JPH02112099U - - Google Patents

Description

[Brief explanation of drawings]

FIG. 1 shows an embodiment of this invention, and is a block diagram showing a specific example of the sound field processor 38 shown in FIG. FIG. 2 is a diagram showing an outline of an in-vehicle audio device to which this invention is applied. FIG. 3 is a block diagram showing a specific example of the digital signal processing device 8 of FIG. 2. As shown in FIG. Fourth
3 is a block diagram showing a specific example of the graphic equalizer 32 of FIG. FIG. 5 is a diagram showing the basic characteristics of the graphic equalizer 32 of FIG. 4. FIG. 6 is a block diagram showing a specific example of the compressor 34 of FIG. 3. 7 to 9 are diagrams showing various characteristic examples of the compressor shown in FIG. 6. FIG. 10 is a diagram showing an example of a virtual sound source distribution used for generating reflected sound and reflected sound parameters in one direction obtained from this virtual sound source distribution. FIG. 11 is a block diagram showing a specific example of the early reflection sound generator 112 of FIG. Figures 12-14
Each figure is a block diagram showing a conventional device. 18...Digital signal processing device, 22...Automobile, 23...Vehicle interior, 24-27...Speaker, 29...
Input line (input supply means), 39... Output line (supply route), 8, 40... D/A converter, 112
, 126... Sound field reproduction sound generation means, 112... Early reflection sound generator, 126... Reverberation generator, 128, 13
0,136,138...addition circuit, 140,142
...Delay circuit.

Amendment 1.5.29 Hei 1. The brief description of the drawing is amended as follows. In the fourth line of page 21 of the specification, "FIGS. 7 to 9 are" is corrected to "FIGS. 7 to 9 are."

Claims (1)

[Scope of Claim for Utility Model Registration] Speaker reproduction means disposed at front left and right positions and rear left and right positions in a vehicle, input supply means for supplying left and right two-channel source signals in digital signal format, and the input source signals and Sound field reproduction sound generating means for generating sound field reproduction sound components in the front left and right directions and the rear left and right directions for a certain sound field by calculation with sound field reproduction parameters for the front left and right and rear left and right directions, respectively; an adding means for respectively adding the front left and right sound field reproduction sound components generated by the sound field reproduction sound generation means and the front left and right two channel source signals; and a signal corresponding to each of the left and right channel signals and the sound field reproduction sound generation means. an adding means for respectively adding the rear left and right sound field reproduction sound components generated by the adding means, and D/A converting the front left and right and rear left and right signals output from each of the adding means and supplying the same to the speaker reproduction means. An in-vehicle sound field control device comprising: a supply path for controlling;