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No audio output from RCA with DAC + DSP

Diego Poderoso

January 30, 2019 08:32

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Hi, 

I am new with this Hifiberry DAC + DSP and I am trying to output the same audio signal from SPDIF(TOSLINK) and from RCA.

I have installed hifiberry os in my raspberry pi and output sound through SPDIF without any issues. I can connect to sigmastudio and modify one of your DSP profiles and install it.

But I can't output the signal through RCA. I have tried every output combination available on sigmastudio and no sound is heard. At the same time, SPDIF has been working fine.

Could you please explain to me how to output the signal through RCA?

Best Regards,

Diego.

 

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5 comments

• 0
  
  HiFiBerry team January 30, 2019 09:06

  If you're using one of our projects, you might still have the MUTE function enabled that mutes the output. You should check this. If you're not sure, remove the MUTE block.

  Best regards,
  Daniel

• 0
  
  Diego Poderoso January 30, 2019 09:10

  Hi Daniel,

  Yes, I have used one of your projects but SPDIF is working fine. So I don't think mute is enabled. Even so, I will try to remove it. Could you please tell me what audio output should I use for RCA in SigmaStudio?

  Best Regards,

  Diego. 

• 0
  
  HiFiBerry team January 30, 2019 09:11

  It's connected to the output 0 and 1. 
  In general I would recommend to parametrise one of the existing profiles instead of creating your own profile in SigmaStudio. What exactly do you want to do?

  Best regards,
  Daniel

• 0
  
  Diego Poderoso January 30, 2019 09:25

  I have used this profile: https://github.com/hifiberry/hifiberry-dsp/blob/master/sample_files/dspproj/4way-iir-delay-inputswitcher.dspproj

  My goal is to obtain the same output through SPDIF and RCA but different processed. Applying different filters to each channel.

  I will try with output 0 and 1, but are the first ones that I tried, and without the mute block. 

  Best Regards,

  Diego.

• 0
  
  Diego Poderoso January 30, 2019 10:02

  Got it! Finally, I have started from the beginning with your dsp profile and after removing mute and input switching algorithms SPDIF and RCA are working fine together. 

  Many thanks for your support.

  Diego.