Hi,
I am trying to achive a better lower bass when volume is lower that a specified value.
Practically i want to apply a different filter depending on playing volume, but when filters are applyed, there is an intrerruption in audio.
Is it possible to add a feature to not have a gap in audio when appying filters, or is technically imposible?
Thank you.
Cornel
Hi,
unfortunately this is impossible with the filter design used here. For your use case, I would recommend to create your own DSP profile and use a "loudness" function:
https://wiki.analog.com/resources/tools-software/sigmastudio/toolbox/adialgorithms/loudnesslowerend
Best regards,
Daniel
Ok, thank you for providing the link.
Do you think you can commit to github the default dacdsp sigmastudio project so we can edit it in sigma?
Thank you.
Cornel
Hi,
it's already there:
https://github.com/hifiberry/hifiberry-dsp/blob/master/sample_files/dspproj/4way-iir-delay-mixer-asrccontrol.dspproj
Best regards,
Daniel
Hi Daniel,
I tried it and it worked to add some filters in sigmastudio, but i lost volume controls in alsamixer and rew filters.
I was talking about the profile that you used to create https://github.com/hifiberry/hifiberry-dsp/blob/master/sample_files/xml/dacdsp-default.xml.
I am using DAC+DSP board.
Thank you!
The profile linked above is the one that is used for the DAC+ DSP profile. You lost volume control and ALSA filters as you only deployed a DSP program from SigmaStudio. In this case, the system has no idea where the filters are located. You need to create a DSP profile from this SigmaStudio project:
https://github.com/hifiberry/hifiberry-dsp/blob/master/doc/dspprofiles.md
I'm just working on a new 192kHz profile with loudness control. This should be ready in a few days.
Best regards,
Daniel
Nice! Thanks for the pointers and awesome to hear you are working on 192kHz.
By the way, i believe a lot of people are thankful for your work and support for initiating us into this DSP world.