[SOLVED] Volume Settings

Hi,

I installed a RPi2 with a HifiBerry DAC+ Pro (and a 7″ touchscreen).

According to the Max2Play support I configured the HifiBerry:
– Set the Digital Volume to 96%
– Turn off the “Analogue Playback Boost” and
– Leave the “Analogue Boost” as is (100).

So far everything is fine, audio output is OK.

If I configure squeezelite with the options: “-o hw:0 -V Digital” (according to your proposal) I get no longer any audio output. Erasing the options leads to normal audio output again.
What am I doing wrong after having added the options “-o hw:0 -V Digital”?

Rainer

Hi Stefan,

thanks for your support, “-o hw:1 -V Digital” did the job.
By the way: how do I deactivate the inbuild audiocard on the RPi?

Rainer

Hi Stefan,

not sure which setting you mean under „Raspberry Pi Settings“/“Raspberry Einstellungen“.

Rainer

Hi

Is it possible to use both the rotary encoder in IQaudio dac+ and volumen control on my phone at the same time?

If I do as described (options: “-o hw:0 -V Digital”) it’s only the rotary encoder that works.
If i don’t use the option, volume on my phone works from 0-100% volume, but rotary encoder only works from 0 to x% where X = the volume settings on my phone!

With option ON, it would be nice if the volume control on the phone would work on HW volume too:)

Thanks in advance

Bjarne

• This reply was modified 8 years, 1 month ago by bjarne.
• This reply was modified 8 years, 1 month ago by bjarne.

Hi again

When I switch between using rotary encoder and volume slider i LMS I find that the synchronization is missing.
If I set LSM volume to 50% and then turn the encoder the volume will be set to what it was the last time the encoder was used ±1 step.

How can I change that?

Thanks in advance.
Bjarne

Hi,

to get the Rotary Encoder on IQAudio-Cards working with Synchronisation of volume with Squeezebox Server (control with App / webinterface / rotary encoder) you need to add following to the command line options of Squeezelite (not dependend of build-in audio active /not active):

-o hw:CARD=IQaudIODAC -V Digital -Q

I also added this to the description of the Rotary Encoder now (in Beta).

Description of Parameters:
– The Parameter „-Q“ starts the synchronisation with the Squeezebox Server
– The Parameter „-V“ makes sure to use the correct alsamixer control
– The Parameter „-o“ uses the dircet hardware as audio output (needed to use volume control on alsa level)

Important: This will only work with the Squeezelite in Max2Play and not in other distributions!

Hi Bjardne,

very good so far 🙂

If you really like to change the volume steps, this is a little more difficult, as we just use the file from IQAudIO. If you know how to compile a file and log in with SSH on the Pi, you can do it this way:

1. get the file from https://github.com/iqaudio/tools/blob/master/IQ_rot.c and edit lines
currentVolume = currentVolume + 10;
and
currentVolume = currentVolume - 10;
to the step you like – e.g. „5“ or „2“ to use smaller steps.

2. complile the file with
gcc IQ_rot.c -oIQ_rot -lwiringPi -lasound

3. change the existing file in /opt/IQ_rot with the one you just compiled

4. set file permissions with chmod 777 /opt/IQ_rot

This should do the trick…

All the Best,
Stefan

Hi Hilary,
Could check your Music Player Sound Card Settings in the MPD menu and tell us what the parameters are?

Those parameters are all correct. The DAC+ light does not have a volume control mixer. Once the selection of the DAC+ light has been set, it is automatically activated to a 100 %. You might want to try a different end device and turn up the volume there.

You do not necessarily need one, usually a HiFi system (stereo) on its own is enough to amplify the signal of a DAC. What end device are you currently connecting your DAC to?

If you do not have an amplifying unit, the Amp+ would make a lot of sense since it does not require any additional amplification. You can just connect your passive speakers directly. According to HiFiBerry, the Amp+ works best with speakers of 4-8 ohms, so perfect for yours.

Hi,

it seems i have similar problems like Bjarne regarding the syncronization of volume between slider and encoder, but i`m using the Justboom Amp Hat.

When turning the rotary at first the volume steps (i think to volume form settings) and then in- or decreases. But i want the it in- or decreases the actual Volume.

@rens: the encoder is changing the Volume on Alsa level. To connect the Alsa volume control to Squeezelite just use the Max2Play settings on the Justboom Plugin page: first set up the Amp Hat as soundcard and then follow the description on the same page for the rotary encoder installer. The Squeezelite audioplayer must have the commandline options set to use „hardware volume control“ and „alsasync“. Both are explained on the page.

@RHCP-NG: The Option „-Q“ (synchronize Alsa-volume changes e.g. from rotary encoder with Squeezebox Server) might not be available if you have an older version of Squeezelite. You should try to update Squeezelite on the Audioplayer-Page (advanced settings Squeezelite) to get the latest version. If it still does not work, please post the „command line parameter“ field of Squeezelite Advanced Options and more details on your setup.
The „-Q“ option does only work for soundcards that offer volume control and you need to specify this volume control element! In case of Justboom cards the complete command line parameter for Squeezelite looks like „-o hw:CARD=sndrpijustboomd -V Digital -Q“.