Re: how to record sound being played using arecord
On 10/3/21 9:23 AM, Michael Lange wrote: Hi, Because the thing you wanted to do did *not* work for you? ;-) after loading them, they don't help, i can't hear anything from recording which commands exactly did you try? Did you set the capture channel to "Vol" either by some gui mixer or with the aumix command I suggested? The only reason I suggested loading the sound_*_oss modules is that alsamixer/amixer seems to have no equivalent for this. Best regards Michael Thank Michael! i've solved it, with help from pulseaudio, not OSS compatibility module but it's done in fedora, not in stretch i've installed pavucontrol for stretch, it doesn't work pavucontrol has several tabs: Playback, Recording, Output Devices... under Playback tab, it shows "System Sounds" i can't change sound volume with scrollbar
Re: how to record sound being played using arecord
Hi, On Sat, 2 Oct 2021 22:02:39 -0400 lou wrote: (...) > why shall i need OSS compatibility module if alsa works? Because the thing you wanted to do did *not* work for you? ;-) > after loading them, they don't help, i can't hear anything from > recording which commands exactly did you try? Did you set the capture channel to "Vol" either by some gui mixer or with the aumix command I suggested? The only reason I suggested loading the sound_*_oss modules is that alsamixer/amixer seems to have no equivalent for this. Best regards Michael .-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-. You go slow, be gentle. It's no one-way street -- you know how you feel and that's all. It's how the girl feels too. Don't press. If the girl feels anything for you at all, you'll know. -- Kirk, "Charlie X", stardate 1535.8
Re: how to record sound being played using arecord
On 10/2/21 9:38 AM, Dan Ritter wrote: Yes, you want to read https://dt.iki.fi/record-system-output-alsa for an example. -dsr- to Dan: it's not easy to follow instruction at https://dt.iki.fi/record-system-output-alsa after running "|modprobe snd-aloop", i can hear sound being played| |no wonder i can hear nothing from recording| to Michael: why shall i need OSS compatibility module if alsa works? after loading them, they don't help, i can't hear anything from recording |ffmpeg -f alsa -i hw:1,1 -c:a flac output.flac command above is from |https://dt.iki.fi/record-system-output-alsa i use it to record, i can't hear anything from recording ~$ aplay -l List of PLAYBACK Hardware Devices card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0 card 1: Loopback [Loopback], device 0: Loopback PCM [Loopback PCM] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 card 1: Loopback [Loopback], device 1: Loopback PCM [Loopback PCM] Subdevices: 8/8 Subdevice #0: subdevice #0 Subdevice #1: subdevice #1 Subdevice #2: subdevice #2 Subdevice #3: subdevice #3 Subdevice #4: subdevice #4 Subdevice #5: subdevice #5 Subdevice #6: subdevice #6 Subdevice #7: subdevice #7 || ||
Re: how to record sound being played using arecord
Hi, On Sat, 2 Oct 2021 03:55:50 -0400 lou wrote: > Could you give me commands that record sound being played? apart from the solution using alsaloop Dan already pointed out, there is a rather simple way to do this with Alsa's OSS compatibility modules: sudo modprobe snd-pcm-oss aumix -v R Explanation: The first command loads the oss-compatibility drivers (snd-pcm-oss and snd-mixer-oss); to automatically load these drivers on each boot, just add the line snd-pcm-oss to /etc/modules . The second command sets the main Volume channel (-v) as recording source (R); you may need to do sudo apt install aumix first, though. Of course, you can use any gui mixer app that can handle the OSS mixer device instead of the shell command to set the recording source. Just select the channel that is usually labeled "Vol". > > Can arecord use mp3 format? Not directly as far as I know. However you can use something like: arecord -V stereo -f cd | sox -t wav -r 44100 -c 2 -b 16 - test.mp3 (requires sox and libsox-fmt-mp3). This should create a 128 kBit/sec CBR mp3 output file. Please consult the manpages of arecord and sox for fine tuning each command's options. Best regards Michael .-.. .. ...- . .-.. --- -. --. .- -. -.. .--. .-. --- ... .--. . .-. Totally illogical, there was no chance. -- Spock, "The Galileo Seven", stardate 2822.3
Re: how to record sound being played using arecord
lou wrote: > > On 10/2/21 7:46 AM, Dan Ritter wrote: > i don't have microphone > > i want to record sound being played by application, alsaloop is needed > > i will use .wav or .au format, hopefully my cell phone can play it Yes, you want to read https://dt.iki.fi/record-system-output-alsa for an example. -dsr-
Re: how to record sound being played using arecord
On 10/2/21 7:46 AM, Dan Ritter wrote: Do you have a microphone plugged in? Try arecord test.wav and make some noise, then hit ctrl-c to stop the recording. Use aplay test.wav to play it back. If you need a more sophisticated interface, consider installing audacity. -dsr- Thank Dan! i don't have microphone i want to record sound being played by application, alsaloop is needed i will use .wav or .au format, hopefully my cell phone can play it
Re: how to record sound being played using arecord
lou wrote: > Could you give me commands that record sound being played? > > i don't know how to use alsaloop > > Can arecord use mp3 format? Nothing records directly into mp3; mp3 is a compressed format. ffmpeg or lame can turn the .wav or .au that you get from a recording system into an mp3. > ~$ amixer > Simple mixer control 'Master',0 > Capabilities: pvolume pswitch pswitch-joined > Playback channels: Front Left - Front Right > Limits: Playback 0 - 65536 > Mono: > Front Left: Playback 31609 [48%] [on] > Front Right: Playback 31609 [48%] [on] > Simple mixer control 'Capture',0 > Capabilities: cvolume cswitch cswitch-joined > Capture channels: Front Left - Front Right > Limits: Capture 0 - 65536 > Front Left: Capture 3479 [5%] [off] > Front Right: Capture 3479 [5%] [off] > > ~$ arecord -l > List of CAPTURE Hardware Devices > card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] > Subdevices: 1/1 > Subdevice #0: subdevice #0 Do you have a microphone plugged in? Try arecord test.wav and make some noise, then hit ctrl-c to stop the recording. Use aplay test.wav to play it back. If you need a more sophisticated interface, consider installing audacity. -dsr-
how to record sound being played using arecord
Could you give me commands that record sound being played? i don't know how to use alsaloop Can arecord use mp3 format? Thanks! ~$ amixer Simple mixer control 'Master',0 Capabilities: pvolume pswitch pswitch-joined Playback channels: Front Left - Front Right Limits: Playback 0 - 65536 Mono: Front Left: Playback 31609 [48%] [on] Front Right: Playback 31609 [48%] [on] Simple mixer control 'Capture',0 Capabilities: cvolume cswitch cswitch-joined Capture channels: Front Left - Front Right Limits: Capture 0 - 65536 Front Left: Capture 3479 [5%] [off] Front Right: Capture 3479 [5%] [off] ~$ arecord -l List of CAPTURE Hardware Devices card 0: Intel [HDA Intel], device 0: ALC272 Analog [ALC272 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0
