JPH0472798U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the electrical configuration of an in-vehicle sound reproducing device 1 according to an embodiment of the present invention, FIG. 2 is a block diagram showing the specific configuration of crosstalk generation circuits C1 and C1a, and FIG. Sound image control circuit U1-U
FIG. 4 is a plan view showing the spread of the sound field of the basic sound and the sound field of effect sounds according to the present invention. FIG. 5 is a plan view for explaining the conventional technology. It is. 1... Vehicle-mounted sound reproduction device, 2... Vehicle interior, 3...
...driver's seat, 4...passenger seat, 3a...listener, 11
...Acoustic signal source, 17...Sound effect creation circuit, AL
, AR, ALa, ARa...attenuator, C1 to C3
, C1a to C3a...crosstalk generation circuit, P
R, PLa, PRa... Phase shifter, SL, SR...
Speaker, U1 to U3, U1a to U3a... Sound image control circuit.

Amendment 3/10/29 The title of the invention is amended as follows. Title of the invention: Sound field expansion control device The scope of the claim for utility model registration is amended as follows.

[Claims for Utility Model Registration] (1) An acoustic signal source that outputs an acoustic signal of a fundamental sound; and a multi-channel system that corrects at least one of the phase and level of the acoustic signal of the fundamental tone from the acoustic signal source. a basic sound adjusting means for forming an output of the sound effect; a sound effect creating means for creating a sound effect sound signal by processing the sound signal of the fundamental sound from the sound signal source; and a sound effect from the sound effect creating means. sound effect adjustment means for correcting at least one of the phase and level of the acoustic signal of the basic sound adjustment means to form outputs of multiple channels; A sound field expansion control device characterized in that the outputs of each channel are added together and outputted from a common speaker for each channel. (2) an acoustic signal source that outputs acoustic signals of fundamental sounds of both left and right channels; and a fundamental sound adjustment means that corrects and outputs at least one of the phase and level of the acoustic signals of fundamental sounds of both left and right channels; , a sound effect generating means for calculating and processing the acoustic signals of the fundamental sounds of both the left and right channels from the acoustic signal source to generate the acoustic signals of the sound effects of the left and right channels; sound effect adjustment means for correcting and outputting at least one of the phase and the level; the output of each left and right channel from the basic sound adjustment means; the output of each left and right channel from the corresponding sound effect adjustment means; A sound field expansion control device characterized in that the sound field expansion control device adds up each of the left and right channels and outputs the results from a common speaker for each left and right channel. (3) The basic sound adjustment means and the sound effect adjustment means include a delay device that delays the basic sound or sound effect sound signal of each of the left and right channels and outputs the delayed sound signal to the speaker of each of the left and right channels; 3. The sound field expansion device according to claim 2, further comprising phase level correction means for performing phase correction and level correction on the acoustic signals of the basic sound or the sound effects, respectively, and outputting the corrected signals to the speakers of the right and left channels. Control device. (4) Claims 1 to 3 are characterized in that a filter that generates waves in a predetermined frequency band is interposed before the basic sound adjustment means and the sound effect adjustment means.
The sound field expansion control device according to at least one of the above.

Claims (1)

[Claims for Utility Model Registration] Left and right speakers arranged at different directional angles in front of the left and right sides of a listening position, and an acoustic signal of the fundamental sound of the left channel is output to the left speaker. , an acoustic signal source that outputs an acoustic signal of the fundamental sound of the right channel to the right speaker; and an acoustic signal source that corrects at least one of the phase and level of the acoustic signal of the fundamental tone of each left and right channel, and outputs the corrected sound signal to the right and left speakers, respectively. a basic sound adjustment means for calculating the basic sound sound signals of both the left and right channels from the sound signal source to create sound effect sound signals of the left and right channels, and output the sound signals to the left and right speakers, respectively. and sound effect adjusting means for correcting at least one of the phase and level of the acoustic signal of the sound effect in each of the left and right channels, and outputting the corrected sound effect to the right and left speakers, respectively. Asymmetric sound field correction device.