US4010335A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Microphone apparatus
Assignee: Sony Corp
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Filing: 1975-10-24
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Granted: 1977-03-01
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Expires: 1995-10-24
Abstract
Abstract A microphone assembly or apparatus comprises a perforated capsule having a microphone unit supported therein and a tubular projection communicating with the interior of the capsule. The projection is arranged to be inserted into the auditory canal of a human or dummy head. The microphone unit is located near the opening of the auditory canal.
Inventors
- 👤 Hiroshi Yasuda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:57
CPC Classifications
H; H04; H04R; H04R5/00; H04R5/027; H04R1/00; H04R1/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
84 words
A microphone assembly comprising: a. a housing consisting of a capsule and a projection extending from said capsule; b. a cavity formed in said capsule; c. a plurality of apertures bored through said capsule; d. a microphone unit supported in said capsule, and being positioned in said cavity so as to communicate with the outside of said housing through said apertures; and e. said projection being arranged to be inserted into the auditory canal and having a bore therethrough which communicates with said cavity.
Claim 2
Dependent Claim
84 words
A microphone assembly comprising: a. a housing consisting of a capsule and a projection extending from said capsule; b. a cavity formed in said capsule; c. a plurality of apertures bored through said capsule; d. a microphone unit supported in said capsule, and being positioned in said cavity so as to communicate with the outside of said housing through said apertures; and e. said projection being arranged to be inserted into the auditory canal and having a bore therethrough which communicates with said cavity.
Claim 3
Dependent Claim
14 words
A microphone assembly as claimed in claim 1, wherein said capsule is a windscreen.
Claim 4
Dependent Claim
47 words
A microphone assembly as claimed in claim 1, further including an amplifier having an active element for amplifying an output of said microphone unit, and wherein said amplifier includes a frequency characteristic compensating circuit for leveling the frequency characteristic of an output signal from said microphone unit.
Claim 5
Dependent Claim
27 words
A microphone assembly as claimed in claim 3, wherein said frequency characteristic compensating circuit is connected to said active element and includes at least two trap circuits.
Claim 6
Dependent Claim
39 words
A microphone assembly as claimed in claim 4, in which said two trap circuits are two series resonant circuits, one of said resonant circuits being resonant at approximately 3 KHz, and the other being resonant at approximately 8 KHz.
Claim 7
Dependent Claim
82 words
A microphone assembly comprising: a. a housing consisting a larger diameter portion and a smaller diameter portion extended from said larger diameter portion and being arranged to be inserted into the auditory canal; b. a cavity formed in said larger diameter portion; c. a plurality of apertures bored through said larger diameter portion; d. a microphone unit attached to said housing to be positioned in said cavity; and e. a bore formed in said smaller diameter portion and communicating with said cavity.
Claim 8
Dependent Claim
82 words
A microphone assembly comprising: a. a housing consisting a larger diameter portion and a smaller diameter portion extended from said larger diameter portion and being arranged to be inserted into the auditory canal; b. a cavity formed in said larger diameter portion; c. a plurality of apertures bored through said larger diameter portion; d. a microphone unit attached to said housing to be positioned in said cavity; and e. a bore formed in said smaller diameter portion and communicating with said cavity.
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) | 1980-02-29 | 1980-08-30 | 1981-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-02-29 | 1984-08-30 | 1985-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-02-29 | 1988-08-30 | 1989-03-01 | $7700.00 | Window Closed / Lapsed |