US3614320A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stereophonic sound enhancement system with reverberation chamber
Assignee: RCA Licensing Corp
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Filing: 1968-12-13
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Granted: 1971-10-19
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Expires: 1988-12-13
Abstract
Abstract The reverberation characteristics of an auditorium or music hall are improved by picking up the sound originating in the auditorium with microphones, and reproducing the sound in a second room having a more optimal reverberation characteristic. A second set of microphones in the second room picks up the sound and its reverberations for transmission to a group of loudspeakers in the auditorium, where it is blended with the original sound.
Inventors
- 👤 John E Volkmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 11:40
CPC Classifications
H; H04; H04S; H04S3/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A sound enchancement system comprising: a primary chamber, a secondary chamber having selected physical dimensions such that the mean free path of sound in said secondary chamber is of the same order of magnitude as the mean free path of sound in said primary chamber, means for transmitting electrical signals representative of sound in said primary chamber to said secondary chamber and converting said electrical signals into sound, said means for transmitting electrical signals representative of sound in said primary chamber to said second chamber comprising a plurality of stereophonically related channels, and means for transmitting electrical signals representative of the sound along with its reverberations from said secondary chamber to said primary chamber and converting said electrical signals into sound, said means for transmitting electrical signals representative of said sound along with its reverberations from said secondary chamber to said primary chamber comprising a plurality of stereophonically related channels, thereby to enhance the acoustical characteristics of said primary chamber.
Claim 2
Dependent Claim
160 words
A sound enchancement system comprising: a primary chamber, a secondary chamber having selected physical dimensions such that the mean free path of sound in said secondary chamber is of the same order of magnitude as the mean free path of sound in said primary chamber, means for transmitting electrical signals representative of sound in said primary chamber to said secondary chamber and converting said electrical signals into sound, said means for transmitting electrical signals representative of sound in said primary chamber to said second chamber comprising a plurality of stereophonically related channels, and means for transmitting electrical signals representative of the sound along with its reverberations from said secondary chamber to said primary chamber and converting said electrical signals into sound, said means for transmitting electrical signals representative of said sound along with its reverberations from said secondary chamber to said primary chamber comprising a plurality of stereophonically related channels, thereby to enhance the acoustical characteristics of said primary chamber.
Claim 3
Dependent Claim
28 words
A sound enchancement system as defined in claim 1 wherein, said secondary chamber has a reverberation time which is longer than the reverberation time of said primary chamber.
Claim 4
Dependent Claim
54 words
A sound enchancement system as defined in claim 1 wherein, said means for transmitting electrical signals representative of said sound in said primary chamber to said secondary chamber further includes pickup means in said primary chamber located near to where the sound originates from so as to pick up a direct sound wave front.
Claim 5
Dependent Claim
198 words
A sound enchancement system comprising: a primary chamber; a secondary chamber, having a reverberation time longer than the reverberation time of said primary chamber and having selected physical dimensions such that the mean free path of sound in said secondary chamber is of the same order of magnitude as the means free path of sound in said primary chamber; first means for transmitting electrical signals representative of sound is said primary chamber to said secondary chamber comprising a plurality of stereophonically related channels and including pickup means, located in said primary chamber near to where the sound originates, for picking up a direct sound wave front, said first means further including reproducing means, located near wall in said secondary chamber corresponding in spatial array to the positioning of said pickup means in said primary chamber, for reproducing said sound-wave front of said primary chamber in said secondary chamber; and second means for transmitting electrical signals representative of the sound along with its reverberations from said secondary chamber to said primary chamber and convertIng said electrical signals into sound, thereby to enhance the acoustical characteristics of said primary chamber, said second means comprising a plurality of stereophonically related channels.
Claim 6
Dependent Claim
198 words
A sound enchancement system comprising: a primary chamber; a secondary chamber, having a reverberation time longer than the reverberation time of said primary chamber and having selected physical dimensions such that the mean free path of sound in said secondary chamber is of the same order of magnitude as the means free path of sound in said primary chamber; first means for transmitting electrical signals representative of sound is said primary chamber to said secondary chamber comprising a plurality of stereophonically related channels and including pickup means, located in said primary chamber near to where the sound originates, for picking up a direct sound wave front, said first means further including reproducing means, located near wall in said secondary chamber corresponding in spatial array to the positioning of said pickup means in said primary chamber, for reproducing said sound-wave front of said primary chamber in said secondary chamber; and second means for transmitting electrical signals representative of the sound along with its reverberations from said secondary chamber to said primary chamber and convertIng said electrical signals into sound, thereby to enhance the acoustical characteristics of said primary chamber, said second means comprising a plurality of stereophonically related channels.
Claim 7
Dependent Claim
54 words
A sound enchancement system as defined in claim 4 wherein, said means for transmitting electrical signals representative of said sound along with its reverberations from said secondary to said primary chamber further includes in said secondary chamber, pickup means located near walls other than from where said sound wave front is originally introduced therein.
Claim 8
Dependent Claim
51 words
A sound enhancement system as defined in claim 5 wherein, said means for transmitting electrical signals representative of said sound along with its reverberations from said secondary to said primary chamber further includes in said primary chamber reproducing means located near walls other than from where said sound wave front originates.
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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |