Resumes
Resumes
David Baraff Phones & Addresses
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630 Llewelyn Rd, Berwyn, PA 19312 (610) 296-4709
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639 Llewelyn Rd, Berwyn, PA 19312
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Newtown Square, PA
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Paoli, PA
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630 Llewelyn Rd, Berwyn, PA 19312
Business Records
Name / Title
Company / Classification
Phones & Addresses
Owner
Ultravoice Limited
Surgical & Medical Instrument Mfg
Surgical & Medical Instrument Mfg
3612 Chapel Rd, Newtown Square, PA 19073
(610) 356-3690
(610) 356-3690
General Manager, Principal
Drb Technologies Inc
Commercial Physical Research
Commercial Physical Research
3612 Chapel Rd, Newtown Square, PA 19073
Limited Partner, General Manager
ULTRAVOICE LLP
Mfg Electronic Components Ret Misc Merchandise
Mfg Electronic Components Ret Misc Merchandise
90 S Newtown St Rd STE 14, Newtown Square, PA 19073
(610) 356-6443, (610) 356-0948, (610) 356-4481
(610) 356-6443, (610) 356-0948, (610) 356-4481
Principal
Stomafilter.Net, LLC
Nonclassifiable Establishments
Nonclassifiable Establishments
90 S Newtown St Rd, Newtown Square, PA 19073
Publications
Us Patents
Method And Means For Creating Prosody In Speech Regeneration For Laryngectomees
View pageUS Patent:
6795807, Sep 21, 2004
Filed:
Aug 17, 2000
Appl. No.:
09/641157
Inventors:
David R. Baraff - Berwyn PA, 19312
International Classification:
G10L 2106
US Classification:
704271, 704248, 704269
Abstract:
A device and a method to be used by laryngeally impaired people to improve the naturalness of their speech. An artificial sound creating mechanism which forms a simulated glottal pulse in the vocal tract is utilized. An artificial glottal pulse is compared with the natural spectrum and an inverse filter is generated to provide an output signal which would better reproduce natural sound. A digital signal processor introduces a variation of pitch based on an algorithm developed for this purpose; i. e. creating prosody. The algorithm uses primarily the relative amplitude of the speech signal and the rise and fall rates of the amplitude as a basis for setting the frequency of the speech. The invention also clarifies speech of laryngectomees by sensing the presence of consonants in the speech and appropriately amplifying them with respect to the vowel sounds.
Method And Means For Creating Prosody In Speech Regeneration For Laryngectomees
View pageUS Patent:
20050049856, Mar 3, 2005
Filed:
Sep 14, 2004
Appl. No.:
10/940183
Inventors:
David Baraff - Newtown Square PA, US
International Classification:
G10L019/04
US Classification:
704219000
Abstract:
A device and a method to be used by laryngeally impaired people to improve the naturalness of their speech. An artificial sound creating mechanism which forms a simulated glottal pulse in the vocal tract is utilized. An artificial glottal pulse is compared with the natural spectrum and an inverse filter is generated to provide an output signal which would better reproduce natural sound. A digital signal processor introduces a variation of pitch based on an algorithm developed for this purpose; i.e. creating prosody. The algorithm uses primarily the relative amplitude of the speech signal and the rise and fall rates of the amplitude as a basis for setting the frequency of the speech. The invention also clarifies speech of laryngectomees by sensing the presence of consonants in the speech and appropriately amplifying them with respect to the vowel sounds.
Artificial Larynx
View pageUS Patent:
53263499, Jul 5, 1994
Filed:
Jul 9, 1992
Appl. No.:
7/910217
Inventors:
David R. Baraff - Berwyn PA
International Classification:
A61F 220
A61C 1300
A61C 1300
US Classification:
623 9
Abstract:
An artificial larynx consists of (1) a first unit mounted in the mouth comprising a dental prosthesis, including a loud speaker, a power amplifier, a self-contained power source, plus a radio frequency receiver, and (2) a second unit held in the hand equipped with an input control device, self-contained power source, electronic circuitry and transmitter allowing the user to alter the frequency and volume produced by the unit in the mouth. The construction and components of the unit allows laryngectomees to speak with both a natural sound and a high degree of intelligibility. The unit preferably includes a system architecture including operational software which implements predetermined control of a fundamental repetition rate of voice pulses provided by the unit, to control the tonal quality of the sound, to include aspiration noise in the sound, to include pseudorandom variation of the fundamental repetition rate of the tonal pulse, includes diplophonic structure in such pulse and is able to simulate whispering.