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
72
FLAC / Re: FLAC v1.4.x Performance Tests
Last post by bennetng -
It is pretty easy to kill -e too. The plot is configured in a way that signal below 16-bit noise floor appears black:
X
XX

-8
23.6 GB (25365043448 bytes)

-8e
23.5 GB (25329260329 bytes)

-8b8192 -A "subdivide_tukey(3);blackman"
23.4 GB (25181478740 bytes)

So, a 16/176.4 conversion using shaped dither makes -e a waste of time.
73
Other Lossy Codecs / Re: Descript Audio Codec (.dac) - 90x smaller than .wav?
Last post by Porcus -
Quote from: binaryhermit on
90x smaller than wav, huh?  Assuming they mean 16/44.1 PCM wav files, that'd be somewhere in the ballpark of 16 kbps, right?
Yeah, except: the sample files are mono.
So that means CDDA encoded at 16 kbps as dual mono, without any stereo decorrelation strategy. I have not bothered to look up whether they have any stereo decorreleation algorithm (yet), but obviously that is room for improvement - and also an opportunity to spend more processing power.

Quote from: binaryhermit on
I'm going to go out on a limb and say it either sounds bad
Well you can test it ... ? Although the samples are not that interesting ...
Quote from: binaryhermit on
or is completely impractical for most use cases.
As of now? Sure.
77
Other Lossy Codecs / Re: Descript Audio Codec (.dac) - 90x smaller than .wav?
Last post by przemyslawo -
Python is slower than compiled languages such as C++ or Go: https://benchmarksgame-team.pages.debian.net/benchmarksgame/fastest/python3-go.html

But efforts have been made for speeding up Python, such as Codon compiler: https://github.com/exaloop/codon

I don't know if Python code would be that slow on a GPU as well as in a CPU, but it would be awesome to have this codec compiled through LLVM.

Codon is still not ready to compile 100% of Python code. But the developers are working to implement the missing features such as metaclass support.
80
Other Lossy Codecs / Re: Descript Audio Codec (.dac) - 90x smaller than .wav?
Last post by C.R.Helmrich -
Quote from: rc55 on
... it's made a 40MB exe ...
This does not include the weights file which is ~300MB. The weights file contains the model data used to encode and decode the audio and is a necessity, and the model is not interchangeable. You have to use the same model to decode any encoded file.
Thanks for the analysis! Out of curiosity: could you 7zip (preset Ultra) that 40MB exe and 300MB weight file and let us know what file size comes out? That would be a rough estimate of how much room for reduction there is.

Thanks,

Chris