AfterDawn: Tech news

64kbps audio public listening test

Written by Lasse Penttinen @ 11 Sep 2003 8:57

64kbps audio public listening test RareWares has launched yet another public audio listening test. This time the test concentrates on low bitrate audio compression at 64kbps bit streams. One interesting feature of the test is that the 64kbps files are challenged by LAME MP3 at 128kbps. The reason for this are the marketing slogans (MP3Pro, WMA) that promise "MP3 quality at half the bitrate".
The encoders tested and parameters used:
  • Ahead/Nero HE AAC VBR profile Streaming :: Medium, high quality
  • Ogg Vorbis post-1.0 CVS -q 0
  • MP3pro (from Adobe Audition 1.0) VBR quality 40, Current Codec, allow M/S and IS, allow narrowing, no CRC
  • Real Audio Gecko (from Real Producer 9.0.1 64kbps
  • Windows Media Audio v9 VBR quality 50
  • QuickTime 6.3 AAC LC 64kbps, Best Quality
  • Lame MP3 encoder 3.90.3 --alt-preset 128 --scale 1. high anchor
  • FhG MP3 encoder (from Adobe Audition 1.0) 64kbps CBR, Current codec, allow M/S, no I/S, allow narrowing, no CRC. bottom anchor

  • Take the test!

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