Re: [Alsa-user] Line-in volume
On Tue, 21 Dec 2021 19:56:32 -0800, Paul A. Steckler wrote: >I'd like to play sound from a device connected to my sound card's >line-in. So the signal chain is [DEVICE analog out]->[analog in SOUND CARD analog-to-digital converter]->[Linux]->[digital-to-analog converter SOUND CARD analog out]->[analog in ACTIVE SPEAKERS without volume control] ? On Wed, 22 Dec 2021 10:12:21 -0800, Paul A. Steckler wrote: >On Tue, Dec 21, 2021 at 11:23 PM Ralf Mardorf wrote: >> Please describe in what way the signal is "too loud". Is the signal >> distorted? Is the speaker's/headphone's sound too loud? > >The sound from the speakers is too loud, although not distorted. > >There are attenuator devices you can purchase, which might be a >solution. I'm hoping for a software solution, though. If the above sound chain is correct, then you don't need to adjust the "line in" level. You need to adjust the output level. If you can't do it by the audio device, then yes, you can use software. Btw. an attenuator device could be a simple potentiometer or a cheap mixer. Why is the "device" connected to the Linux computer? Aren't you already using software that allows to adjust the output level? It's not unusual that you can't adjust levels using alsamixer, e.g. when using a class compliant USB audio interface. I can't comment on pulseaudio, since I never ever would install it. I'm using either jackd or plain ALSA, but to adjust speaker volume I'm using an analog amplifier. ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Line-in volume
On Tue, Dec 21, 2021 at 11:23 PM Ralf Mardorf wrote: > Please describe in what way the signal is "too loud". Is the signal distorted? > Is the speaker's/headphone's sound too loud? The sound from the speakers is too loud, although not distorted. There are attenuator devices you can purchase, which might be a solution. I'm hoping for a software solution, though. -- Paul ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Line-in volume
On Tue, 21 Dec 2021 19:56:32 -0800, Paul A. Steckler wrote: >I'm running Linux Mint 20.2 (x64 / Cinnamon). > >I'd like to play sound from a device connected to my sound card's >line-in. I'm able to do so by enabling the loopback device in >alsamixer. But even with the line-in level and line-in booster level >set to 0, the volume is too loud. > >Adjusting the line-in volume level in pavucontrol seems to have no >effect. > >Is there a way to reduce the volume level to an acceptable level? Hi, roughly speaking: As long as the analog input circuit is fed with an appropriate analog audio signal and the digital input domain doesn't exceed 0 dBFS, the signal is "acceptable". Attenuation is only required when mixing (especially non-floating point) digital audio signals, but when doing this, you are anyway using e.g. the digital mixer of a DAW, that allows to adjust the signals. You probably want to adjust the output signal of your audio interface or better, just the level of the speaker's/headphone's analog amplifier. Or else, if the analog output of the device connected to the analog input of your digital audio interface doesn't fit, you might need to convert impedance. IOW I can hardly imagine something that requires to adjust line in levels, apart from some exceptions, for this you will use gear that provides to adjust the analog input levels of your digital audio interface. Let alone that for such a setup, you probably want to remove pulseaudio. Please describe in what way the signal is "too loud". Is the signal distorted? Is the speaker's/headphone's sound too loud? That each and any app has got volume controls nowadays is a silly custom. Only very experienced audio engineers know how to use layers of level controls. When connecting line out with line in typically no "line" level control is needed at all. Regards, Ralf -- “Awards are merely the badges of mediocrity.” ― Charles Ives ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] Line-in volume
I'm running Linux Mint 20.2 (x64 / Cinnamon). I'd like to play sound from a device connected to my sound card's line-in. I'm able to do so by enabling the loopback device in alsamixer. But even with the line-in level and line-in booster level set to 0, the volume is too loud. Adjusting the line-in volume level in pavucontrol seems to have no effect. Is there a way to reduce the volume level to an acceptable level? -- Paul ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
