A comparative study of transforms for use in digital audio data compression

B. E. Rulon, M. F. Shaw, K. D. Donohue

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


This paper provides a subjective quality analysis of transforms used in audio compression algorithms for a class of music signals. A 34-subject listener test compares three transforms in conjunction with an MPEG I layer 1 compression scheme. One test compares the performances of the discrete wavelet packet transform (DWPT) and the modified discrete cosine transform (MDCT) used in MPEG. Another test compares the performances of a DWPT eight- level nonuniform critical-band split and a DWPT five-level uniform subband split. Results indicate that the critical-band split provides significantly better quality than the uniform subband split for sounds with tonal and strong low-frequency content, while the DWPT outperforms the MDCT with significant improvement for nontonal sounds. (C) 2000 Acoustical Society of America.

Original languageEnglish
Pages (from-to)449-452
Number of pages4
JournalJournal of the Acoustical Society of America
Issue number1
StatePublished - 2000

ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics


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