Projects / Bonk


Bonk is an audio compression program that can operate in either lossy or lossless mode. In lossy mode, it achieves around 14:1 compression while remaining perceptually lossless; equivalent to around 95 kbps for CD quality stereo. In lossless mode, which allows exact recovery of the original audio file, the compression ratio is typically around 2:1. The compressed files are stored in a new format based on speech compression techniques. Compressed files can then be converted back to an uncompressed format or played back in real time.

Operating Systems

Recent releases

  •  21 Jul 2002 16:37

    Release Notes: Support for BSD variants was added. The bitrate for tonal sounds now automatically increases. The code now compiles with gcc 3.1.

    •  10 May 2001 06:48

      Release Notes: This release removes a clipping problem, features a more elegant (and faster) encoding algorithm, slightly improves decoding speed, and is now endian safe for playback (ie. can now playback on PowerPCs).

      •  30 Apr 2001 05:35

        Release Notes: This release features reducing of the default quantization level, better reproduction of high frequencies, a better speech compression mode, options to specify the output file, and artist name and track title setting.

        •  22 Apr 2001 07:53

          Release Notes: The warbling artifact that appeared for recordings containing very pure tones has been removed.

          •  21 Apr 2001 02:25

            No changes have been submitted for this release.


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