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General Audio / Re: Vorbis better than opus?
Last post by Porcus -
You're too polite to  called it "intellectual theories", I call them what they are. BS.

I beg to differ. It is hardly controversial to say that lossy codecs have improved over thirty years (like, Monty's classic-at-this-forum, search for [2] and read the footnote: )
... so what did they start lossy codecs at? Some pretty good ideas of what should work, and some pretty good ideas of what could improve. What actually improves, well you can test - searching for improvements (better than blind search), that is brainwork.
And if you have found an improvement up to bitrate B, but have not yet picked up a B+100 troublesome signal, what then? Inferring how to extrapolate from data is harder than your statistics 101, but it surely isn't BS.

In the above link, Monty also quotes some anonymous user:
"[The Sampling Theorem] hasn't been invented to explain how digital audio works, it's the other way around. Digital Audio was invented from the theorem, if you don't believe the theorem then you can't believe in digital audio either!!"
True or not ... that puts it on intellectual theory. The sampling theorem does not tell you how high limiting frequency is adequate for musical reproduction for the human ear (with all the filters that were invoked in the technology's infancy), that is an empirical exercise.
Support - (fb2k) / Re: 1.6.7 beta 8 => Exclusive=> Unrecoverable playback error: Unsupported format ! !
Last post by sveakul -
Note that exclusive output - like all output plugins of the sort - doesn't perform any resampling of its own; if your device isn't agreeing with the sample rate of your audio files, errors happen. This is currently the intended behavior.

I'll think of some solution for this for post-1.6.7, perhaps negotiate some optimal rate to resample to.
Thanks Peter for your work on getting this right but I would encourage you NOT to engage some auto-resampling routine to Wasapi exclusive.  As you described,  passing the file rate straight through to the device is intended behavior.  Users with devices that are not compatible with the native sample rates of their files already have several options to handle this via Foobar DSP resampling plugins.  IMO, why add an extra layer of handling to something that is proving tricky enough as-is to fix.
General Audio / Re: Good requantizers?
Last post by C.R.Helmrich -
Hmm, I guess that depends on the 'D', i.e. way the predictor in your particular DPCM format works. Generally speaking, when decoding each DPCM value (by adding the predicted value which is also requantized to 8 bit), you may in some cases end up with a larger value range than what would fit into 8 bit. But with proper format constraints in place, such situations could be avoided, and then indeed the decoding might be lossless. But I don't know of any such simple DPCM format (without adaptive requantization).

Support - (fb2k) / Re: 1.6.7 beta 8 => Exclusive=> Unrecoverable playback error: Unsupported format ! !
Last post by spindle -

Thank you for the insight.

This looks like a case of a Muppet user here not understanding fully what he's doing /  testing or the sophistication of what you're producing.

Trying to follow, even if not fully understanding, what you say, I ran the RME Hammerfall HDSPE settings (which, up to now, I have never had cause to touch) and, perhaps unsurprisingly, so soon as I select a sample rate (under Clock Mode) that matches the file(s) being played, all works perfectly - even up to an admittedly daft 24-177.

I only say in my defence that I may have been misled by the first file that I sampled and reported as working: it was 24-44 and played without apparent error even though the sample rate was still set to a standard 44.1.  It's been set as that ever since I installed the card (and its predecessor) and I've never had to adjust the sample rate before through all the various developments in exclusive mode in FB2K that I have followed assiduously.

If you can spare a moment to enlighten me it might prevent me making similar unhelpful errors in the future.


Support - (fb2k) / Re: 1.6.7 beta 8 => Exclusive=> Unrecoverable playback error: Unsupported format ! !
Last post by Peter -
Many Thanks Peter.

foobar2000 1.6.7 beta 12

No Problem. It will be played good
The noise is still terrible.
Thanks for confirming.
As for FOSTEX, looks like I'll have to resurrect the advanced preferences option, to set the hardware buffer to 50ms (per BeepExclusive results).
General - (fb2k) / The wheel adjusts the volume of 1 dB, and the pointer 0,5 dB
Last post by BingoMan -
The wheel adjusts the volume of 1 dB, and the pointer 0,5 dB. In the settings Volume step (dB) = 1 dB. The volume control in the status bar and the main Volume Control behave differently at a volume value of 0.5 dB. In the status bar, the volume is reset to integer values. Basically, Volume Control is regulated by a fractional 0.5 dB, although it is added by 1 dB.

It is possible that with the setting Volume step (dB) = 1 dB, the volume everywhere is regulated by the whole 1 dB and no fractional 0.5 dB, i.e. 0, 1, 2, 3, 4, 5 ... When setting 0.5 dB, the volume was adjusted by 0.5 dB - 0, 0.5, 1, 1.5, 2, 2.5 ...? In the status bar and in the main regulator.
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