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Coherence as an Indicator of Distortion for Wide-Band Audio Signals such as M-Noise and Music

EasyChair Preprint no. 1445

5 pagesDate: September 1, 2019


M-Noise is a new scientifically derived test signal whose crest factor as a function of frequency is modeled after real music. M-Noise should be used with a complementary procedure for determining a loudspeaker’s maximum linear SPL. The M-Noise Procedure contains criteria for the maximum allowable change in coherence as well as frequency response. When the loudspeaker and microphone are positioned as prescribed by the procedure, reductions in coherence are expected to be caused by distortion. Although higher precision methods for measuring distortion exist, coherence has the advantage that it can be calculated for wide-band signals such as M-Noise as well as music. Examples will demonstrate the perceived audio quality associated with different amounts of distortion-induced coherence loss.

Keyphrases: coherence, Crest factor, distortion, distortion generator, distortion induced coherence loss, loudspeaker, m noise procedure, M-Noise, Magnitude squared coherence, music, Test Signal, transfer function, wide-band signal

BibTeX entry
BibTeX does not have the right entry for preprints. This is a hack for producing the correct reference:
  author = {Merlijn van Veen and Roger Schwenke},
  title = {Coherence as an Indicator of Distortion for Wide-Band Audio Signals such as M-Noise and Music},
  howpublished = {EasyChair Preprint no. 1445},

  year = {EasyChair, 2019}}
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