Squeeze dsp plugin

Squeeze
1

theres a squeeze plugin call ed dsp that allows users to use a convolution FIR filter for squeeze playback. Does anybody know where to to put this file on an Antipodes so that the squeeze plugin can see it?

2

Due to the way that the developer has made this plug-in, the files need to reside in the root directory of the OS, we do not give users access to this location for obvious reasons, so we have reached out to the developer.

1 Like
3

thanks Mark, much appreciated, would really love to use convolution on my system with squeeze

4

I resume the thread to report that installing this plugin means losing the playback of DSDs… I have a K50 G4 ver. 5.0.1. When you uninstall the plugin everything goes back to normal…

5

I have to correct my room with a parametric equalizer, but I don’t know how to do it: the C3PO plugin accepts the “Equalizer 40 10q -18” setting (for example, recommended command by the plugin developer here Correzione ambientale, C-3PO e SOX) but then it is not used. Obviously with C3PO activated! I don’t want to use convolution because, in my opinion, it sounds worse than the parametric equalizer (test done with the Roon - Roon setting). Any ideas?

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There is another dsp plugin for squeeze that works fine, cant remember what its called sorry im away from home now. If your convolution sounds worse than eq theres a good chance you haven’t done it properly. This guy seems to be the expert on convolution for home audio i use his techniques and im very happy with the results https://youtu.be/qoFZPlXrTeM?si=agQA08j_EuIL_67_

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Thanks for the heads-up: I also use REW. My room has three critical frequencies: 40, 76, and 103 Hz, so I only correct those. I have “special” speakers (Verity Audio) with rear woofer that don’t like phase adjustments (at least in my opinion…): hence the correction using parametric EQ correction. Anyway, I’m going to “study,” we never stop learning!!!

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I also want to point out that with this plugin (even when not activated!) 16-44 files are sent to the DAC as 24-44 and I don’t like this… I have permanently deleted it

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According to our soon to be overlords:

:white_check_mark: Does the LMS DSP plugin force 24-bit 44.1k output?

Often yes, the moment DSP is installed/available the playback chain may negotiate 24-bit, even if:

  • the source is 16-bit / 44.1k
  • no DSP filter is actively applied
  • DSP toggle appears “off”

But…

:point_right: It is not actually converting the audio

What happens is:

  • LMS / Squeezelite switches to a 24-bit PCM pipeline
  • your original 16-bit samples are simply padded into 24-bit words
  • there is no resampling
  • no re-dithering
  • no alteration of the music data
  • it remains bit-perfect content, just inside a 24-bit container

This is normal behaviour in LMS whenever:

  • DSP is available
  • ReplayGain exists
  • LMS volume control can operate
  • crossfade / mixing could theoretically occur

LMS chooses 24-bit so it can process if needed without clipping, even if you’re not using it.

:test_tube: How to confirm it’s only padding

In LMS signal path / stream info you’ll see something like:

Source: 16/44.1 → Output: 24/44.1
and no DSP effects listed
That means padding only.

If real processing were happening you’d see:

  • SoX
  • EQ
  • gain changes
  • resample notices

:heavy_check_mark: Bottom line

  • Yes, you may see 24/44.1
  • But no audio quality change is happening
  • It’s not “processing”, only format padding

:memo: If you want DSP but still care about quality

Then leave 24-bit enabled.
24-bit gives processing headroom and does not degrade quality (it’s preferred in DSP workflows).

1 Like
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Thanks!!! Clear explanation, I’m now trying the MinimServer + MPD setup (I want to try jPlay) … I’ll be back to Squeeze in the coming days and the topic will become interesting again.