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Author Topic: Upsampling is not working - ALSA  (Read 1966 times)

wlochu

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Upsampling is not working - ALSA
« on: July 10, 2020, 04:54:46 am »

Hi, I have similar issue as in thread https://yabb.jriver.com/interact/index.php?topic=111435.0

Message "Playback could not be started on the output 'ALSA' ... ' apears when DSDx4 is chosen in DSP studio.

Chosen device is plughw: CARD = audio, DEV=0 [ALSA] McIntosh HD USB Audio, USB audio. Hardware device with all software conversions

I'm using the newest Linux Mint 20.

I've updated limits.conf [attachment] file but still I have issue with upsampling to DSDx4

DSD is working fine (Bitstreaming = Yes (DSD))

What else I can do?
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bob

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Re: Upsampling is not working - ALSA
« Reply #1 on: July 10, 2020, 09:44:31 am »

Don't use plughw.
Use the hardware device, hw:whatever.
In the Audio device options check the native dsd box if your device supports it.
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wlochu

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Re: Upsampling is not working - ALSA
« Reply #2 on: July 10, 2020, 10:05:56 am »

thx, I tried:

hw: CARD = audio, DEV=0 [ALSA] McIntosh HD USB Audio, USB audio. Hardware device without any conversions
front: CARD = audio, DEV=0 [ALSA] McIntosh HD USB Audio, USB audio. Front speakers


result was the same.

When I have output DSD files in native DSD format checked and Bitstreaming = Yes (DSD) then I have message "Playback could not be started on the output 'ALSA' ... "

I used only native DSD format checked. When I was playing DSD (ISO or .dsf) DAC was presenting 352,8 kHz. As well when I was using DSP and upsampling DSDx4 I received the same message about "Playback could not be started on the output 'ALSA' ... "

EDIT:

W PCM audio format is available:
- auto
- s32_le
- s24_3le
- s24_le
- s16_le

is it ok?
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bob

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Re: Upsampling is not working - ALSA
« Reply #3 on: July 10, 2020, 04:21:56 pm »

go to a terminal window and run
/usr/lib/jriver/Media\ Center\ 26/alsacap
and attach the results please.
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wlochu

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Re: Upsampling is not working - ALSA
« Reply #4 on: July 10, 2020, 04:51:02 pm »

sure

*** Scanning for playback devices ***
Card 0, ID `PCH', name `HDA Intel PCH'
  Device 0, ID `ALC233 Analog', name `ALC233 Analog', 1 subdevices (1 available)
    2 channels, sampling rates 44100, 48000 Hz
    Sample formats: S16_LE, S32_LE
      Subdevice 0, name `subdevice #0'
  Device 3, ID `HDMI 0', name `HDMI 0', 1 subdevices (1 available)
    2..8 channels, sampling rates 32000, 44100, 48000 Hz
    Sample formats: S16_LE, S32_LE
      Subdevice 0, name `subdevice #0'
  Device 7, ID `HDMI 1', name `HDMI 1', 1 subdevices (1 available)
    2..8 channels, sampling rates 32000, 44100, 48000, 88200, 96000, 176400, 192000 Hz
    Sample formats: S16_LE, S32_LE, IEC958_SUBFRAME_LE
      Subdevice 0, name `subdevice #0'
  Device 8, ID `HDMI 2', name `HDMI 2', 1 subdevices (1 available)
    2..8 channels, sampling rates 32000, 44100, 48000, 88200, 96000, 176400, 192000 Hz
    Sample formats: S16_LE, S32_LE, IEC958_SUBFRAME_LE
      Subdevice 0, name `subdevice #0'
  Device 9, ID `HDMI 3', name `HDMI 3', 1 subdevices (1 available)
    2..8 channels, sampling rates 32000, 44100, 48000, 88200, 96000, 176400, 192000 Hz
    Sample formats: S16_LE, S32_LE, IEC958_SUBFRAME_LE
      Subdevice 0, name `subdevice #0'
  Device 10, ID `HDMI 4', name `HDMI 4', 1 subdevices (1 available)
    2..8 channels, sampling rates 32000, 44100, 48000, 88200, 96000, 176400, 192000 Hz
    Sample formats: S16_LE, S32_LE, IEC958_SUBFRAME_LE
      Subdevice 0, name `subdevice #0'
Card 1, ID `Audio', name `McIntosh HD USB Audio'
  Device 0, ID `USB Audio', name `USB Audio', 1 subdevices (1 available)
    2 channels, sampling rates 32000, 44100, 48000, 88200, 96000, 176400, 192000, 352800, 384000 Hz
    Sample formats: S16_LE, S32_LE, S24_3LE
      Subdevice 0, name `subdevice #0'
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bob

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Re: Upsampling is not working - ALSA
« Reply #5 on: July 10, 2020, 04:57:49 pm »

It doesn't support native DSD so you can uncheck that in the Audio->Device options.
You can try DSD bitstreaming under Audio->settings.
That will DoP but that doesn't often go up to x4
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wlochu

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Re: Upsampling is not working - ALSA
« Reply #6 on: July 13, 2020, 06:35:57 am »

Ok, DOP in DSP studio works fine. Thx

I assume that my DAC hasn't support for native DSD added to ALSA and/or the Linux kernel itself :/
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