Record/ process and playback application sound using sounddevice or pyaudio
I am working on a project where I'd like to capture internal playback (sound output by any application), record/ process it, and play it back to the speakers. I'd imagine that the ideal way to do this is to route the output audio to a virtual input device (microphone), so that it's visible from sounddevice or pyaudio (which I would like to use to process and output the audio). I have looked at several posts using a mixture of jack, pulse audio, alsa loopback module, etc to be able to achieve this (such as this one and this one), but I am unable to see the virtual microphone listed from pyaudio or sounddevice and am unable to record from it. Would anyone be able to help me through this last step? I am using Ubuntu 16.04.
Edit: Here are some further details --
Following the instructions in here, I have loaded the alsa snd_loop module and can see the cards by doing:
arecord -l
However, editing the /etc/pulse/default.pa file to include load-module module-alsa-sink device=hw:2,1 (my loopback card is #2) produces the following in pavucontrol:
pavucontrol output devices
pavucontrol input devices
showing, on the input side, that only the loopback monitor is actively capturing the sound. Looking at the device listing from sounddevice, for example, I see
python2 -m sounddevice
0 HDA Intel PCH: ALC3234 Alt Analog (hw:0,2), ALSA (2 in, 0 out)
1 HDA Intel PCH: HDMI 0 (hw:0,3), ALSA (0 in, 8 out)
2 HDA Intel PCH: HDMI 1 (hw:0,7), ALSA (0 in, 8 out)
3 HDA Intel PCH: HDMI 2 (hw:0,8), ALSA (0 in, 8 out)
4 Loopback: PCM (hw:2,0), ALSA (2 in, 32 out)
5 Loopback: PCM (hw:2,1), ALSA (32 in, 32 out)
6 hdmi, ALSA (0 in, 8 out)
7 pulse, ALSA (32 in, 32 out)
* 8 default, ALSA (32 in, 32 out)
Where the loopback devices do not allow me to record from them as an input. How do I get this to appear as an input microphone?
python audio alsa pyaudio python-sounddevice
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
add a comment |
I am working on a project where I'd like to capture internal playback (sound output by any application), record/ process it, and play it back to the speakers. I'd imagine that the ideal way to do this is to route the output audio to a virtual input device (microphone), so that it's visible from sounddevice or pyaudio (which I would like to use to process and output the audio). I have looked at several posts using a mixture of jack, pulse audio, alsa loopback module, etc to be able to achieve this (such as this one and this one), but I am unable to see the virtual microphone listed from pyaudio or sounddevice and am unable to record from it. Would anyone be able to help me through this last step? I am using Ubuntu 16.04.
Edit: Here are some further details --
Following the instructions in here, I have loaded the alsa snd_loop module and can see the cards by doing:
arecord -l
However, editing the /etc/pulse/default.pa file to include load-module module-alsa-sink device=hw:2,1 (my loopback card is #2) produces the following in pavucontrol:
pavucontrol output devices
pavucontrol input devices
showing, on the input side, that only the loopback monitor is actively capturing the sound. Looking at the device listing from sounddevice, for example, I see
python2 -m sounddevice
0 HDA Intel PCH: ALC3234 Alt Analog (hw:0,2), ALSA (2 in, 0 out)
1 HDA Intel PCH: HDMI 0 (hw:0,3), ALSA (0 in, 8 out)
2 HDA Intel PCH: HDMI 1 (hw:0,7), ALSA (0 in, 8 out)
3 HDA Intel PCH: HDMI 2 (hw:0,8), ALSA (0 in, 8 out)
4 Loopback: PCM (hw:2,0), ALSA (2 in, 32 out)
5 Loopback: PCM (hw:2,1), ALSA (32 in, 32 out)
6 hdmi, ALSA (0 in, 8 out)
7 pulse, ALSA (32 in, 32 out)
* 8 default, ALSA (32 in, 32 out)
Where the loopback devices do not allow me to record from them as an input. How do I get this to appear as an input microphone?
python audio alsa pyaudio python-sounddevice
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
It looks like you want us to write some code for you. While many users are willing to produce code for a coder in distress, they usually only help when the poster has already tried to solve the problem on their own. A good way to demonstrate this effort is to include the code you've written so far, example input (if there is any), the expected output, and the output you actually get (console output, tracebacks, etc.). The more detail you provide, the more answers you are likely to receive. Check the FAQ and How to Ask.
– roeen30
Nov 17 '18 at 21:13
add a comment |
I am working on a project where I'd like to capture internal playback (sound output by any application), record/ process it, and play it back to the speakers. I'd imagine that the ideal way to do this is to route the output audio to a virtual input device (microphone), so that it's visible from sounddevice or pyaudio (which I would like to use to process and output the audio). I have looked at several posts using a mixture of jack, pulse audio, alsa loopback module, etc to be able to achieve this (such as this one and this one), but I am unable to see the virtual microphone listed from pyaudio or sounddevice and am unable to record from it. Would anyone be able to help me through this last step? I am using Ubuntu 16.04.
Edit: Here are some further details --
Following the instructions in here, I have loaded the alsa snd_loop module and can see the cards by doing:
arecord -l
However, editing the /etc/pulse/default.pa file to include load-module module-alsa-sink device=hw:2,1 (my loopback card is #2) produces the following in pavucontrol:
pavucontrol output devices
pavucontrol input devices
showing, on the input side, that only the loopback monitor is actively capturing the sound. Looking at the device listing from sounddevice, for example, I see
python2 -m sounddevice
0 HDA Intel PCH: ALC3234 Alt Analog (hw:0,2), ALSA (2 in, 0 out)
1 HDA Intel PCH: HDMI 0 (hw:0,3), ALSA (0 in, 8 out)
2 HDA Intel PCH: HDMI 1 (hw:0,7), ALSA (0 in, 8 out)
3 HDA Intel PCH: HDMI 2 (hw:0,8), ALSA (0 in, 8 out)
4 Loopback: PCM (hw:2,0), ALSA (2 in, 32 out)
5 Loopback: PCM (hw:2,1), ALSA (32 in, 32 out)
6 hdmi, ALSA (0 in, 8 out)
7 pulse, ALSA (32 in, 32 out)
* 8 default, ALSA (32 in, 32 out)
Where the loopback devices do not allow me to record from them as an input. How do I get this to appear as an input microphone?
python audio alsa pyaudio python-sounddevice
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
I am working on a project where I'd like to capture internal playback (sound output by any application), record/ process it, and play it back to the speakers. I'd imagine that the ideal way to do this is to route the output audio to a virtual input device (microphone), so that it's visible from sounddevice or pyaudio (which I would like to use to process and output the audio). I have looked at several posts using a mixture of jack, pulse audio, alsa loopback module, etc to be able to achieve this (such as this one and this one), but I am unable to see the virtual microphone listed from pyaudio or sounddevice and am unable to record from it. Would anyone be able to help me through this last step? I am using Ubuntu 16.04.
Edit: Here are some further details --
Following the instructions in here, I have loaded the alsa snd_loop module and can see the cards by doing:
arecord -l
However, editing the /etc/pulse/default.pa file to include load-module module-alsa-sink device=hw:2,1 (my loopback card is #2) produces the following in pavucontrol:
pavucontrol output devices
pavucontrol input devices
showing, on the input side, that only the loopback monitor is actively capturing the sound. Looking at the device listing from sounddevice, for example, I see
python2 -m sounddevice
0 HDA Intel PCH: ALC3234 Alt Analog (hw:0,2), ALSA (2 in, 0 out)
1 HDA Intel PCH: HDMI 0 (hw:0,3), ALSA (0 in, 8 out)
2 HDA Intel PCH: HDMI 1 (hw:0,7), ALSA (0 in, 8 out)
3 HDA Intel PCH: HDMI 2 (hw:0,8), ALSA (0 in, 8 out)
4 Loopback: PCM (hw:2,0), ALSA (2 in, 32 out)
5 Loopback: PCM (hw:2,1), ALSA (32 in, 32 out)
6 hdmi, ALSA (0 in, 8 out)
7 pulse, ALSA (32 in, 32 out)
* 8 default, ALSA (32 in, 32 out)
Where the loopback devices do not allow me to record from them as an input. How do I get this to appear as an input microphone?
python audio alsa pyaudio python-sounddevice
python audio alsa pyaudio python-sounddevice
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
edited Nov 17 '18 at 21:43
kaajaa328
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
asked Nov 17 '18 at 20:25
kaajaa328kaajaa328
113
113
It looks like you want us to write some code for you. While many users are willing to produce code for a coder in distress, they usually only help when the poster has already tried to solve the problem on their own. A good way to demonstrate this effort is to include the code you've written so far, example input (if there is any), the expected output, and the output you actually get (console output, tracebacks, etc.). The more detail you provide, the more answers you are likely to receive. Check the FAQ and How to Ask.
– roeen30
Nov 17 '18 at 21:13
add a comment |
It looks like you want us to write some code for you. While many users are willing to produce code for a coder in distress, they usually only help when the poster has already tried to solve the problem on their own. A good way to demonstrate this effort is to include the code you've written so far, example input (if there is any), the expected output, and the output you actually get (console output, tracebacks, etc.). The more detail you provide, the more answers you are likely to receive. Check the FAQ and How to Ask.
– roeen30
Nov 17 '18 at 21:13
It looks like you want us to write some code for you. While many users are willing to produce code for a coder in distress, they usually only help when the poster has already tried to solve the problem on their own. A good way to demonstrate this effort is to include the code you've written so far, example input (if there is any), the expected output, and the output you actually get (console output, tracebacks, etc.). The more detail you provide, the more answers you are likely to receive. Check the FAQ and How to Ask.
– roeen30
Nov 17 '18 at 21:13
It looks like you want us to write some code for you. While many users are willing to produce code for a coder in distress, they usually only help when the poster has already tried to solve the problem on their own. A good way to demonstrate this effort is to include the code you've written so far, example input (if there is any), the expected output, and the output you actually get (console output, tracebacks, etc.). The more detail you provide, the more answers you are likely to receive. Check the FAQ and How to Ask.
– roeen30
Nov 17 '18 at 21:13
add a comment |
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It looks like you want us to write some code for you. While many users are willing to produce code for a coder in distress, they usually only help when the poster has already tried to solve the problem on their own. A good way to demonstrate this effort is to include the code you've written so far, example input (if there is any), the expected output, and the output you actually get (console output, tracebacks, etc.). The more detail you provide, the more answers you are likely to receive. Check the FAQ and How to Ask.
– roeen30
Nov 17 '18 at 21:13