#Gxp2170 audio loopback driver
#Gxp2170 audio loopback free

It happens more often using a less powered laptop (core i5) than on my desktop (core i7), but even on the desktop sometimes I get the artifacts. It works fine, but sometimes I get artifacts in the sound.

#Gxp2170 audio loopback driver

I'm trying the NAudio library, and I made a simple code to get the audio captured from the ASIO driver and copy it to the output buffers. I tried with aplay -D hw:2,0,x myaudio.I'm starting a project where I need to capture audio with the lowest possible latency, and it looks like ASIO is the best choice for it. Unfortunately I canвЂ™t manage it.Д¬ard 0: Headphones, device 0: bcm2835 Headphones Д¬ard 1: Loopback, device 0: Loopback PCM Д¬ard 1: Loopback, device 1: Loopback PCM It works with a physical soundcard and a loopback cable, but IвЂ™d like to set up without physical soundcard. Now I have to loop the output to the вЂњmicrophoneвЂќ input, because this is what pjsua sendвЂ™s via SIP. Therfore I wrote a script which use aplay for producing the anncoument. I tried to make an automataic phone answering with pjsua. I am thinking of creating loopback device then forward or clone hdmi sound to this loopback device and capture from counter part of loopback device. **** List of PLAYBACK Hardware Devices ****Д¬ard 0: ALSA, device 0: bcm2835 ALSA Д¬ard 0: ALSA, device 1: bcm2835 IEC958/HDMI Д¬ard 0: ALSA, device 2: bcm2835 IEC958/HDMI1 **** List of CAPTURE Hardware Devices $ aplay -l Here is my situation in raspberry $ arecord -l This time you should be able to hear the audio.wav directly through systemвЂ™s default speaker вЂ“ again a loopback in action вЂ“ rather two loopbacks in action: audio.wav -> hw:2,0,4 -> (loopback through snd-aloop driver) -> hw:2,1,4 -> (loopback through alsaloop app) -> hw:1,0 -> heard on speaker.ДЎ2 thoughts on вЂњ Playing with ALSA loopback devicesвЂќ On another shell, do the earlier playing: $ aplay -D hw:2,0,4 audio.wav 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.

#Gxp2170 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.