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48:, Blackmer worked on extending the frequency response of audio electronics beyond the conventionally accepted audible range of 20 kHz. He also published research on the value of ultrasonic frequencies in sound reproduction, claiming that the time resolution of human hearing is 5 microseconds or better—which would correspond to a frequency of 200 kHz, requiring audio equipment ideally to have a flat response to that frequency.
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in 1979 and staying on with the company for several years. In the late 1980s he formed
Earthworks, producing studio
33:(January 11, 1927 – March 21, 2002) was an American audio electronics engineer, most famous as the inventor of the
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Video
Interview: David Blackmer on "Perceptual Perfection"
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158:A partial list of patents held by David Blackmer
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150:from 1976. He was also a great reader of
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220:Encyclopedia of Recorded Sound, Volume 1
107:. He founded dbx in 1971, selling it to
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85:Trans-Radio Recording Studio
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133:Instrumentation Laboratory
35:DBX noise reduction system
508:Harvard University alumni
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371:Harman Connected Services
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271:Earthworks Audio Products
148:Audio Engineering Society
135:, as well as running the
67:in the 1940s and studied
59:. He started in audio at
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266:Stereophile.com obituary
233:Blackmer, David (1999).
154:. He had ten children.
27:American audio engineer
462:James Bullough Lansing
513:Waldorf school alumni
341:A&R Cambridge Ltd
197:U.S. patent 6,526,149
189:U.S. patent 6,091,829
181:U.S. patent 4,403,199
173:U.S. patent 3,714,462
165:U.S. patent 3,681,618
119:and studio reference
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83:. He later worked at
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46:audio noise reduction
317:Harman International
218:Hoffman, F. (2004),
146:and a fellow of the
99:, where he designed
18:Earthworks (company)
401:Martin Professional
361:Crown International
327:Samsung Electronics
123:. He also founded
77:Harvard University
53:High Mowing School
51:Blackmer attended
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31:David E. Blackmer
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391:Lexicon
247:June 1,
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406:Revel
238:(PDF)
127:(now
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249:2014
144:IEEE
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