Computing of masking thresholds for audio coders based on a quaternionic 4-band wavelet packet transform

• Autorzy: Parfieniuk M. , Baszun J. , Petrovsky A. A.
• Języki publikacji: EN

Abstrakty

EN

A wavelet packet based on 4-band building blocks was used to implement an auditory model for 44.1kHz and 16kHz sampling frequency. The underlying paraunitary filter bank is implemented using a quaternionic lattice structurally insensitive to the quantization of its coefficients. Both the linear phase and orthogonality are possible for 4-band wavelets, so a better perceptual quality can be expected and an increased compression ratio for the coders based on the proposed solution in comparison to standard 2-band wavelet packets or a warped DFT transform. These features and a low computational complexity predestinate this approach to be a tempting alternative to widely known solutions.

Słowa kluczowe

EN

wavelet packet transform; quaternion; masking threshold

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2006
• Tom: Vol. 31, No. 2
• Strony: 155--165
• Opis fizyczny: Bibliogr. 12 poz.

Twórcy

autor

Parfieniuk M.

autor

Baszun J.

autor

Petrovsky A. A.

• Białystok University of Technology, Wiejska 45A, 15-351 Białystok, Poland,

Bibliografia

• [1] JOHNSTON J. D., Transform coding of audio signals using perceptuals noise criteria, IEEE Trans. on Select. Areas Commun., 6, 314–323 (1988).
• [2] PAINTER T., SPANIAS A., Perceptual coding of digital audio, Proceedings of the IEEE., 88, 4, 451–513 (2000).
• [3] PARFIENIUK M., PETROVSKY A. A., Warped DFT as the basis for psychoacoustic model, ICASSP 2004m Montreal, Canada, 17–21 May 2004, on CD.
• [4] ZWICKER E., TERHARDT E., Analytical expressions for critical-band rate and bandwidth as a function of frequency, JASA, 68, 1523–1525 (1980).
• [5] SINHA D., TEWFIK A., Low bit-rate transparent audio compression using adapted wavelets, IEEE Trans. Signal Processing, 41, 3463–3479 (1993).
• [6] PETROVSKY A., KRAHE D., PETROVSKY A. A., Real-time wavelet packet-based low bit rate audio coding on a dynamic reconfiguration system, Proc. 114-th AES Convention, Amsterdam, The Netherlands, p. 22, 22–25, March 2003.
• [7] ZURERA ROSA M., REYES RUIZ N., CANDEAS VERA P., FERRERAS LÓPEZ F., Use of the symmetrical extension for improving a time-varying wavelet-packet-based audio coder, Digital Signal Processing, 13, 457–469 (2003).
• [8] SOMAN A. K., VAIDYANATHAN P. P., NGUYEN T. Q., Linear phase paraunitary filter banks: theory, factorization and designs, IEEE Trans. Signal Processing, 41, 3480–3496 (1996).
• [9] PARFIENIUK M., BASZUN J., PETROVSKY A. A., FPGA friendly quaternionic 4-band wavelet packet transforms for sound processing, MIXDES 2005, 22–25 June, Kraków 2005.
• [10] STRANG G., NGUYEN T., Wavelets and filter banks, Wellesley-Cambridge Press, Wellesley, MA, 1996.
• [11] PARFIENIUK M., PETROVSKY A., Linear phase paraunitary filter banks based on quaternionic component, Proc. Int. Conf. on Signals and Electronic Systems ICSES’04, Pozna´n, Poland, 13–15 September, pp. 203–206, 2004.
• [12] CARNERO B., DRYGAJLO A., Perceptual speech coding and enhancement using frame-synchronized fast wavelet packet transform algorithms, IEEE Trans. Signal Processing, 47, 1622–1635 (1999).