US4139730A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of testing human auditory responses
Assignee: Individual
•
Filing: 1977-08-10
•
Granted: 1979-02-13
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Expires: 1997-08-10
Abstract
Abstract An audiometric testing technique uses filtered speech bands which are attenuated and presented to a subject at different intensity levels. By producing a plurality of frequency bands of the speech pattern at different frequencies and presenting each of the frequency bands at a different intensity level, an audiogram is obtained.
Inventors
- 👤 Barbara Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:03
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
110 words
Method of testing for auditory response, especially useful in testing infants and hard-to-test subjects comprising the steps of: a. generating a speech pattern b. filtering said speech pattern to produce a plurality of limited-frequency bands of said speech pattern so that each said band is centered at a unique selected frequency different from the frequencies at which the other bands are centered, each selected frequency being fixed, once selected, and each said band having approximately equal accoustic energy, c. presenting said limited frequency bands, sequentially, at different intensity levels to a subject, and d. identifying the threshhold level of hearing said speech pattern for each of of limited frequency bands.
Claim 2
Dependent Claim
110 words
Method of testing for auditory response, especially useful in testing infants and hard-to-test subjects comprising the steps of: a. generating a speech pattern b. filtering said speech pattern to produce a plurality of limited-frequency bands of said speech pattern so that each said band is centered at a unique selected frequency different from the frequencies at which the other bands are centered, each selected frequency being fixed, once selected, and each said band having approximately equal accoustic energy, c. presenting said limited frequency bands, sequentially, at different intensity levels to a subject, and d. identifying the threshhold level of hearing said speech pattern for each of of limited frequency bands.
Claim 3
Dependent Claim
45 words
A method of testing for auditory response as defined by claim 1 wherein said frequency bands are defined by the following center frequencies and band widths: ______________________________________
Center Frequency Band Width
______________________________________
250 Hz 125-375 Hz
500 250-750
1000 750-1500
2000 1500-2500
4000 3000-5000
______________________________________
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-12 | 1982-08-14 | 1983-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-12 | 1986-08-14 | 1987-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-12 | 1990-08-14 | 1991-02-13 | $7700.00 | Window Closed / Lapsed |