Noise dependent signal processing for in-car communication systems with multiple acoustic zones
First Claim
1. An ICC system for a passenger compartment having acoustic zones, comprising:
- a speaker dedicated module to receive first signals from a first microphone in a first one of the acoustic zones, wherein the first signals correspond to speech from a first user in the first one of the acoustic zones, wherein the first module is configured to maximize the speech from the first user and minimize signals not generated by the speech from the first user, wherein the speaker dedicated module is further configured to compensate for the Lombard effect based upon a target peak level for the speech from the first user corresponding to a level of background noise in the first one of the acoustic zones; and
a listener specific module to optimize a first output signal, which comprises the speech from the first user, for a first loudspeaker in a second one of the acoustic zones including adjusting a volume of sound from the first loudspeaker based upon a noise estimate for the second one of the acoustic zones.
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Accused Products
Abstract
A speech communication system includes a speech service compartment for holding one or more system users. The speech service compartment includes a plurality of acoustic zones having varying acoustic environments. At least one input microphone is located within the speech service compartment, for developing microphone input signals from the one or more system users. At least one loudspeaker is located within the service compartment. An in-car communication (ICC) system receives and processes the microphone input signals, forming loudspeaker output signals that are provided to one or more of the at least one output loudspeakers. The ICC system includes at least one of a speaker dedicated signal processing module and a listener specific signal processing module, that controls the processing of the microphone input signal and/or forming of the loudspeaker output signal based, at least in part, on at least one of an associated acoustic environment(s) and resulting psychoacoustic effect(s).
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Citations
16 Claims
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1. An ICC system for a passenger compartment having acoustic zones, comprising:
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a speaker dedicated module to receive first signals from a first microphone in a first one of the acoustic zones, wherein the first signals correspond to speech from a first user in the first one of the acoustic zones, wherein the first module is configured to maximize the speech from the first user and minimize signals not generated by the speech from the first user, wherein the speaker dedicated module is further configured to compensate for the Lombard effect based upon a target peak level for the speech from the first user corresponding to a level of background noise in the first one of the acoustic zones; and a listener specific module to optimize a first output signal, which comprises the speech from the first user, for a first loudspeaker in a second one of the acoustic zones including adjusting a volume of sound from the first loudspeaker based upon a noise estimate for the second one of the acoustic zones. - View Dependent Claims (2, 3, 4)
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5. A computer-implemented method using one or more computer processes for an ICC system for a passenger compartment having acoustic zones, the method comprising:
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receiving at a speaker dedicated module first signals from a first microphone in a first one of the acoustic zones, wherein the first signals correspond to speech from a first user in the first one of the acoustic zones; maximizing the speech from the first user and minimizing signals not generated by the speech from the first user; compensating for the Lombard effect based upon a target peak level for the speech from the first user corresponding to a level of background noise in the first one of the acoustic zones; and optimizing, at a listener specific module, a first output signal, which comprises the speech from the first user, for a first loudspeaker in a second one of the acoustic zones including adjusting a volume of sound from the first loudspeaker based upon a noise estimate for the second one of the acoustic zones. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A computer program product encoded in a non-transitory computer-readable medium for speech communication, the product comprising:
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program code for receiving at a speaker dedicated module first signals from a first microphone in a first one of the acoustic zones, wherein the first signals correspond to speech from a first user in the first one of the acoustic zones; maximizing the speech from the first user and minimizing signals not generated by the speech from the first user; compensating for the Lombard effect based upon a target peak level for the speech from the first user corresponding to a level of background noise in the first one of the acoustic zones; and optimizing, at a listener specific module, a first output signal, which comprises the speech from the first user, for a first loudspeaker in a second one of the acoustic zones including adjusting a volume of sound from the first loudspeaker based upon a noise estimate for the second one of the acoustic zones.
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Specification