Adaptive receiver
First Claim
1. A system for determining a proximity state relating to a proximity of a speaker from an ear of a user, the system comprising:
- an audio path configured to deliver an audio signal comprising a diagnostic signal to the speaker; and
proximity estimator circuitry configured to;
receive a feedback signal from a feedback microphone configured to monitor the output of the speaker in the vicinity of the speaker, wherein the feedback signal is based on the diagnostic signal; and
analyze the diagnostic signal and the feedback signal to calculate the proximity state, wherein the proximity estimator circuitry is configured to assess a coupling between the speaker and the feedback microphone using a feedback algorithm.
2 Assignments
0 Petitions
Accused Products
Abstract
A nonlinear control system and a speaker protection system are disclosed. In particular, a control system for adapting an audio output from a speaker in the proximity of an object is disclosed. The controller is configured to accept one or more input signals, and one or more estimated states produced by the model to produce one or more control signals. A speaker protection system and a quality control system are disclosed. More particularly, a system for clamping the input to a speaker dependent upon an estimate of the proximity, acoustic volume, and/or acoustic coupling of the speaker to a nearby object is disclosed.
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Citations
26 Claims
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1. A system for determining a proximity state relating to a proximity of a speaker from an ear of a user, the system comprising:
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an audio path configured to deliver an audio signal comprising a diagnostic signal to the speaker; and proximity estimator circuitry configured to; receive a feedback signal from a feedback microphone configured to monitor the output of the speaker in the vicinity of the speaker, wherein the feedback signal is based on the diagnostic signal; and analyze the diagnostic signal and the feedback signal to calculate the proximity state, wherein the proximity estimator circuitry is configured to assess a coupling between the speaker and the feedback microphone using a feedback algorithm. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for determining a proximity state relating to a proximity or distance of a speaker from an ear of a user, the method comprising:
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outputting to the speaker an audio signal comprising a diagnostic signal; monitoring the output of the speaker in the vicinity of the speaker to generate a feedback signal based on the diagnostic signal; analyzing the diagnostic signal and the feedback signal to calculate the proximity state; and clamping the audio signal or restoring the audio signal based on whether the proximity state indicates establishment or loss of a gasket between the speaker and the ear of the user.
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20. A system for determining a proximity state relating to a proximity of a speaker from an ear of a user, the system comprising:
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an audio path configured to deliver an audio signal comprising a diagnostic signal to the speaker; and proximity estimator circuitry configured to; receive a feedback signal from a feedback microphone configured to monitor the output of the speaker in the vicinity of the speaker, wherein the feedback signal is based on the diagnostic signal; and analyze the diagnostic signal and the feedback signal to calculate the proximity state, wherein the system is configured to input the feedback signal into a parametric extraction algorithm to generate a control parameter related to a degree of a gasket between the speaker and the ear of the user.
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21. A system for determining a proximity state relating to a proximity of a speaker from an ear of a user, the system comprising:
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an audio path configured to deliver an audio signal comprising a diagnostic signal to the speaker; and proximity estimator circuitry configured to; receive a feedback signal from a feedback microphone configured to monitor the output of the speaker in the vicinity of the speaker, wherein the feedback signal is based on the diagnostic signal; and analyze the diagnostic signal and the feedback signal to calculate the proximity state, wherein the system is configured to clamp the audio signal or restore the audio signal based on whether the proximity state indicates establishment or loss of a gasket between the speaker and the ear of the user.
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22. A system for determining a proximity state relating to a proximity of a speaker from an ear of a user, the system comprising:
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an audio path configured to deliver an audio signal comprising a diagnostic signal to the speaker; and proximity estimator circuitry configured to; receive a feedback signal from a feedback microphone configured to monitor the output of the speaker in the vicinity of the speaker, wherein the feedback signal is based on the diagnostic signal; and analyze the diagnostic signal and the feedback signal to calculate the proximity state, wherein the system is configured to output an interrupt flag based on whether the proximity state indicates establishment or loss of a gasket between the speaker and the ear of the user.
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23. A system for determining a proximity state relating to a proximity of a speaker from an ear of a user, the system comprising:
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an audio path configured to deliver an audio signal comprising a diagnostic signal to the speaker; and proximity estimator circuitry configured to; receive a feedback signal from a feedback microphone configured to monitor the output of the speaker in the vicinity of the speaker, wherein the feedback signal is based on the diagnostic signal; and analyze the diagnostic signal and the feedback signal to calculate the proximity state, wherein the proximity estimator circuitry is configured to use frequency sensitivity measurements to detect an extent of a gasket between the speaker and the ear of the user.
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24. A system for determining a proximity state relating to a proximity of a speaker from an ear of a user, the system comprising:
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an audio path configured to deliver an audio signal comprising a diagnostic signal to the speaker; and proximity estimator circuitry configured to; receive a feedback signal from a feedback microphone configured to monitor the output of the speaker in the vicinity of the speaker, wherein the feedback signal is based on the diagnostic signal; and analyze the diagnostic signal and the feedback signal to calculate the proximity state, wherein the proximity estimator circuitry is configured to calculate the proximity state based on a change in power spectra indicative of an extent of an ear gasket formed.
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25. A method for determining a proximity state relating to a proximity or distance of a speaker from an ear of a user, the method comprising:
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outputting to the speaker an audio signal comprising a diagnostic signal; monitoring the output of the speaker in the vicinity of the speaker to generate a feedback signal based on the diagnostic signal; analyzing the diagnostic signal and the feedback signal to calculate the proximity state; and assessing a coupling between the speaker and the feedback microphone using a feedback algorithm.
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26. A method for determining a proximity state relating to a proximity or distance of a speaker from an ear of a user, the method comprising:
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outputting to the speaker an audio signal comprising a diagnostic signal; monitoring the output of the speaker in the vicinity of the speaker to generate a feedback signal based on the diagnostic signal; analyzing the diagnostic signal and the feedback signal to calculate the proximity state; and inputting the feedback signal into a parametric extraction algorithm to generate a control parameter related to a degree of a gasket between the speaker and the ear of the user.
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Specification