Device and method for supplying a reference audio signal to an acoustic processing unit
First Claim
1. Equipment comprising a first interface intended to be connected to a sound reproduction device and at least one second interface intended to be connected to at least one microphone, said equipment comprising an acoustic processing unit adapted for delivering an audio signal filtered by attenuation or suppression of a reference audio signal from an audio signal received via said second interface, wherein said equipment is configured for implementing an initialisation phase comprising:
- determining a propagation latency between an instant of transmission of a first audio signal via said interface and an instant of reception of a second audio signal via said second interface; and
configuring a buffer with a reading-triggering threshold defined according to said determined propagation latency,wherein said equipment is further configured for implementing a nominal operating phase comprising;
transmitting a third audio signal via said first interface, the reference signal used by the acoustic processing unit resulting from a passage of the third audio signal through said buffer.
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Accused Products
Abstract
Equipment includes a first interface intended to be connected to a sound reproduction device and at least one second interface intended to be connected to at least one microphone, an acoustic processing unit adapted for delivering an audio signal filtered by attenuation or suppression of a reference audio signal from an audio signal received via the second interface. In an initialisation phase, the equipment determines a propagation latency; configures a buffer with a reading-triggering threshold defined according to the determined propagation latency. In a nominal operating phase, the equipment transmits a third audio signal via the first interface, the third audio signal being the reference signal after passing through the buffer.
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Citations
9 Claims
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1. Equipment comprising a first interface intended to be connected to a sound reproduction device and at least one second interface intended to be connected to at least one microphone, said equipment comprising an acoustic processing unit adapted for delivering an audio signal filtered by attenuation or suppression of a reference audio signal from an audio signal received via said second interface, wherein said equipment is configured for implementing an initialisation phase comprising:
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determining a propagation latency between an instant of transmission of a first audio signal via said interface and an instant of reception of a second audio signal via said second interface; and configuring a buffer with a reading-triggering threshold defined according to said determined propagation latency, wherein said equipment is further configured for implementing a nominal operating phase comprising; transmitting a third audio signal via said first interface, the reference signal used by the acoustic processing unit resulting from a passage of the third audio signal through said buffer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method implemented by equipment comprising a first interface connected to a sound reproduction device and at least one second interface connected to at least one microphone, said equipment comprising an acoustic processing unit adapted for delivering an audio signal filtered by attenuation or suppression of a reference audio signal from an audio signal received via said second interface, wherein said method comprises an initialisation phase comprising:
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determining a propagation latency between an instant of transmitting a first audio signal via said first interface and an instant of reception of a second audio signal via said second interface; and configuring a buffer with a reading-triggering threshold defined according to said determined propagation latency, wherein the method further comprises a nominal operating phase comprising; transmitting a third audio signal via said first interface, the reference signal used by the acoustic processing unit resulting from a passage of the third audio signal through said buffer. - View Dependent Claims (9)
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Specification