Speech-Music Dichotic Chimeras
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    Dichotic chimeras are synthesized from pairs of dichotic sounds by independently processing the signals in each ear through a monaural chimerizer.  Here, the two input signals are (1) an utterance with a 700-ms interaural time difference (ITD) pointing to the right, and (2) an excerpt from "Take Five" by David Brubeck with a 700-ms ITD pointing to the left.  Chimeras synthesized with at least 8 bands are heard on the side which the fine structure points to, even though what is heard (speech vs. music) is based on the envelope.  Chimeras synthesized with fewer than 4-8 bands are hard to lateralize.  

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   Speech Envelope   Music Fine Structure

  Music Envelope  Speech Fine Structure

1   Frequency Band

1   Frequency Band

2   Frequency Bands

2   Frequency Bands

4   Frequency Bands

4   Frequency Bands

8   Frequency Bands

8   Frequency Bands

16  Frequency Bands

16  Frequency Bands

32  Frequency Bands

32  Frequency Bands