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Related Experiment Videos

Speech versus nonspeech in pitch memory

C Semal1, L Demany, K Ueda

  • 1Laboratoire d'Audiologie Expérimentale et Clinique, Université Bordeaux 2, France.

The Journal of the Acoustical Society of America
|August 1, 1996
PubMed
Summary
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Auditory short-term memory for pitch is not affected by whether intervening sounds are speech or tones. Pitch discrimination performance depends more on the pitch distance between sounds than their type.

Area of Science:

  • Auditory perception
  • Cognitive psychology
  • Psychoacoustics

Background:

  • Intervening sounds can degrade memory traces of pitch.
  • Previous research suggested speech sounds cause less pitch degradation than tones.
  • Prior studies lacked control over pitch relations between standard and intervening sounds.

Purpose of the Study:

  • To investigate if speech and nonspeech sounds differentially affect auditory short-term memory for pitch.
  • To examine the role of pitch distance in auditory memory performance.
  • To test if pitch information from speech is stored differently than from nonspeech.

Main Methods:

  • Experiment 1: Participants compared standard tones with later tones, with intervening speech or nonspeech sounds matched for pitch.

Related Experiment Videos

  • Variable pitch distances (delta-pitch) were used between standard and comparison sounds.
  • Experiment 2: Similar paradigm but with spoken words as standard and comparison sounds, detecting fundamental frequency shifts.

    • Main Results:

    • Pitch discrimination was significantly affected by delta-pitch, regardless of intervening sound type (speech vs. tones).
    • Performance improved with larger delta-pitch for both speech and nonspeech intervening sounds.
    • In Experiment 2, the type of intervening sound (words vs. tones) had no significant effect on pitch discrimination.

    Conclusions:

    • Auditory short-term memory for pitch does not differentiate between speech and nonspeech sounds.
    • Pitch memory degradation is primarily influenced by the pitch interval between sounds, not their category.
    • The storage of pitch information in auditory short-term memory is modality-independent.