Acoustics, Speech, and Signal Processing, IEEE International Conference on (1999)
Phoenix, AZ, USA
Mar. 15, 1999 to Mar. 19, 1999
A. Uncini , Dipt. di Elettronica e Autom., Ancona Univ., Italy
A new system for speech quality enhancement (SQE) is presented. A SQE system attempts to recover the high and low frequencies from a narrow-band speech signal, usually working as a post-processor at the receiver side of a transmission system. The new system operates directly in the frequency domain using complex-valued neural networks. In order to reduce the computational burden and improve the generalization capabilities, a new architecture based on a previously introduced neural network, called the adaptive spline neural network (ASNN), is employed. Experimental results demonstrate the effectiveness of the proposed method.
A. Uncini, F. Gobbi and F. Piazza, "Frequency recovery of narrow-band speech using adaptive spline neural networks," 1999 IEEE International Conference on Acoustics, Speech, and Signal Processing. Proceedings. ICASSP99(ICASSP), Phoenix, AZ, USA, 1999, pp. 997-1000.