http://www.uni-jena.de/~pfk/MPP/
- Downloads removed: New version available -
*replaygain: Some bugfixes (mostly file handling)
*replaygain: Report modes which suggest K setting report
*replaygain --listreport C:AUDIO D:AUDIO E:AUDIO
*Thumb profile decoders (mppdec, WinAMP, XMMS plugin):
-Level bug fixed (generated level was 2.5 dB too low for high frequency bands)
-Removed metallic sound from high frequency bands
Both were decoder issues!
Encoder
*New tool uses Perceptional Noise Substitution (PNS) for high frequency bands if this is less or not audible
*This tool is on for --thumb and --telephone.
*It can be set via --pns x, where x should be something between 0 and 0.2 for high quality and 0.5 and 2 for low quality settings.
*Bitstreams encoded with PNS can't be decodes by old decoders, newer decoder can decode it but sounds dull. Decoder from Thursday last week have a level error of 2.5 dB (too less) and a coloring problem. Decoder from today sounds okay.
*--pns 0.25 is useful for --radio profile if 110...130kbps is the target. This degrades sounds less than a reduced TMN oder NMT or a gained ATH.
*But this can't be decoded by Andree's Decoders, so I can't enable this as long as these versions are available. This is not to blame Andree, but to avoid confusion !!!!!
*All profiles are a little bit tuned for my ears.
Telephone:
-A little bit less in quality than the old thumb profile
Thumb:
-TMN increased from 4 dB to 10 dB
-Bandwidth increased from 9.5 kHz to 12.5 kHz
-CVS enabled
-PNS with threshold 1.0
-adaptive ATH enabled
-Tonality estimation for bass enhanced (formerly only in Xtreme+ profile)
Radio:
-ATH gained by 1 dB
-Tonality estimation for bass enhanced (formerly only in Xtreme+ profile)
Standard:
-TMN decreased by 1 dB °)
-NMT increased by 0.5 dB
-Tonality estimation for bass enhanced (formerly only in Xtreme+ profile)
Extreme:
-Tonality estimation for bass slighly modified (reduced for 0...20 Hz)
Insane:
-NMT increased by 1 dB
BrainDead:
-NMT increased by 1 dB
Note that a --tmn 20 actually generates a TNM of 23 dB for Andree's Encoder and a TMN of 26.5 dB for Klemm's Encoder for 3 kHz (23 dB and 29 dB for 120 Hz).
Note that PNS encoding is very early alpha, far from being usable as a normal tool. It was basicly a hack which works too good so I publish it. There is a rich source for improvements starting from false positive encoded (artefacts), false negative encoded (waste bitrate or quality on CBR), stereo imaging problems.