Time to Frequency Mapping Part I: The PQMF

  • Marina Bosi
  • Richard E. Goldberg
Part of the The Springer International Series in Engineering and Computer Science book series (SECS, volume 721)


In this and the following chapter, we discuss common techniques used in mapping audio signals from the time domain into the frequency domain. The basic idea is that we can often reduce the redundancy in an audio signal by subdividing its content into its frequency components and then appropriately allocating the bit pool available. Highly tonal signals have frequency components that are slowly changing in time. The data necessary to fully describe these signals can be significantly less than that involved in directly describing the signal’s shape as time passes.


Filter Bank Audio Signal Perfect Reconstruction Prototype Filter Synthesis Filter 
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Copyright information

© Springer Science+Business Media New York 2003

Authors and Affiliations

  • Marina Bosi
    • 1
  • Richard E. Goldberg
    • 2
  1. 1.Stanford UniversityUSA
  2. 2.The Brattle GroupUSA

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