Title :
ARMA processes in sub-bands with application to audio restoration
Author :
Biscainho, Luiz W P ; Diniz, Paulo S R ; Esquef, Paulo A A
Author_Institution :
COPPE, Univ. Fed. do Rio de Janeiro, Brazil
Abstract :
It was recently shown (May 200) that the sub-band signals resulting from the analysis of an ARMA process by a decimating filter bank can be modeled by individual lower-rate ARMA processes. This paper discusses the validity of this modeling and the zero-pole mapping of the generator filters along the sub-bands. Based on these results, a sub-band version of a model-based technique for de-clicking of audio recordings is proposed. Simulation results are presented and validated by subjective as well as objective means
Keywords :
audio recording; autoregressive moving average processes; signal reconstruction; ARMA processes; audio restoration; de-clicking; decimating filter bank; generator filters; sub-bands; zero-pole mapping; Acoustics; Audio recording; Autoregressive processes; Filter bank; Poles and zeros; Random processes; Signal analysis; Signal processing; Signal restoration; Speech processing;
Conference_Titel :
Circuits and Systems, 2001. ISCAS 2001. The 2001 IEEE International Symposium on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7803-6685-9
DOI :
10.1109/ISCAS.2001.921031
