Title :
Pitch enhancement motivated by rate-distortion theory
Author :
Moussa, Obada Alhaj ; Minyue Li ; Kleijn, W. Bastiaan
Author_Institution :
Electr. Eng., KTH - R. Inst. of Technol., Stockholm, Sweden
Abstract :
A pitch enhancement filter is designed with the objective to approach the optimal rate-distortion trade-off. The filter shows significant perceptual benefits, restating that information-theoretical and perceptual criteria are usually consistent. The filter is easy to implement and can be used as a complement to existing audio codecs. Our experiments show that it can improve the reconstruction quality of the AMR-WB standard.
Keywords :
audio coding; rate distortion theory; speech codecs; speech processing; AMR-WB standard; audio codecs; optimal rate-distortion trade-off; pitch enhancement filter; rate-distortion theory; reconstruction quality; Harmonic analysis; Noise; Quantization (signal); Rate-distortion; Speech; Speech enhancement; pitch enhancement; rate-distortion theory; speech quality;
Conference_Titel :
Acoustics, Speech and Signal Processing (ICASSP), 2014 IEEE International Conference on
Conference_Location :
Florence
DOI :
10.1109/ICASSP.2014.6854816
