Title :
Implementation challenges for feedback active noise cancellation
Author :
Krishnamurthy, Nitish ; Mansour, Mohamed ; Cole, Randy
Author_Institution :
Syst. & Applic. R&D Center, Texas Instrum. Inc., Dallas, TX, USA
Abstract :
This work describes the factors limiting the performance in practical implementations of digital active noise cancellation (ANC) in commercial systems. This includes the codec delay, the secondary path variability, and the acoustic limitations. The causes for each limiting factor are studied and solutions are proposed that significantly improve system performance and robustness.
Keywords :
audio coding; audio signal processing; delays; microphones; signal denoising; ANC; acoustic limitations; codec delay; digital active noise cancellation; feedback active noise cancellation; ideal single microphone ANC system; secondary path variability; Codecs; Delay; Headphones; Microphones; Noise cancellation; Prediction algorithms; Active noise cancellation; FXLMS; analog-to-digital; audio; delay; headphone;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2012 IEEE International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-1-4673-0045-2
Electronic_ISBN :
1520-6149
DOI :
10.1109/ICASSP.2012.6288212
