Electrical audio signal processing systems and devices – Binaural and stereophonic – Pseudo stereophonic
Patent
1996-08-21
2000-02-08
Harvey, Minsun Oh
Electrical audio signal processing systems and devices
Binaural and stereophonic
Pseudo stereophonic
H04R 500
Patent
active
060235128
ABSTRACT:
To provide a three-dimensional acoustic effect to a listener in a reproduction field, via a headphone in particular, a three-dimensional acoustic apparatus is formed by a linear synthesis filter having filter coefficients that are the linear predictive coefficients obtained by performing a linear predictive analysis on an impulse response which represents the acoustic characteristics to be added to the original signal to achieve this effect. By passing the signal through this acoustic characteristics adding filter, the desired acoustic characteristics are added to the original signal, and by dividing the power spectrum of the impulse response of these acoustic characteristics into critical bandwidths and performing this linear predictive analysis based on impulse signal determined based from power spectrum signals representing the signal sound of each of these critical bandwidths, the filter coefficients of the linear synthesis filter are determined.
REFERENCES:
patent: 5715317 (1998-02-01), Nakazawa
Kawaura et al., "Discussion on Factors of Sound Image Localization Control for Reception and Reproduction by Headphone," Acoustical Society of Japan (ASJ) Speech Collection No. 2-3-7, Mar. 1986, pp. 247-248.
Hayashi, S., "Reproduction of Sound Field by Headphone and Subjective Assessment Thereof," ASJ Speech Collection No. 1-8-17, Mar. 1989, pp. 253-354.
Takabayashi et al., "Control of Two Reception Points in Room by Real-Time Convolution System," ASJ Speech Collection No. 2-7-17, Mar. 1990, pp. 445-446.
Shimodaira et al., "Fundamental Discussion on New OSS Reproduction Method Using Ear Speaker," ASJ Speech Collection No. 1-7-2, Mar. 1991, pp. 373-374.
Haneda et al., "Common Poles and Modeling of Head-Related Transfer Functions Independent of Direction of Propagation of Sound," ASJ Speech Collection No. 1-8-5, Oct. 1991, pp. 483-484.
Yoshida et al., "New OSS Reproduction Method Using Ear Speakers," ASJ Speech Collection No. 1-8-7, Oct. 1991, pp. 487-488.
Okada et al., "Implementation of Transaural Network in Live Room Using Real-Time Convolution System," ASJ Speech Collection No. 1-2-17, Oct. 1991, pp. 757-758.
Koizumi, N., "Realization of Shared Acoustic Environment in Communication System," ASJ Speech Collection No. 2-5-11, Mar. 1992, pp. 477-478.
Majima et al., "Three-Dimensional Stereophonic Recording Method (RSS) Using Two Channels," ASJ Speech Collection No. 2-5-13, Mar. 1992, pp. 481-482.
Yoshida et al., "Discussion on New OSS Reproduction System Using Ear Speakers," ASJ Speech Collection No. 2-5-14, Mar. 1992, pp. 483-484.
Shimada et al., "Method of Stereophonic Sound Reproduction with Localization of Sound Image Outside Head Using Earphones," ASJ Speech Collection No. 2-5-15, Mar. 1992, pp. 485-486.
Shimada et al., "Study on Clustering of Transfer Function Permitting Localization of Sound Outside Head," ASJ Speech Collection No. 1-9-7, Mar. 1993, pp. 379-380.
Iida et al., "Method of Symmetrical Sound Image Localization Using Shuffler Filter," ASJ Speech Collection No. 1-5-19, Oct. 1993, pp. 485-486.
Takahashi et al., "Study of Model of Head Related Transfer Functions," ASJ Speech Collection No. 1-9-25, Mar. 1994, pp. 471-472.
Matsuo Naoshi
Suzuki Kaori
Fujitsu Limited
Harvey Minsun Oh
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