Conversion of stereo recording to 5.1 format using head-related transfer functions

• Autorzy: Hen P. , Kin M. J. , Plaskota P.
• Konferencja: 12th International Symposium on Sound and Vision Engineering and Mastering (ISSVEM'07), June 15-16, Gdansk, Poland
• Języki publikacji: EN

Abstrakty

EN

The paper presents the conversion of stereo recordings into multi-channel format 5.1 by means of the HRTF filtering. An algorithm of additional channels preparation (a central one and two surround ones) using various filters created on the base of HRTF was tested. The filter bank was prepared on the basis of impulse responses given by users. The algorithm uses the impulse response convolution of the filter with a processed signal. The convolution is realized in frequency domain, i.e. Fourier transforms of the processed signals are multiplied. Recordings created in such way were tested for the features of sound color distortion and spaciousness of the audio-scene in frontal plane.

Słowa kluczowe

EN

HRTF; sound recording

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2008
• Tom: Vol. 33, No. 1
• Strony: 7--10
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Hen P.

autor

Kin M. J.

autor

Plaskota P.

• Wrocław University of Technology, Institute of Telecommunications, Teleinformatics and Acoustics, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland,

Bibliografia

• [1] ATSC Standard: Digital Audio Compression (AC-3), Revision A – Advanced Television Systems Committee 1750 K Street, N.W. Suite 1200, Washington, D.C. 2006.
• [2] CHENG C. I, WAKEFIELD G. H., Introduction to head-related transfer functions (HRTFs): representations of HRTFs in time, frequency, and space, J. Audio Eng. Soc., 51, 9 (2003).
• [3] ITU-R Recommendation BS.775-1 Multichannel stereophonic sound system with and without accompanying picture, 1994.
• [4] KLEINER M., DALENBACK, B. I. SVENSSON P., Auralisation – an overview, Journal of the Audio Engineering Society, 41, 11, 861–875, (1993).
• [5] OPPENHEIM A. V., SCHAFER R. W., Digital signal processing, Englewood Cliffs, NJ, Prentice-Hall, Inc. 1975.
• [6] SINGLETON R. C., An algorithm for computing the mixed radix fast Fourier transform, IEEE Trans. Audio Electroacoust., AU-17, p. 93, June 1969.