EP0357034A2
Expired / Lapsed
EP
⏱️ 0.0 years remaining
Audio signal processing system performing balance control in both amplitude and phase of audio signal
Assignee: NEC Corp
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Filing: 1989-08-30
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Granted: —
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Expires: 2009-08-30
Abstract
Abstract Disclosed therein is an audio signal processing system for performing a balance control, which includes an attenuator for performing an amplitude attenuation operation on the designated channel signal and a delay circuit coupled in series to the attenuator for performing a phase delay operation on the designatec channel signal. There is further provided a balance control unit which produces attenuation data and delay data in response to balance control information, the attenuation data and delay data being supplied to the attenuator and the delay circuit, respectively. Not only the amplitude but also phase of the designated channel signal are thereby attenuated and delayed.
Inventors
- 👤 Ryuji Ishida
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-06 13:37
CPC Classifications
H; H04; H04S; H04S7/00; H04S7/30; H04S7/302; H04R; H04R2499/00; H04R2499/10; H04R2499/13; H04S1/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
114 words
An audio signal processing system comprising attenuation means inserted in a signal path between a audio signal source and a speaker for performing an amplitude attenuation operation on an audio signal from said audio signal source in response to first data applied thereto, delay means inserted in said signal path in series to said attenuation means for performing a phase delay operation on the audio signal from said audio signal source in response to second data applied thereto, means responsive to balance control information for generating both of said first and second data, means for applying said first data to said attenuation means, and means for applying said second data to said delay means.
Claim 2
Dependent Claim
114 words
An audio signal processing system comprising attenuation means inserted in a signal path between a audio signal source and a speaker for performing an amplitude attenuation operation on an audio signal from said audio signal source in response to first data applied thereto, delay means inserted in said signal path in series to said attenuation means for performing a phase delay operation on the audio signal from said audio signal source in response to second data applied thereto, means responsive to balance control information for generating both of said first and second data, means for applying said first data to said attenuation means, and means for applying said second data to said delay means.
Claim 3
Dependent Claim
62 words
The system as claimed in claim 1, wherein said generating means includes a memory having a plurality of first memory locations each storing the first data and a plurality of second memory locations each storing the second data and memory access means responsive to said balance control information for accessing one of said first memory locations and one of said second locations.
Claim 4
Dependent Claim
27 words
The system as claimed in claim 2, wherein said attenuation means includes a multiplier for performing a multiplication operation on the audio signal and the first data.
Claim 5
Dependent Claim
43 words
The system as claimed in claim 2, wherein said delay means include storage means, data write means for writing the audio signal into said storage means, and data read means for reading the data from said storage means by use the second data.
Claim 6
Dependent Claim
81 words
A audio signal processing system for performing a balance control between first and second channels in response to balance control information, comprising means responsive to said balance control information for generating both of amplitude attenuation data and phase delay data, means responsive to said balance control data for performing an amplitude attenuation operation on a designated one of the first and second channels, and means responsive to said phase delay data for performing a phase delay operation on said designated channel.
Claim 7
Dependent Claim
81 words
A audio signal processing system for performing a balance control between first and second channels in response to balance control information, comprising means responsive to said balance control information for generating both of amplitude attenuation data and phase delay data, means responsive to said balance control data for performing an amplitude attenuation operation on a designated one of the first and second channels, and means responsive to said phase delay data for performing a phase delay operation on said designated channel.
Claim 8
Independent Claim
74 words
A system comprising means for generating a plurality of sound output signals, means for generating balance information between said sound output signals, means responsive to said balance information for generating both of amplitude control data and phase control data for a sound output signal to be controlled, and means responsive to said amplitude control data and phase control data for controlling an amplitude and a phase of the sound output signal to be controlled.
Claim 9
Independent Claim
74 words
A system comprising means for generating a plurality of sound output signals, means for generating balance information between said sound output signals, means responsive to said balance information for generating both of amplitude control data and phase control data for a sound output signal to be controlled, and means responsive to said amplitude control data and phase control data for controlling an amplitude and a phase of the sound output signal to be controlled.
References Cited (Backward Citations)
No citation records indexed.
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