Patent US5123052A successfully refreshed from Google Patents.
US5123052A
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Method and apparatus for reducing the attenuation and phase shift of low frequency components of audio signals
Assignee: BRISSON BRUCE A
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Filing: 1990-02-01
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Granted: 1992-06-16
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Expires: 2010-02-01
Abstract
Abstract In an audio signal transmission system having a source of audio signals and a load coupled thereto by means of a first and second transmission line, a discrete capacitor is coupled in parallel with one or both of the transmission lines. The magnitude of the capacitor is as large as stable operation of the amplifier to which it is connected will permit.
Inventors
- 👤 Bruce A. Brisson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:28
CPC Classifications
H; H04; H04B; H04B3/00; H04B3/02; H04B3/04; H04B3/14
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
106 words
An audio frequency signal transmission line having an input impedance for transmitting audio frequency signals from a source of audio signals to a load comprising: a first and second continuous electrical conductor having no discrete resistive, capacitive or inductive components located between the ends thereof; and means for providing a capacitance coupled in parallel with at least one of said conductors such that a first and a second node at which the input impedance of said line changes from being an inductive impedance to a capacitive impedance and from a capacitive impedance to an inductive impedance, respectively, are located substantially outside of the audio frequency spectrum.
Claim 2
Dependent Claim
106 words
An audio frequency signal transmission line having an input impedance for transmitting audio frequency signals from a source of audio signals to a load comprising: a first and second continuous electrical conductor having no discrete resistive, capacitive or inductive components located between the ends thereof; and means for providing a capacitance coupled in parallel with at least one of said conductors such that a first and a second node at which the input impedance of said line changes from being an inductive impedance to a capacitive impedance and from a capacitive impedance to an inductive impedance, respectively, are located substantially outside of the audio frequency spectrum.
Claim 3
Dependent Claim
21 words
An audio frequency signal transmission line according to claim 1 wherein said means for providing a capacitance comprises a discrete capacitor.
Claim 4
Dependent Claim
22 words
An audio frequency signal transmission line according to claim 2 wherein said discrete capacitor has a capacitance in excess of 0.1 μF.
Claim 5
Dependent Claim
73 words
An audio frequency signal transmission line according to claim 1 wherein said capacitance providing means comprises means for providing a capacitance coupled in parallel with each of said first and said second conductors such that the node at which the input impedance of said line changes from being an inductive impedance to a capacitive impedance and from a capacitive impedance to an inductive impedance is located substantially outside of the audio frequency spectrum.
Claim 6
Dependent Claim
47 words
An audio frequency signal transmission line according to claim 4 wherein means for providing a capacitance coupled in parallel with each of said first and said second conductors comprises a first and a second discrete capacitor coupled in parallel with said first and said second conductors, respectively.
Claim 7
Independent Claim
113 words
A method of making an audio frequency signal transmission line having an input impedance for transmitting audio signals from a source of said audio signals to a load comprising the steps of: providing a first and a second continuous electrical conductor having no discrete resistive, capacitive or inductive components located between the ends thereof; and providing a capacitance coupled in parallel with at least one of said conductors such that a first and a second node at which the input impedance of said line changes from being an inductive impedance to a capacitive impedance and from a capacitive impedance to an inductive impedance, respectively, are located substantially outside of the audio frequency spectrum.
Claim 8
Independent Claim
113 words
A method of making an audio frequency signal transmission line having an input impedance for transmitting audio signals from a source of said audio signals to a load comprising the steps of: providing a first and a second continuous electrical conductor having no discrete resistive, capacitive or inductive components located between the ends thereof; and providing a capacitance coupled in parallel with at least one of said conductors such that a first and a second node at which the input impedance of said line changes from being an inductive impedance to a capacitive impedance and from a capacitive impedance to an inductive impedance, respectively, are located substantially outside of the audio frequency spectrum.
Claim 9
Dependent Claim
21 words
A method according to claim 6 wherein said step of providing a capacitance comprises the step of providing a discrete capacitor.
Claim 10
Dependent Claim
18 words
A method according to claim 7 wherein said discrete capacitor has a capacitance in excess of 0.1 μF.
Claim 11
Dependent Claim
40 words
A method according to claim 6 wherein said step of providing a capacitance coupled in parallel with at least one of said conductors comprises the step of providing said capacitance in parallel with both said first and said second conductors.
Claim 12
Dependent Claim
45 words
A method according to claim 9 wherein said step of providing said capacitance in parallel with both said first and said second conductors comprises the step of providing a first and a second discrete capacitor in parallel with said first and said second conductors, respectively.
References Cited (Backward Citations)
US3849602A
Cited
US3838215A
Cited
US4031318A
Cited
US4282402A
Cited
GB2068680A
Cited
US4475233A
Cited
US4653096A
Cited
US4593405A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-06-16 | 1995-12-16 | 1996-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-06-16 | 1999-12-16 | 2000-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-06-16 | 2003-12-16 | 2004-06-16 | $7700.00 | Window Closed / Lapsed |