Beracoechea-Álava, Jon A.Casajús Quirós, F. J.García Morales, LinoTorres-Guijarro, Soledad2016-08-082016-08-082006Beracoechea-Álava, J. A., Casajús, F. J., García Morales, L., & Torres-Guijarro, S. (2006). Conjugate gradient techniques for multichannel acoustic echo cancellation in frequency domain. In 120 Audio Engineering Society Convention (AES 2006), 20-23 May. Paris, France.9781604235975http://hdl.handle.net/11268/5570Multichannel acoustic cancellation problem requires working with extremely large impulse responses. Multirate adaptive schemes such as the partitioned block frequency-domain adaptive filter (PBFDAF) are good alternatives and are widely used in commercial echo cancellation systems nowadays. However, being a Least Mean Square (LMS) derived algorithm, the convergence speed may not be fast enough under some circumstances. In this paper we propose a new scheme which combines frequency-domain adaptive filtering with conjugate gradient techniques in order to speed up the convergence time. The new algorithm (PBFDAF-CG) is developed and its behavior is compared against previous PBFDAF schemes.engconference outputrestricted accessSonidoAcústicaAudioAcústica