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US6731769B1 - Upper audio range hearing apparatus and ...
https://patents.google.com/patent/US6731769B1/en#:~:text=A%20system%20and%20method%20upper%20auditory%20frequency%20range,received%20in%20an%20inner%20ear%20of%20the%20user.
US6731769B1 - Upper audio range hearing apparatus and ...
https://patents.google.com/patent/US6731769B1/en
A system and method upper auditory frequency range hearing. A speech signal is filtered, and then modulated to an upper auditory frequency range. …
Patents Assigned to Sound Techniques Systems, LLC - Justia ...
https://patents.justia.com/assignee/sound-techniques-systems-llc
Patents Assigned to Sound Techniques Systems, LLC. Upper audio range hearing apparatus and method. Patent number: 6731769. Abstract: A system and method upper auditory frequency range hearing. A speech signal is filtered, and then modulated to an upper auditory frequency range. The modulated signal is then provided to a transducer, which causes a …
US2217394A - Method and apparatus for testing hearing ...
https://patents.google.com/patent/US2217394A/en
The method of testing hearing, comprising producing a backgroundsound which, in its effect on the ear, apparently covers substantially the entire range of audible frequencies simultaneously,...
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