Patent ID: 9729976
Date: 2017-08-08
CPC Classifications: H04R

Claim:
1. A hearing assistance device configured to store information relating to acoustic feedback events of the hearing assistance device, comprising: a microphone to receive sound and convert it to an input signal; a receiver to play output sound based on an output signal; and a digital signal processor adapted to process the input signal and generate the output signal, the digital signal processor adapted to perform a subband process to reduce acoustic feedback between the receiver and the microphone on a band-by-band basis of at least some subbands of the subband process, the digital signal processor further adapted to store information relating to the acoustic feedback events for one or more subbands of the at least some subbands over an extended period of use of the hearing assistance device, and the digital signal processor is configured to store the information including an indication of a magnitude of severity of a feedback event of the acoustic feedback events, wherein the digital signal processor is configured to reduce acoustic feedback at least in part using subtraction of an acoustic feedback estimate, wherein the information is accessible for analysis to determine aspects of the acoustic feedback experienced by the hearing assistance device over the extended period of use for the one or more subbands, the extended period of use including different acoustic environments experienced by a wearer of the hearing assistance device during use of the heating assistance device, and wherein the digital signal processor is configured to store information upon occurrence of a programmable event and to disable storing information relating to the acoustic feedback events during power up of the device so that feedback due to insertion of hearing assistance device into an ear is not stored.