Tonality-driven feedback canceler adaptation
AssigneeStarkey Laboratories, Inc.
InventorsCarlos Renato Calcada Nakagawa, Kelly Fitz
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Abstract
Disclosed herein, among other things, are apparatus and methods for tonality-driven feedback canceler adaptation for hearing devices. Various embodiments include a method of signal processing an input signal in a hearing device to mitigate entrainment, the hearing device including a receiver and a microphone. The method includes detecting strength of tonality of the input signal by estimating a second derivative of subband phase of the input signal, and adjusting parameters of an adaptive feedback canceler of the hearing device based on the detected tonality.
Claims20
A method of signal processing an input signal in a hearing device to mitigate entrainment, the hearing device including a receiver and a microphone, the method comprising:
- detecting strength of tonality of the input signal by estimating a second derivative of subband phase of the input signal by comparing a first block-to-block difference of tonal energy in of a first sequence of blocks to a second block-to-block difference of tonal energy of a second sequence of blocks, wherein the first sequence and the second sequence overlap;
- and
- adjusting parameters of an adaptive feedback canceler of the hearing device based on the detected strength of tonality.
A hearing device, comprising:
- a microphone configured to receive audio signals;
- and
- a processor configured to process the audio signals to correct for a hearing impairment of a wearer, the processor further configured to:
- detect strength of tonality of the audio signals by estimating a second derivative of subband phase of the audio signals by comparing a first block-to-block difference of tonal energy in of a first sequence of blocks to a second block-to-block difference of tonal energy of a second sequence of blocks, wherein the first sequence and the second sequence overlap;
- and
- adjust parameters of an adaptive feedback canceler of the hearing device based on the detected strength of tonality.
Dependencies are inferred from the claim text.