auditory demonstration tapes
Date1978
Inventory NumberWJ1238
ClassificationAudio Recording Tape
Subject
Maker
Laboratory of Psychophysics, Harvard University
name changed 1962
Cultural Region
Place of Origin
Dimensions23.6 x 25 x 3.1 cm (9 5/16 x 9 13/16 x 1 1/4 in.)
Material
Accessoriesblack plastic case, soft cover book, label
Description10 audio cassettes in a black plastic case, 1 soft cover book.
Each cassette is titled: AUDITORY DEMONSTRATIONS
Each side of a cassette is numbered as though it was a separate tape, with one pair of tapes per cassette (one each side). Their contents are described as following:
Side A: Tape 1: Critical Band (2:11)
Side B: Tape 2: Echoes (1:41)
Side A: Tape 3: Suppression (2:21)
Side B: Tape 4: Asymmetry of Masking (2:20)
Side A: Tape 5: Pitch Paradox (2:50)
Side B: Tape 6: Binaural Beats (3:00) Headphones Only
Side A: Tape 7: Temporal Integration (3:20)
Side B: Tape 8: Speech Transformation (3:43)
Side A: Tape 9: Sinusoidal Signals (4:17)
Side B: Tape 10: Fourier Analysis (4:44)
Side A: Tape 11: Masking Level Difference (4:50) Headphones Only
Side B: Tape 12: Distorsion (5.06)
Side A: Tape 13: Categorical Speech Perception (5:17)
Side B: Tape 14: Binaural Lateralization (4:42) Headphones Only
Side A: Tape 15: Effects of Filtering (5:41)
Side B: Tape 16: Periodicity Pitch (5.45)
Side A: Tape 17: Loudness (5:03)
Side B: Tape 18: Pulsation Threshold (6:44)
Side A: Tape 19: Beats and Combination Tones (6:45)
Side B: Tape 20: Nonsimultaneous Masking (6:58)
Each cassette is titled: AUDITORY DEMONSTRATIONS
Each side of a cassette is numbered as though it was a separate tape, with one pair of tapes per cassette (one each side). Their contents are described as following:
Side A: Tape 1: Critical Band (2:11)
Side B: Tape 2: Echoes (1:41)
Side A: Tape 3: Suppression (2:21)
Side B: Tape 4: Asymmetry of Masking (2:20)
Side A: Tape 5: Pitch Paradox (2:50)
Side B: Tape 6: Binaural Beats (3:00) Headphones Only
Side A: Tape 7: Temporal Integration (3:20)
Side B: Tape 8: Speech Transformation (3:43)
Side A: Tape 9: Sinusoidal Signals (4:17)
Side B: Tape 10: Fourier Analysis (4:44)
Side A: Tape 11: Masking Level Difference (4:50) Headphones Only
Side B: Tape 12: Distorsion (5.06)
Side A: Tape 13: Categorical Speech Perception (5:17)
Side B: Tape 14: Binaural Lateralization (4:42) Headphones Only
Side A: Tape 15: Effects of Filtering (5:41)
Side B: Tape 16: Periodicity Pitch (5.45)
Side A: Tape 17: Loudness (5:03)
Side B: Tape 18: Pulsation Threshold (6:44)
Side A: Tape 19: Beats and Combination Tones (6:45)
Side B: Tape 20: Nonsimultaneous Masking (6:58)
Signedbooklet cover: AUDITORY DEONSTRATION TAPES / Prepared December 15, 1978, / at the Laboratory of Psychophysics, Harvard University / under National Science Foundation Grant SED76-24215;
on eack tape: Laboratory of Psychophysics / HARVARD UNIVERSITY
Curatorial RemarksThese sound samples were probably copied from originals in an earlier form of phonographic tape, hence the pairing of two "tapes" per cassette.
FunctionThese are samples of several acoustic effects, some are real physical effects, while others are only perceptual illusions.
ProvenanceRichard Kaufman, Psychology Research Library, William James Hall, not sure of the date we actually received the set.
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Accessories: see Description for itemized list
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Accessories: see Description for itemized list
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