Title :
A real time acoustic echo canceller implemented on the Motorola DSP56307
Author :
Ochoa, E.A.V. ; Renteria, M.E.G. ; Guerrero, A.V.
Author_Institution :
CINVESTAV-IPN, Mexico City
Abstract :
This paper presents the implementation of a complete acoustic echo cancellation system working in real time. This system has implemented functional blocks that help the system to be stable under all the possible states of the hands free telephone communication. Subjective listening tests results, shows that the system has a good performance (four in a scale from 1-5) for all the effects under study, like loss of convergence, inability to follow change in acoustics and howling
Keywords :
acoustic signal processing; digital signal processing chips; echo; echo suppression; real-time systems; telecommunication computing; telephone sets; Motorola DSP56307; convergence loss; functional blocks; hands free telephone communication; howling; real-time acoustic echo canceller; subjective listening tests; Adaptive filters; Echo cancellers; Finite impulse response filter; Iterative algorithms; Loudspeakers; Microphones; Speech; Stability; Telephony; Transversal filters;
Conference_Titel :
Industrial Electronics, 2000. ISIE 2000. Proceedings of the 2000 IEEE International Symposium on
Conference_Location :
Cholula, Puebla
Print_ISBN :
0-7803-6606-9
DOI :
10.1109/ISIE.2000.930370
