search for: psycha

Displaying 3 results from an estimated 3 matches for "psycha".

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2000 Dec 20
1
Short block test
Frank Klemm made the clip to test short block switching - it's made of series of short periodical 'pulses', and this period gets smaller as time passes. You can get this file at: http://www.uni-jena.de/~pfk/Short_Block_Test.wav.gz.gz (1.6MB) (uncompress it twice with gzip) I used oggenc beta3 & mp+ 1.7.8 Oggenc gave 160kbps using mode -b 256 mp+ gave 350kbps (using
2000 Dec 23
1
Look what I found under the Xmas tree!
...uch of those got applied to the CVS tree. What's inside: Request for help! Look in os.h if you're using a compiler or processor I don't use (I use gcc on K5, K7, G3). New MDCT! Now we have two; competition is a good thing. Let's see which one is fastest :-) Completely overhauled psycha! Well, actually, the only big change is that it does all of its computations in the dB domain, and does some things just a little bit different, to improve performance. Changed the ATH_Bark_dB array. This removes some very annoying artifacts when encoding low-frequency, tonal sounds. MDCT_COOR: t...
2000 Dec 26
4
Thought for the new year
Some thoughts for the new year: 1) MDCT is good for image coding 2) image coding and audio coding are two very different things 3) combine 1 and 2 4) if a psycho model is good, after leaving out what it tells you you can without hurting quality, applying the same model should yield the same results as you got before 5) from 4: decode -> encode -> decode should result in (almost) the