Calibration of audio playback devices
First Claim
1. An audio playback device comprising:
- a microphone;
a speaker;
a processor;
data storage storing (i) a state variable representing a current configuration of the audio playback device and (ii) instructions that when executed by the processor cause the audio playback device to perform functions comprising;
outputting, via the speaker, first audio content;
receiving, via the microphone, data representing one or more reflections of the first audio content in a given environment, wherein the audio playback device is located within the given environment at a first spatial location, and wherein the microphone is on or proximate to the audio playback device;
determining a first acoustic response comprising a microphone response representing an acoustic response of the given environment as measured at the first spatial location within the given environment;
based on the first acoustic response and the state variable representing the current configuration of the audio playback device, determining a mapping from the first acoustic response to a corresponding second acoustic response comprising a mapped room response, wherein the second acoustic response approximates an acoustic response of the given environment as measured at a second spatial location, wherein the mapped room response comprises a particular historical room response from a set of historical room responses, and wherein the particular historical room response corresponds to the current configuration of the audio playback device; and
adjusting output of the speaker based on the second acoustic response.
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Accused Products
Abstract
An audio playback device comprises a microphone, a speaker, and a processor. The processor is arranged to output by the speaker first audio content and receive by the microphone an indication of the first audio content. A first acoustic response of a room in which the audio playback device is located is determined based on the received indication of first audio content. A mapping is applied to the first acoustic response to determine a second acoustic response. The second acoustic response is indicative of an approximated acoustic response of the room at a spatial location different from a spatial location of the microphone. The second audio content output by the speaker is adjusted based on the second response.
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Citations
20 Claims
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1. An audio playback device comprising:
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a microphone; a speaker; a processor; data storage storing (i) a state variable representing a current configuration of the audio playback device and (ii) instructions that when executed by the processor cause the audio playback device to perform functions comprising; outputting, via the speaker, first audio content; receiving, via the microphone, data representing one or more reflections of the first audio content in a given environment, wherein the audio playback device is located within the given environment at a first spatial location, and wherein the microphone is on or proximate to the audio playback device; determining a first acoustic response comprising a microphone response representing an acoustic response of the given environment as measured at the first spatial location within the given environment; based on the first acoustic response and the state variable representing the current configuration of the audio playback device, determining a mapping from the first acoustic response to a corresponding second acoustic response comprising a mapped room response, wherein the second acoustic response approximates an acoustic response of the given environment as measured at a second spatial location, wherein the mapped room response comprises a particular historical room response from a set of historical room responses, and wherein the particular historical room response corresponds to the current configuration of the audio playback device; and adjusting output of the speaker based on the second acoustic response. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method to be performed by an audio playback device comprising a microphone, a speaker, and data storage storing a state variable representing a current configuration of the audio playback device, the method comprising
outputting, via the speaker, first audio content; -
receiving, via the microphone, data representing one or more reflections of the first audio content in a given environment, wherein the audio playback device is located within the given environment at a first spatial location, and wherein the microphone is on or proximate to the audio playback device; determining a first acoustic response comprising a microphone response representing an acoustic response of the given environment as measured at the first spatial location within the given environment; based on the first acoustic response and the state variable representing the current configuration of the audio playback device, determining a mapping from the first acoustic response to a corresponding second acoustic response comprising a mapped room response, wherein the second acoustic response approximates an acoustic response of the given environment as measured at a second spatial location, wherein the mapped room response comprises a particular historical room response from a set of historical room responses, and wherein the particular historical room response corresponds to the current configuration of the audio playback device; and adjusting output of the speaker based on the second acoustic response. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A tangible non-transitory computer-readable medium having stored thereon instructions executable by an audio playback device to cause the audio playback device to perform a method comprising:
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outputting, via a speaker of the audio playback device, first audio content; receiving, via a microphone of the audio playback device, data representing one or more reflections of the first audio content in a given environment, wherein the audio playback device is located within the given environment at a first spatial location, and wherein the microphone is on or proximate to the audio playback device; determining a first acoustic response comprising a microphone response representing an acoustic response of the given environment as measured at the first spatial location within the given environment; based on the first acoustic response and a state variable representing a current configuration of the audio playback device, determining a mapping from the first acoustic response to a corresponding second acoustic response comprising a mapped room response, wherein the second acoustic response approximates an acoustic response of the given environment as measured at a second spatial location, wherein the mapped room response comprises a particular historical room response from a set of historical room responses, and wherein the particular historical room response corresponds to the current configuration of the audio playback device; and adjusting output of the speaker based on the second acoustic response. - View Dependent Claims (18, 19, 20)
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Specification