Active acoustic filter with automatic selection of filter parameters based on ambient sound
First Claim
Patent Images
1. An active acoustic filter system, comprising:
- a housing;
an active acoustic filter configured to convert ambient sound into digitized ambient sound, wherein the active acoustic filter comprises a microphone, a preamplifier, an analog to digital converter, a digital to analog converter, an amplifier, and a speaker that are disposed within the housing;
a memory storing one or more stored sound profiles and a respective set of processing parameters associated with each of the one or more stored sound profiles;
one or more processors, at least one of the one or more processors being enclosed by the housing and configured for communication with the memory, the at least one of the one or more processors being configured to;
analyze the digitized ambient sound to create an ambient sound profile;
determine whether or not the ambient sound profile matches one of the one or more stored sound profiles; and
when the ambient sound profile matches one of the one or more stored sound profiles;
retrieve the set of processing parameters associated with the stored sound profile that matches the ambient sound profile, andgenerate digitized processed sound by processing the digitized ambient sound in accordance with the set of processing parameters retrieved from the memory; and
when the ambient sound profile does not match one of the one or more stored sound profiles, generate digitized processed sound by processing the digitized ambient sound in accordance with processing parameters established by a user of the active acoustic filter, wherein the processing parameters adjust one or more decibel levels associated with frequency ranges of the digitized ambient sound, wherein the active acoustic filter is configured to convert the digitized processed sound into processed output sound.
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Abstract
Active acoustic filter systems and methods are disclosed. An active acoustic filter system includes a memory storing one or more stored sound profiles and a respective set of processing parameters associated with each of the one or more stored sound profiles. A processor coupled to the memory generates processed sound by processing ambient sound in accordance with a set of processing parameters retrieved from the memory based on results from comparing an ambient sound profile to at least one of the one or more stored sound profiles.
10 Citations
20 Claims
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1. An active acoustic filter system, comprising:
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a housing; an active acoustic filter configured to convert ambient sound into digitized ambient sound, wherein the active acoustic filter comprises a microphone, a preamplifier, an analog to digital converter, a digital to analog converter, an amplifier, and a speaker that are disposed within the housing; a memory storing one or more stored sound profiles and a respective set of processing parameters associated with each of the one or more stored sound profiles; one or more processors, at least one of the one or more processors being enclosed by the housing and configured for communication with the memory, the at least one of the one or more processors being configured to; analyze the digitized ambient sound to create an ambient sound profile; determine whether or not the ambient sound profile matches one of the one or more stored sound profiles; and when the ambient sound profile matches one of the one or more stored sound profiles; retrieve the set of processing parameters associated with the stored sound profile that matches the ambient sound profile, and generate digitized processed sound by processing the digitized ambient sound in accordance with the set of processing parameters retrieved from the memory; and when the ambient sound profile does not match one of the one or more stored sound profiles, generate digitized processed sound by processing the digitized ambient sound in accordance with processing parameters established by a user of the active acoustic filter, wherein the processing parameters adjust one or more decibel levels associated with frequency ranges of the digitized ambient sound, wherein the active acoustic filter is configured to convert the digitized processed sound into processed output sound. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method, comprising:
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converting, by an active acoustic filter, ambient sound into digitized ambient sound, wherein the active acoustic filter comprises a microphone, a preamplifier, an analog to digital converter, a digital to analog converter, an amplifier, and a speaker that are disposed within a housing; storing, in a memory, one or more stored sound profiles and a respective set of processing parameters associated with each of the one or more stored sound profiles; analyzing the digitized ambient sound to create an ambient sound profile; determining whether or not the ambient sound profile matches one of the one or more stored sound profiles; generating digitized processed sound by processing the digitized ambient sound in accordance with whether the ambient sound profile matches one of the one or more stored sound profiles; and converting the digitized processed sound into processed output sound wherein; the converting, analyzing, determining and generating are performed by a processor disposed within the housing; when the ambient sound profile does not match one of the one or more stored sound profiles, the method further comprises generating, by the processor, the digitized processed sound by processing the digitized ambient sound in accordance with processing parameters established by a user of the active acoustic filter; and the processing parameters adjust one or more decibel levels associated with frequency ranges of the digitized ambient sound. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A computer program product, the computer program product being embodied in a tangible non-transitory computer readable storage medium and comprising instructions which, when executed by a processor, cause the processor to perform the steps of:
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converting ambient sound into digitized ambient sound, wherein the ambient sound is converted into digitized ambient sound by an active acoustic filter that comprises a microphone, a preamplifier, an analog to digital converter, a digital to analog converter, an amplifier, and a speaker that are disposed within a housing; storing, in a memory, one or more stored sound profiles and a respective set of processing parameters associated with each of the one or more stored sound profiles; analyzing the digitized ambient sound to create an ambient sound profile; determining whether or not the ambient sound profile matches one of the one or more stored sound profiles; when the ambient sound profile matches one of the one or more stored sound profiles; retrieving the set of processing parameters associated with the stored sound profile that matches the ambient sound profile, and generating digitized processed sound by processing the digitized ambient sound in accordance with the set of processing parameters retrieved from the memory; and when the ambient sound profile does not match one of the one or more stored sound profiles; generating the digitized processed sound by processing the digitized ambient sound in accordance with processing parameters established by a user of the active acoustic filter, wherein the processing parameters adjust one or more decibel levels associated with frequency ranges of the digitized ambient sound; and convert the digitized processed sound into processed output sound, wherein the converting, analyzing, determining and generating are performed by a processor disposed within the housing.
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Specification