Adaptive dynamic range control
AssigneeMarshall Group AB (Publ)
InventorsAnders Edgren, Hao Liu, Nicolas Pignier Delafontaine
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Abstract
A method of controlling signal dynamics of audio data (sin) for playback by an audio playback device is presented. The method comprising receiving audio data (sin) for playback by the audio playback device and obtaining, by one or more sensor circuits (310), ambient input data (sa) indicative of a state of an environment of the audio playback device. The method further comprises controlling at least one DRC control parameter (115) of a dynamic range controller, DRC, (100) based on the ambient input data (sa), processing the audio data (sin) by the DRC (100) to provide processed audio data (sout), and providing the processed audio data (sout) for playback by the audio play-back device.
Claims24
A method of controlling signal dynamics of audio data for playback by an audio playback device, the method comprising:
- receiving audio data for playback by the audio playback device;
- obtaining, by one or more sensor circuits, ambient input data indicative of a state of an environment of the audio playback device;
- controlling at least one DRC control parameter of a dynamic range controller based on the ambient input data;
- processing the audio data by the DRC to provide processed audio data;
- and
- providing the processed audio data for playback by the audio playback device.
-23. (canceled)
A processor circuit, operatively coupled to:
- a communications circuit of an audio playback device;
- a transducer circuit of the audio playback device;
- a DRC circuit of the audio playback device;
- and
- at least one sensor circuit;
- wherein the processor circuit is configured to cause:
- reception, by the communications circuit, of audio data for sounding by the transducer circuit;
- obtainment, by one or more sensor circuits;
- ambient input data indicative of a state of an environment of the audio playback device;
- controlling of a DRC control parameter of the DRC circuit based on the ambient input data;
- processing of the audio data by the DRC to provide processed audio data;
- and
- provisioning of the processed audio data for sounding by the transducer circuit.
An audio playback device for playback of audio data, the audio playback device comprising:
- at least one sensor circuit positioned to sense ambient input data indicative of a state of an environment of the audio playback device;
- and
- a dynamic range controller (DRC) circuit provided with a DRC control parameter configured based on the ambient input data,
- wherein the DRC circuit is configured to process the audio data to provide processed audio data and to provide the processed audio data for playback by the audio playback device.
A computer program product comprising a computer readable storage medium having stored thereon program instructions which, when executed on by one or more processor circuits, cause the one or more processor circuits to:
- receive audio data for playback by the audio playback device,
- obtain, by one or more sensor circuits, ambient input data indicative of a state of an environment of the audio playback device,
- control at least one DRC control parameter of a dynamic range controller (DRC) based on the ambient input data,
- process the audio data by the DRC to provide processed audio data, and
- provide the processed audio data for playback by the audio playback device.
Dependencies are inferred from the claim text.