In the image below, we see either two faces or a
candlestick--not both at the same time.
Figure 7:
Reverse optical illusion.
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Phantom words by Diana Deutsch (UCSD):
- what word is heard and does it change?
sound
Mysterious Melody by Diana Deutsch (UCSD):
- Can you identify a well-known melody with notes played in
different octaves?
scrambled
/
unscarambled
- This demonstrates use of previously acquired knowledge in
peception.
- Visual example: an ambiguous image may be interpreted in a
number of ways;
(see here).
- Once told it is a dalmation, shapes of identifiable
characteristics (ears, nose, tail etc.) begin to emerge to make it so.
- Audio example: shows importance of pitch (height) vs pitch class
in melody.
Two melodies may seem scrambled if not separated by some
feature (pitch height or timbre).
Figure 8:
Overlapped melodies may be
separated with timbre or register (pitch height).
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``Music 175: Auditory Streaming''
by Tamara Smyth,
Department of Music, University of California, San Diego (UCSD).
Download PDF version (stream175.pdf)
Download compressed PostScript version (stream175.ps.gz)
Download PDF `4 up' version (stream175_4up.pdf)
Download compressed PostScript `4 up' version (stream175_4up.ps.gz)
Copyright © 2019-05-21 by Tamara Smyth.
Please email errata, comments, and suggestions to Tamara Smyth<trsmyth@ucsd.edu>