Acoustical Science and Technology
Online ISSN : 1347-5177
Print ISSN : 1346-3969
ISSN-L : 0369-4232
PAPER
A method of interpolating binaural impulse responses for moving sound images
Matsumoto MitsuoTohyama MikioYanagawa Hirofumi
著者情報
ジャーナル フリー

2003 年 24 巻 5 号 p. 284-292

詳細
抄録
Previously introduced method of interpolating binaural implse responses and algorithm to simulate a moving sound image were evaluated objectively. The method interpolates the responses taking into account the arrival time difference due to changes in the direction of a moving sound source. For the angular interval of 15°, the average of the SDR values of our method, 23 dB was larger than that of the simple method, 9.9 dB. The variances of the SDR values showed our method interpolated the responses more independently of the azimuths of the sound source than the simple method. The responses interpolated using our method changed smoothly as the source direction changed. We have evaluated the algorithm by comparing a moving sound image simulated using the algorithm with an actual moving sound image recorded using a rotating dummy head and with a moving sound image simulated using a conventional method. The spectrogram of the binaural signal of the moving sound image, and no ripples were seen.
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© 2003 by The Acoustical Society of Japan
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