Skip to main content ↑ ↓

Notice

Please note that most of the software linked on this forum is likely to be safe to use. If you are unsure, feel free to ask in the relevant topics, or send a private message to an administrator or moderator. To help curb the problems of false positives, or in the event that you do find actual malware, you can contribute through the article linked here.
Recent Posts
71
Other Lossy Codecs / Re: exhale - Open Source USAC encoder
Last post by C.R.Helmrich -
Thanks for testing this! I'm reluctant to change the exhaleApp header text at this late stage, but can you please try the following change and tell me whether, after recompiling this on RISC-V, the garbage text disappears?

In file src/app/exhaleApp.cpp, change lines 60-62 to:

#if defined (__riscv) || defined (__riscv__) // coloring not interpreted on RISC-V
#define EXHALE_TEXT_INIT ""
#define EXHALE_TEXT_BLUE ""
#define EXHALE_TEXT_PINK ""
#else
#define EXHALE_TEXT_INIT "\x1b[0m"
#define EXHALE_TEXT_BLUE "\x1b[36m"
#define EXHALE_TEXT_PINK "\x1b[35m"
#endif

Thanks,

Chris
72
FLAC / Re: FLAC v1.4.x Performance Tests
Last post by Porcus -
sox -D -n -r 48000 -c 1 -b 16 4567sox.wav synth 10 sine 4567

-D for no dithering. Differs a little from yours, so there is a "not exact scine'nce" pun waking here.
At least each one-second chunk is identical for this one (edit: not sure if that is a good thing for testing ...), but still it xz's to bigger than yours.



73
FLAC / Re: FLAC v1.4.x Performance Tests
Last post by bennetng -
Quote from: Porcus on
Quote from: bennetng on
Quote from: Porcus on
Sure it is undithered?
The files were generated using Audition, and if you trust there is no bug, then it is undithered.
So, sample value created by way of "multiplying sample number by 2pi to certain precision" and getting different round-off every now and then?
Audition 1.5 was a 2004 product which is no longer supported, and I am not good enough to reverse engineer their code.

Within freewares I know, apart from foobar, Audacity and SoX also support tone generation, so you can try to generate some files and compare them.
74
FLAC / Re: FLAC v1.4.x Performance Tests
Last post by Porcus -
Quote from: ktf on
Quote from: Porcus on
Yes, - or: those vectors (for this specific file!) would be a test whether this is the correct takeaway from it. Because that "specific condition" should not occur when searching for the best among second-order predictors (coefficient matrix is invertible at order = 2).
If those vectors improve, then you got a more general round-off issue at hand - which may in the larger picture be part of the explanation why -p sometimes does better than one would expect.
Maybe try an (old) IRLS build. Could very well be those predictors show up. When I did some tests, those builds did very well on sines.
Same predictors at  --lax -pl2 -b48000 -A "<quitealot>;irlspost-p(1999)"

Quote from: bennetng on
Quote from: Porcus on
Sure it is undithered?
The files were generated using Audition, and if you trust there is no bug, then it is undithered.
So, sample value created by way of "multiplying sample number by 2pi to certain precision" and getting different round-off every now and then?
75
CD Hardware/Software / Re: playing ripped mp3 files in car shows band as "unknown"
Last post by korth -
Quote from: Roseval on
Check your tags, especially if Album Artist is populated.

As Roseval said, 'Album Artist' may be expected. If you are using 'Add ID3 tag' in EAC then TPE2 won't be created if 'CD Performer' is blank in the main window. You could try copying the field in 'CD Artist' and pasting to 'CD Performer', rip a few tracks and see if BAND shows up on the player.
76
FLAC / Re: FLAC v1.4.x Performance Tests
Last post by bennetng -
Quote from: Porcus on
Sure it is undithered?
The files were generated using Audition, and if you trust there is no bug, then it is undithered. Also, if you put my old, dithered version into xz, file size will be bigger. Also, as mentioned, the dithered version has a cleaner noise floor in the FFT view.

[edit]
Sines can be generated using foobar as well. Go to File > Add loacation, type tone://4567, 10
This seems to generate a full scale sine up to +/-1.0 (+/-32768), so be careful with the +1 offset.
The sample rate of the tone can be set by searching "tone" in Advanced preferences.

Also, adding dither to full scale sine may result in clipping.
77
FLAC / Re: FLAC v1.4.x Performance Tests
Last post by ktf -
Quote from: Porcus on
Yes, - or: those vectors (for this specific file!) would be a test whether this is the correct takeaway from it. Because that "specific condition" should not occur when searching for the best among second-order predictors (coefficient matrix is invertible at order = 2).
If those vectors improve, then you got a more general round-off issue at hand - which may in the larger picture be part of the explanation why -p sometimes does better than one would expect.
Maybe try an (old) IRLS build. Could very well be those predictors show up. When I did some tests, those builds did very well on sines.
78
General Audio / Re: AI language models can exceed PNG and FLAC in lossless compression, says study
Last post by ktf -
Quote from: Porcus on
The point of this study seems to be that when you have a language modelling tool - "foundation models" in their lingo - it represents the "language" it models in a compressed way. And apparently not only the language it was trained on - which was written English, not recordings of spoken English. Supporting the notion that these models learn how to handle language generally, not just one particular language.
Sure, I get that. Very interesting.

However, the study then goes on to compare the "performance" of their tool (just the file size, no other parameters) with various other compressors. The problem is, the input data has been mangled to be processed by this tool to the point where the specialized compressor are no longer capable. If FLAC compresses an image better than PNG, the input "image" can no longer be considered representative. And when the data isn't representative, why bother comparing at all?
80
CD Hardware/Software / Re: playing ripped mp3 files in car shows band as "unknown"
Last post by Roseval -
You might have a look at Foobar Mobile. It served me fine for years when using a relatively small MP3 collection (< 200 GB). The day I moved to a 1 TB and loaded it with FLAC, Foobar Mobile had troubles to detect albums properly so I ditched it.

A simple solution is using media players like Foobar or Musicbee. Check your tags, especially if Album Artist is populated.