and viceversa, s ranging from 0 to 7. 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.

VIA HD AUDIO LOOPBACK FREE

It may vary depending on which is the next free available card number. In the above images, the card 2 is the loopback card.

Via hd audio loopback