Robust and Efficient Implementation of the PEM—AFROW Algorithm for Acousic Feedback Cancellation
The PEM-AFROW algorithm has been developed to model a room impulse response under closed-loop conditions, such as in microphone-amplifier-loudspeaker systems, and is particularly suited for a speech signal input. If a controller is inserted in the loop that uses this model to remove the loudspeaker signal component from the microphone signal, an efficient feedback cancellation can be performed. Crucial implementation-oriented issues that have not been studied so far are addressed. In particular, adaptation control mechanisms are proposed for feedback cancellation based on PEM-AFROW, and efficient subband and frequencydomain implementations are provided for this algorithm.
Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!
This paper costs $33 for non-members and is temporarily free for AES members.