Binaurally coordinated compression system

摘要

A hearing assistance system includes a pair of hearing aids performing dynamic range compression while preserving spatial cue to provide a hearing aid wearer with satisfactory listening experience in complex listening environments. In various embodiments, the dynamic range compression is binaurally coordinated based on number and distribution of sound source(s). In various embodiments, in addition to preserving spatial cue, the dynamic range compression is controlled to optimize audibility and comfortable loudness of target signals.

主权项

1. A hearing assistance system for use by a listener, comprising:
a first microphone configured to produce a first signal; a first receiver configured to transmit a first sound to the listener; a second microphone configured to produce a second signal; a second receiver configured to transmit a second sound to the listener; control circuitry configured to produce the first sound and the second sound by processing the first signal using a first gain and processing the second signal using a second gain, the processing circuit configured to:
measure a first signal-to-noise ratio (SNR) of the first signal and a second SNR of the second signal;determine a first gain value for the first gain and a second gain value for the second gain independently when a minimum of the first SNR and the second SNR exceeds a threshold SNR; anddetermine a common gain value for the first gain and the second gain when the minimum of the first SNR and the second SNR does not exceed the threshold SNR.