Frame erasure concealment using sinusoidal analysis-synthesis and its application to MDCT-based codecs

Author

Parikh, Vipul N. ; Chen, Juin-Hwey ; Aguilar, Gerard

Author_Institution

Speech Technol. Group, Lucent InterNetworking Syst., Red Bank, NJ, USA

Volume

2

fYear

2000

fDate

2000

Abstract

This paper presents a frame erasure concealment algorithm based on sinusoidal analysis-synthesis and its application to MDCT-based codecs. When a frame is lost, sinusoidal analysis of the previously decoded and buffered signal is performed. The analysis gives a set of sinusoids, which are used to synthesize the waveform corresponding to the lost frame. When applied to an MDCT-based codec, the algorithm exploits the MDCT windowing and overlap-add synthesis mechanism to improve waveform synthesis in the lost frame. At frame erasure rates up to 10%, this algorithm significantly improves perceptual quality of the decoder output

Keywords

audio coding; discrete cosine transforms; spectral analysis; speech codecs; transform coding; MDCT windowing; MDCT-based codecs; frame erasure concealment; overlap-add synthesis mechanism; perceptual quality; sinusoidal analysis-synthesis; waveform synthesis; Decoding; Degradation; Multiple signal classification; Network synthesis; Signal analysis; Signal synthesis; Speech analysis; Speech codecs; Speech coding; Speech synthesis;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 2000. ICASSP '00. Proceedings. 2000 IEEE International Conference on

Conference_Location

Istanbul

ISSN

1520-6149

Print_ISBN

0-7803-6293-4

Type

conf

DOI

10.1109/ICASSP.2000.859107

Filename

859107