US 2007/0165890 A1Published application

Sound image localization device

AssigneeMatsushita Electric Industrial Co., Ltd.

InventorsKazue Fusakawa, Gempo Ito, Atsunobu Murase

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Abstract

A sound image localization device (10) comprising: band division means (11) for dividing an inputted acoustic signal to a high-band acoustic signal and a low-band acoustic signal; a first filter (12) and a second filter (13) for localizing the high-band acoustic signal; low-band localization means (16) having a third filter (14) and a fourth filter (15) for localizing the low-band acoustic signal; a first adder (17) for adding the output signals of the first filter (12) and the third filter (14), and a second adder (18) for adding the output signals of the second filter (13) and the fourth filter (15). The sound image localization device (10) having such a configuration mitigates the limit of the listening position as compared to the conventional one and enables localization of the sound image in any direction around a listener.

Claims11

Dependent claims

A sound image localization device, comprising:

high-band localization means for localizing a high band sound image constituted by high band sounds equal to or higher in frequency than a predetermined value and outputted from left and right acoustic outputting units arranged so as to generate a sound field having directivity in high band sounds;
and
low-band localization means for localizing a low band sound image constituted by low band sounds lower in frequency than a predetermined value and outputted from said left and right acoustic outputting unit, and in which
said low-band localization means is operative to localize said low band sound image, in accordance with transfer functions respectively indicative of paths from a target position, at which said low band sound image is to be localized, to left and right ears of a listener and transfer functions respectively indicative of paths from said left and right acoustic outputting units to the left and right ears of the listener.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 11/571,940Filed 14 Jul 2004
Priority: JP 2004-21046716 Jul 2004
Published: 19 Jul 2007
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

H04S 1/002
Two-channel systems: non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution
H04R 5/04
Stereophonic arrangements: circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker…
H04R 2499/11
General applications: transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
H04S 2400/01
Details of stereophonic systems covered by H04S but not provided for in its groups: multi-channel, i.e. more than two input channels, sound…