Subband coding is an efficient technique to compress audio and video signals. Signal spectrum is divided into subbands that are separately quantized and coded. In nonuniform filter banks, the subbands have different width. The use of nonuniform filter banks is attractive in some applications, such as audio coding, where the spectrum decomposition can be designed to match as close as possible the partition in critical bands of the human auditory system. This can simplify the subband quantization procedure, even if, as a drawback, the design and implementation of nonuniform filter banks is more troublesome than that of uniform ones. In this study, we describe a method to design nonuniform filter banks and the implementation of a real-time audio coder based on the TMS320C6201 DSP.

Design and implementation of a nonuniform subband audio coder / F. Argenti; A. Mannuccini; E. Del Re. - STAMPA. - (2000), pp. 1-5. (Intervento presentato al convegno Third European DSP Education & Research Conference tenutosi a Paris nel 20-21 September 2000).

Design and implementation of a nonuniform subband audio coder

ARGENTI, FABRIZIO;DEL RE, ENRICO
2000

Abstract

Subband coding is an efficient technique to compress audio and video signals. Signal spectrum is divided into subbands that are separately quantized and coded. In nonuniform filter banks, the subbands have different width. The use of nonuniform filter banks is attractive in some applications, such as audio coding, where the spectrum decomposition can be designed to match as close as possible the partition in critical bands of the human auditory system. This can simplify the subband quantization procedure, even if, as a drawback, the design and implementation of nonuniform filter banks is more troublesome than that of uniform ones. In this study, we describe a method to design nonuniform filter banks and the implementation of a real-time audio coder based on the TMS320C6201 DSP.
2000
Third European DSP Education & Research Conference
Third European DSP Education & Research Conference
Paris
20-21 September 2000
F. Argenti; A. Mannuccini; E. Del Re
File in questo prodotto:
File Dimensione Formato  
Design and implementation of a nonuniform subband audio coder.pdf

accesso aperto

Tipologia: Pdf editoriale (Version of record)
Licenza: Tutti i diritti riservati
Dimensione 351.16 kB
Formato Adobe PDF
351.16 kB Adobe PDF

I documenti in FLORE sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificatore per citare o creare un link a questa risorsa: https://hdl.handle.net/2158/361014
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact