GenieSys Releases Free Compression Software

May 12, 2002

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GenieSys Voice has released AudioCollapse RatHole v3.1 for free. The software can be used for lossless compression of audio files containing audio data in PCM 8, 16, 24 bit or IEEE_FLOAT 32 bit data format. A new GenieSys algorithm makes it possible to reduce the size of packed audio data and then unpack exactly the same bits, with no differences to the original data. The AudioCollapse algorithm compresses audio data, considering the bit depth of the digital data contained in the audio file (8/16/24/32 bps). The algorithm can be used on:

Audio files - WAV, AU, AIFF, SND, Ensoniq Paris PAS
Sampler banks:

AVM Apex bank file APEX
Aureal sound bank ARL
Creative Labs/E-mu System SoundFont banks format 1&2.x SBK, SF2
DownLoadable sounds level 1&2 DLS
Ensoniq EPS Files EFE, Ensoniq Instruments family files INS, Ensoniq Disk Image GKH
Gravis Ultrasound /Forte Patch PAT
Kurzweil 2000-2600 files KRZ
Nemesys/Tascam GIG
Seer Systems Reality banks SEERBANKSET
Turtle Beach WaveFront Bank WFB
Virtual Sampler bank VSB

Multi track audio Cakewalk/Sonar BUN, CWB
Impulse Tracker instrument ITI, Fast Tracker 2 instrument XI

RatHole can also be used as the common archiving utility for archiving any other types of files.

The compression ratio of AudioCollapse method depends on the size of audio data, the balance between the tone and noise component of audio signal, bit depth and other factors, varying from 36% to 78%. The higher the bit depth and the fidelity of audio data, the better is the compression ratio.

GenieSys Voice is using the technology to deliver their own SF2 banks up to 97MB size (after AudioCollapse - 25 MB) and GIGA banks up to 80MB (after AudioCollapse - 18 MB).

Free for non-commercial purposes.

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