Patent US4649564A successfully refreshed from Google Patents.
US4649564A
Expired / Lapsed
US
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Acoustic systems
Assignee: Individual
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Filing: 1985-02-08
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Granted: 1987-03-10
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Expires: 2005-02-08
Abstract
Abstract An acoustic system comprising an input transducer connected by a first severable path to the input of reverberation means for producing reverberation of the required decay rate of the sound field perceived by the microphone, an output transducer connected by a second severable path to the output of the reverberation means, and detection means which analyzes the status of the sound field or any discrete frequency domain within the sound field and which operates both to connect the input transducer over the first path to the reverberation means and to secure connection of the reverberation means to the output transducer over the second path when the status of the sound field or the discrete frequency domain is analyzed by the detection means as either rising or constant and, conversely, both to sever the connection of the input transducer over the first path to the reverberation means and to connect the reverberation means to the output transducer over the second path when the status of the sound field or the discrete frequency domain is analyzed by the detection means as falling.
Inventors
- 👤 Peter W. Barnett
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:37
CPC Classifications
G; G10; G10K; G10K15/00; G10K15/08; G10K15/12; Y; Y10; Y10S; Y10S84/00; Y10S84/26
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
193 words
An acoustic sytem including at least one input transducer perceptive to a sound field, said input transducer connected by a first severable path to the input of reverberation means for producing reverberation having a predetermined decay rate for the sound field perceived by said input transducer at least one output transducer connected by a second severable path to the output of the reverberation means, and detection means which analyses the status of the sound field or any discrete frequency domain within the sound field and which operates both to connect the input transducer over the first path to the reverberation means and to sever connection of the reverberation means to the output transducer over the second path when the status of the sound field or the discrete frequency domain is analysed by the detection means as either rising or constant and, conversely, both to sever the connection of the input transducer over the first path to the reverberation means and to connect the reverberation means to the output transducer over the second path when the status of the sound field or the discrete frequency domain is analysed by the detection means as falling.
Claim 2
Dependent Claim
193 words
An acoustic sytem including at least one input transducer perceptive to a sound field, said input transducer connected by a first severable path to the input of reverberation means for producing reverberation having a predetermined decay rate for the sound field perceived by said input transducer at least one output transducer connected by a second severable path to the output of the reverberation means, and detection means which analyses the status of the sound field or any discrete frequency domain within the sound field and which operates both to connect the input transducer over the first path to the reverberation means and to sever connection of the reverberation means to the output transducer over the second path when the status of the sound field or the discrete frequency domain is analysed by the detection means as either rising or constant and, conversely, both to sever the connection of the input transducer over the first path to the reverberation means and to connect the reverberation means to the output transducer over the second path when the status of the sound field or the discrete frequency domain is analysed by the detection means as falling.
Claim 3
Dependent Claim
21 words
An acoustic system as claimed in claim 1, wherein amplifier means are incorporated in each of the first and second paths.
Claim 4
Dependent Claim
24 words
An acoustic system as claimed in either one of the preceding claims, wherein the detection means comprises an analogue-to-digital converter coupled to a microprocessor.
Claim 5
Dependent Claim
118 words
An acoustic system as claimed in claim 1, wherein the system includes a third at least partially severable path connecting the input transducer to the output transducer through another reverberation means and by-passing the first reverberation means, the detection means also operating to connect the input transducer over the third path to the output transducer when the status of the sound field or the discrete frequency domain is analysed by the detection means as either rising or constant and to at least partially sever the connection of the input transducer to the output transducer over the third path when the status of the sound field or the discrete frequency domain is analysed by the detection means as falling.
Claim 6
Dependent Claim
20 words
An acoustic system as claimed in claim 4, wherein the third path includes a sequence of buffer, equaliser and attenuator.
Claim 7
Dependent Claim
45 words
An acoustic system as claimed in claim 1, wherein said at least one input transducer comprises a plurality of input transducers and said at least one output transducer comprises a plurality of output transducers spaced at different locations throughout an auditorium fitted with the system.
Claim 8
Dependent Claim
19 words
An acoustic system as claimed in claim 6, wherein the input transducers are connected to a common first path.
Claim 9
Dependent Claim
16 words
An acoustic system as claimed in claim 7, wherein the common first path includes a mixer.
Claim 10
Dependent Claim
24 words
An acoustic system as claimed in any one of claims 6 to 8, wherein the output transducers are connected to a common second path.
Claim 11
Dependent Claim
16 words
An acoustic system as claimed in claim 9, wherein the common second path includes a mixer.
Claim 12
Dependent Claim
32 words
An acoustic system as claimed in claim 9, wherein the output transducers are arranged in groups of which the transducers in each group are in the same general location in the auditorium.
Claim 13
Dependent Claim
36 words
An acoustic system as claimed in claim 11, wherein the output transducers of each group are connected to the second path via an amplifier, delay means and a buffer common to the transducers of each group.
Claim 14
Dependent Claim
57 words
An acoustic system as claimed in any one of claims 6 to 8, wherein the system has both a plurality of input transducers and a plurality of output transducers and both the first and second paths each include a plurality of sequences of buffer, equaliser and attenuator each sequence perceiving and responding to a different frequency range.
Claim 15
Dependent Claim
52 words
An acoustic system as claimed in claim 9, wherein the system has both a plurality of input transducers and a plurality of output transducers and both the first and second paths each include a plurality of sequences of buffer, equaliser and attenuator each sequence perceiving and responding to a different frequency range.
Claim 16
Dependent Claim
52 words
An acoustic system as claimed in claim 10, wherein the system has both a plurality of input transducers and a plurality of output transducers and both the first and second paths each include a plurality of sequences of buffer, equalizer, and attenuator, each sequence perceiving and responding to a different frequency range.
Claim 17
Dependent Claim
52 words
An acoustic system as claimed in claim 11, wherein the system has both a plurality of input transducers and a plurality of output transducers and both the first and second paths each include a plurality of sequences of buffer, equalizer, and attenuator each sequence perceiving and responding to a different frequency range.
Claim 18
Dependent Claim
52 words
An acoustic system as claimed in claim 12, wherein the system has both a plurality of input transducers and a plurality of output transducers and both the first and second paths each include a plurality of sequences of buffer, equalizer, and attenuator, each sequence perceiving and responding to a different frequency range.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-03-09 | 1990-09-08 | 1991-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-09 | 1994-09-08 | 1995-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-09 | 1998-09-08 | 1999-03-10 | $7700.00 | Window Closed / Lapsed |