Efficient 3-D Sound Movement with Time-Varying IIR Filters

Kosuke TSUJINO; Wataru KOBAYASHI; Takao ONOYE; Yukihiro NAKAMURA

doi:10.1093/ietfec/e90-a.3.618

Efficient 3-D Sound Movement with Time-Varying IIR Filters

Kosuke TSUJINO, Wataru KOBAYASHI, Takao ONOYE, Yukihiro NAKAMURA

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3-D sound using head-related transfer functions (HRTFs) is applicable to embedded systems such as portable devices, since it can create spatial sound effect without multichannel transducers. Low-order modeling of HRTF with an IIR filter is effective for the reduction of the computational load required in embedded applications. Although modeling of HRTFs with IIR filters has been studied earnestly, little attention has been paid to sound movement with IIR filters, which is important for practical applications of 3-D sound. In this paper, a practical method for sound movement is proposed, which utilizes time-varying IIR filters and variable delay filters. The computational cost for sound movement is reduced by about 50% with the proposed method, compared to conventional low-order FIR implementation. In order to facilitate efficient implementation of 3-D sound movement, tradeoffs between the subjective quality of the output sound and implementation parameters such as the size of filter coefficient database and the update period of filter coefficients are also discussed.

Publication: IEICE TRANSACTIONS on Fundamentals Vol.E90-A No.3 pp.618-625

Publication Date: 2007/03/01

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Online ISSN: 1745-1337

DOI: 10.1093/ietfec/e90-a.3.618

Type of Manuscript: Special Section PAPER (Special Section on Multimedia and Mobile Signal Processing)

Category: Speech/Audio Processing

Authors

Kosuke TSUJINO
Wataru KOBAYASHI
Takao ONOYE
Yukihiro NAKAMURA

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Kosuke TSUJINO, Wataru KOBAYASHI, Takao ONOYE, Yukihiro NAKAMURA, "Efficient 3-D Sound Movement with Time-Varying IIR Filters" in IEICE TRANSACTIONS on Fundamentals, vol. E90-A, no. 3, pp. 618-625, March 2007, doi: 10.1093/ietfec/e90-a.3.618.
Abstract: 3-D sound using head-related transfer functions (HRTFs) is applicable to embedded systems such as portable devices, since it can create spatial sound effect without multichannel transducers. Low-order modeling of HRTF with an IIR filter is effective for the reduction of the computational load required in embedded applications. Although modeling of HRTFs with IIR filters has been studied earnestly, little attention has been paid to sound movement with IIR filters, which is important for practical applications of 3-D sound. In this paper, a practical method for sound movement is proposed, which utilizes time-varying IIR filters and variable delay filters. The computational cost for sound movement is reduced by about 50% with the proposed method, compared to conventional low-order FIR implementation. In order to facilitate efficient implementation of 3-D sound movement, tradeoffs between the subjective quality of the output sound and implementation parameters such as the size of filter coefficient database and the update period of filter coefficients are also discussed.
URL: https://globals.ieice.org/en_transactions/fundamentals/10.1093/ietfec/e90-a.3.618/_p

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@ARTICLE{e90-a_3_618,
author={Kosuke TSUJINO, Wataru KOBAYASHI, Takao ONOYE, Yukihiro NAKAMURA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Efficient 3-D Sound Movement with Time-Varying IIR Filters},
year={2007},
volume={E90-A},
number={3},
pages={618-625},
abstract={3-D sound using head-related transfer functions (HRTFs) is applicable to embedded systems such as portable devices, since it can create spatial sound effect without multichannel transducers. Low-order modeling of HRTF with an IIR filter is effective for the reduction of the computational load required in embedded applications. Although modeling of HRTFs with IIR filters has been studied earnestly, little attention has been paid to sound movement with IIR filters, which is important for practical applications of 3-D sound. In this paper, a practical method for sound movement is proposed, which utilizes time-varying IIR filters and variable delay filters. The computational cost for sound movement is reduced by about 50% with the proposed method, compared to conventional low-order FIR implementation. In order to facilitate efficient implementation of 3-D sound movement, tradeoffs between the subjective quality of the output sound and implementation parameters such as the size of filter coefficient database and the update period of filter coefficients are also discussed.},
keywords={},
doi={10.1093/ietfec/e90-a.3.618},
ISSN={1745-1337},
month={March},}

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TY - JOUR
TI - Efficient 3-D Sound Movement with Time-Varying IIR Filters
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 618
EP - 625
AU - Kosuke TSUJINO
AU - Wataru KOBAYASHI
AU - Takao ONOYE
AU - Yukihiro NAKAMURA
PY - 2007
DO - 10.1093/ietfec/e90-a.3.618
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E90-A
IS - 3
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - March 2007
AB - 3-D sound using head-related transfer functions (HRTFs) is applicable to embedded systems such as portable devices, since it can create spatial sound effect without multichannel transducers. Low-order modeling of HRTF with an IIR filter is effective for the reduction of the computational load required in embedded applications. Although modeling of HRTFs with IIR filters has been studied earnestly, little attention has been paid to sound movement with IIR filters, which is important for practical applications of 3-D sound. In this paper, a practical method for sound movement is proposed, which utilizes time-varying IIR filters and variable delay filters. The computational cost for sound movement is reduced by about 50% with the proposed method, compared to conventional low-order FIR implementation. In order to facilitate efficient implementation of 3-D sound movement, tradeoffs between the subjective quality of the output sound and implementation parameters such as the size of filter coefficient database and the update period of filter coefficients are also discussed.
ER -