Title :
A modified pitch detection algorithm
Author :
Hu, Jianling ; Xu, Sheng ; Chen, Jian
Author_Institution :
Shanghai Jiaotong Univ., China
fDate :
2/1/2001 12:00:00 AM
Abstract :
Sinusoidal speech coders have been widely studied for low bit rate coding due to their capability of producing high quality speech. However, the estimation error of the sinusoidal model parameters, pitch in particular, would seriously degrade the speech quality. We provide a modified pitch detection algorithm (MPDA). The experimental results show that the proposed method can provide a more accurate and smoother pitch tracking that that of IMBE, and the reconstructed speech sounds more continuous.
Keywords :
parameter estimation; signal detection; signal reconstruction; speech coding; speech intelligibility; vocoders; estimation error; high quality speech; low bit rate coding; modified pitch detection algorithm; pitch tracking; reconstructed speech; sinusoidal model parameters; sinusoidal speech coders; speech quality; Bit rate; Degradation; Detection algorithms; Estimation error; Frequency estimation; Low pass filters; Parameter estimation; Shape control; Speech coding; Vocoders;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.905937
