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Table 6 PEAQ test scores for 32-kbps MP3 enhancement.

From: Quality Enhancement of Compressed Audio Based on Statistical Conversion

  Rock Symphony Electronic Jazz Flute Violin Bass Piano Harp Drums
32 kbps MP3 −3.5 −3.6 −3.4 −3.6 −3.6 −3.6 −3.4 −2.3 −2.4 −3.4
64 kbps MP3 −1.3 −1.8 −1.2 −1.5 −2.1 −1.5 −1.9 −1.2 −1.8 −1.6
Enhanced −1.2 −1.6 −1.4 −1.7 −2.0 −1.6 −2.0 −1.4 −1.8 −1.4
  1. ODG scores for the 32-kbps MP3 enhancement scenario. The range is from −4 ("very annoying") to 0 ("imperceptible"). The reference is always the uncompressed file.