When an electro-acoustic system with an adaptive feedback canceller is presented with a correlated input signal, a recurrent distortion artifact, entrainment is generated.
Adaptive feedback cancellation algorithms are techniques that estimate the transmission path between loudspeaker and microphone(s).
Today, adaptive feedback cancellation is in nearly every digital hearing aid and current research is still ongoing.
The product of the adaptive filter cancels the feedback from the microphone creating clear sound from the hearing aid.
This change proposes to improve adaptive feedback cancellation in objects like hearing aids and other audio applications.
Current research intends to use digital signal processing to mimic the cancellation in hearing aids in smartphones.