Understanding and using otoacoustic emissions
by David T. Kemp.
http://www.book4doc.com/14489
Publisher: Otodynamics Ltd
Otoacoustic emission is a surprising and exciting auditory phenomenon which allows us to explore peripheral hearing function in unprecedented depth and detail. OAEs have given us new insights into deafness and new possibilities
for early intervention and treatment.
People often ask what prompted the first OAE measurement. It was to explain a set of complex and little known psychoacoustic phenomena. Spontaneous subjective pure tones had been cited by Gold in 1948 as potential evidence for a cochlear amplifier. Anomolous aural combination tone generation had been reported by Ward in 1952 involving mysterious internal tones. Finally in 1958 Elliot reported a periodic ripple pattern in the fine structure of the auditory threshold in normal ears. All three were systematically linked together but no rational explanation could be found . Only
one physical model seemed to fit the facts. It was that near to threshold levels the healthy cochlea behaved like a reverberating and resonating auditorium enhanced by a strange PA system prone to feedback howl and distortion! It was an incredibly long shot but in June of 1977 I put a microphone into my ear canal just to check.
Through the microphone came distortion products, spontaneous tones and echoes!
The incredible turned out to be true!
Based on the OAE Course held annually at The Institute of Laryngology & Otology University College London
David T Kemp 1997
ISBN: 1901739007
PDF 12 pages (Brochure)
http://www.book4doc.com/86982
by David T. Kemp.
http://www.book4doc.com/14489
Publisher: Otodynamics Ltd
Otoacoustic emission is a surprising and exciting auditory phenomenon which allows us to explore peripheral hearing function in unprecedented depth and detail. OAEs have given us new insights into deafness and new possibilities
for early intervention and treatment.
People often ask what prompted the first OAE measurement. It was to explain a set of complex and little known psychoacoustic phenomena. Spontaneous subjective pure tones had been cited by Gold in 1948 as potential evidence for a cochlear amplifier. Anomolous aural combination tone generation had been reported by Ward in 1952 involving mysterious internal tones. Finally in 1958 Elliot reported a periodic ripple pattern in the fine structure of the auditory threshold in normal ears. All three were systematically linked together but no rational explanation could be found . Only
one physical model seemed to fit the facts. It was that near to threshold levels the healthy cochlea behaved like a reverberating and resonating auditorium enhanced by a strange PA system prone to feedback howl and distortion! It was an incredibly long shot but in June of 1977 I put a microphone into my ear canal just to check.
Through the microphone came distortion products, spontaneous tones and echoes!
The incredible turned out to be true!
Based on the OAE Course held annually at The Institute of Laryngology & Otology University College London
David T Kemp 1997
ISBN: 1901739007
PDF 12 pages (Brochure)
http://www.book4doc.com/86982
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