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mp3HD TECHNOLOGY
mp3HD Overview

  • mp3HD is a lossless audio codec (100% bit-exact replica of CD tracks)
  • Backward Compatible to mp3
  • File extension .mp3
  • Bitrates for music approximately 500 to 900 kbps rates (similar to other lossless codecs), depending on genre
  • Embedded mp3 track and the mp3HD file share the same id3 metadata
  • Encoding parameters (e.g. bit rate), ancillary data and meta data of embedded mp3 track are under control


The following tools are available immediately for your tests:

  • Encoding
    • Command-line encoder
  • Decoding (to wav)
    • Command-line decoder
  • Playing
  • Platforms
    • Win32 (Microsoft Windows XP, 2000, NT 4, Me/98), Vista
    • Linux32
    • Mac OS X
  • Support
    • CD audio (PCM): 44.1, 48 kHz sampling rate, 16 bit/sample
  • Software Downloads Page


mp3HD Compression

  • Large test set with four genres:


Genre Average mp3HD bit rate Average 4 minute mp3HD file size
Pop, Rock, Folk 876 kbit/s 26 MB
Jazz 786 kbit/s 23.5 MB
Classical 605 kbit/s 18 MB
Audio books 474 kbit/s 14 MB


Note 1: Similar trend across genres holds for all lossless audio codecs

Note 2: Uncompressed bit rate: 1411 kbps

  •  mp3
  • mp3HD
  •  mp3 Surround
  •  mp3D
  •  mp3SX