Tone generator with directivity cues
United States Patent 3336432

Inventors:
Hyman, Hurvitz
Sts NW. H.
Publication Date:
08/15/1967
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Assignee:
Hyman, Hurvitz
Sts NW. H.
Primary Class:
Other Classes:
984/308, 84/661, 84/DIG.001, 84/699
International Classes:
G10H1/00
US Patent References:
3238304Stereophonic effect emphasizing system