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41
Scientific Discussion / Re: Does resampling algorithm can influence mp3 decoding quality?
Last post by bennetng -
He told me about high-end machines for doing this: "DCS, MSB, Meitner, Lynx". But obviously nothing related to mp3.
Some "hi-end" DACs may not use proper interpolation and can result in audible difference with different sample rates.
Here is an example:
https://www.stereophile.com/content/meitner-ma3-integrated-da-processor-measurements
Meitner, Fig.2

You can see the Meitner DAC above does different things with white noise vs tone input. The tone input is properly bandlimited while the white noise is not. Typical DACs usually look like this:
https://www.stereophile.com/content/okto-dac8-stereo-da-processor-measurements
Okto, Fig.6, AFRLP filter


Subsequently, when this Meitner DAC sees two tones in the input, the measurement result is no longer properly bandlimited:
Meitner, Fig.12


Yet the Okto always bandlimit the input, as long as the same filter is being used (AFRLP, which I suppose stands for Apodizing Fast Roll-off Linear Phase, one of the built-in filters from ESS chips)
Okto, Fig.17


All the tests above were using 44.1k input, and I don't know what the Meitner would do when using 176.4k input.
43
3rd Party Plugins - (fb2k) / Re: MathAudio Headphone EQ for Foobar2000
Last post by Bogozo -
As far as I understand Foobar2000 allows you to automatically activate a specific DSP component if you switch to a specific output device (File-Preferences-Playback-Output-Devices)
Foobar2000 allows you to automatically activate a specific DSP chain since version 2.0 only. In older versions this can be done with component foo_dynamicdsp - https://hydrogenaud.io/index.php/topic,108904.0.html , https://hydrogenaud.io/index.php/topic,96094.msg956094.html#msg956094
46
Scientific Discussion / Re: Does resampling algorithm can influence mp3 decoding quality?
Last post by Porcus -
no. A resampler doesn't have the ability to reconstruct information lost during a lossy encoding process. It only changes the sampling rate of a PCM signal while adding acceptable amount of distortion.
Just, be a bit careful about what could happen in certain circumstances:
Source is a floating-point format, volume could exceed digital full scale. It is not given that the playback chain protects against clipping.
Target format is integer (this case, 24-bit integer).
It would not be insane if DSP software that performs a conversion from float to integer - with or without resampling! - would take measures to protect against clipping, possibly lowering volume.
If the playback chain does not offer the same protection, the source may clip while target will not.

If they are compared without volume adjustment, humans are prone to preferring a slightly louder signal, everything else equal. (That of course makes listening tests without volume matching inadequate for the usual purpose - which is a different side to the same story though.)
47
3rd Party Plugins - (fb2k) / Re: MathAudio Headphone EQ for Foobar2000
Last post by k2k -
Output Question:  I use a DAC for my headphone use.  Is it possible to set up the EQ to run on one output device and not on another?  I use my speakers on an in ternal soundcard, and my HPs with a Chord DAC.
As far as I understand Foobar2000 allows you to automatically activate a specific DSP component if you switch to a specific output device (File-Preferences-Playback-Output-Devices).
48
3rd Party Plugins - (fb2k) / Re: foo_discogs
Last post by alec.tron -
But no luck. It's still writing my custom fields, DISCOGS_RELEASE_GENRES &  DISCOGS_STYLES in the example below (with the missing space, i.e. ";" instead of "; " to trigger foobars fields separation for flac/vorbis) as a single string.
The above issue that was affecting flac/vorbis files now seems to be gone.

There's a new bit now though, experienced with the standard ARTIST tag on this with flac/vorbis files:
https://www.discogs.com/release/25570711-Various-Music-Lovers-Club-004
Wheras all multi value artists (single artist values are fine...!), get now written with an extra " " at the end of the last artists name.
So what should be this (on the first track of the above release):
"Altriparty; Hypsidia"
gets written as this on a flac file:
"Altriparty; Hypsidia "
with an extra space at the end - in foobar tag editor syntax. In vorbis multi value fields this then is a multiple single value fields, one with "Altriparty" the other one with the extra space i.e. "Hypsidia "


Turns out the above assumption it's due to multi value artists is not true... this actually affects all discogs ANV Artist that are listed with a ANV Number, i.e. on this release:
https://www.discogs.com/release/24727004-Various-Music-Lovers-Club-003

So also if the only artist on a track, in the above case it's:
Anima (47)  Faber (4) Deer (2) Elixir (48) Secret Act (3) Secret Act (3) Read More
that get written out with an extra space at the end now, so I see
"Anima " 
"Faber "
etc.
Anyone else seeing this ?

Cheers.
c.
49
General - (fb2k) / Change default double-click functionality on Album Art (disable Picture Viewer)
Last post by Alumx -
Hello there, long time Foobar2k user and first time poster here  :D

I recently updated from Foobar2000 1.5.3 to Foobar2000 1.6.16 version, and there's this small specific thing that's been driving me up the walls
My question here is if its possible to disable the "Picture viewer" pop-out window when you double click on album art
In Foobar2000 1.5.3 if you double clicked on Album art image, it would open an explorer window with that song selected, but this feature got replaced by newer Picture Viewer window

I wonder if there's a way to bring back that "show in explorer" functionality? I looked everywhere on internet and there's barely any discussion on Picture Viewer, If anyone has any ideas/solution for this I'd be forever grateful 🙏

X
50
Scientific Discussion / Re: Does resampling algorithm can influence mp3 decoding quality?
Last post by OLPP -
He claimed that my mp3 compression resampled to 24/176.4 was probably better than the mp3 itself, due to my software resampling algorithm. I believe this is not true, or absolutely negligible, in regard to what is actually lost with the mp3 conversion (and never recovered whatsoever). But I'd like your thoughts on that point!
To directly answer your original question, no. A resampler doesn't have the ability to reconstruct information lost during a lossy encoding process. It only changes the sampling rate of a PCM signal while adding acceptable amount of distortion. Someone might notice the difference caused by a crappy resampler, like it, and claim that as an improvement. However, increase in preference doesn't necessarily mean improvement.