Virtual sound source positioning apparatus

Details Virtual sound source positioning apparatus Virtual sound source positioning apparatus

1996-12-13

2000-07-18

Teska, Kevin J.

Electrical audio signal processing systems and devices

Hearing aids, electrical

Specified casing or housing

381 17, H04S 700, H04S 500, G06G 762

Patent

active

060918942

ABSTRACT:
A virtual sound source positioning apparatus includes a channel signal generating section for generating first and second channel signals, a first component signal indicative of a component of the first channel signal, and a second component signal indicative of a component of the second channel signal from an audio input signal, a control section including a low pass filter, for generating a difference signal associated with a difference between the first component signal and the second component signal, filtering the difference signal by the low pass filter to generate a filtered difference signal, and for generating a first audio image control signal from the filtered difference signal and the first channel signal, and a second audio image control signal from the second channel signal and the filtered difference signal, and a sound output section for positioning a virtual sound source in accordance with the first and second audio image control-signals. The difference signal may be generated by multiplying the first and second component signals by predetermined coefficients, and the filtered difference signal may be delayed in accordance with the difference signal transfer paths to the ears of a listener. The first and second channel signals can be generated using two head acoustic transfer functions. In this case, an IIR-type filter is used to generate a direct sound signal and an IIR-type filter and a FIR-type filter connected thereto in series are used to generate a reflection signal.

REFERENCES:
patent: 4356349 (1982-10-01), Robinson
patent: 4980914 (1990-12-01), Kunugi et al.
patent: 5301236 (1994-04-01), Iizuka et al.
patent: 5371799 (1994-12-01), Lowe et al.
patent: 5500900 (1996-03-01), Chen et al.
patent: 5546465 (1996-08-01), Kim
patent: 5572591 (1996-11-01), Numazu et al.
patent: 5604809 (1997-02-01), Tsubonuma
patent: 5742688 (1998-04-01), Ogawa et al.

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