JPS6360700A - Acoustic effect device - Google Patents

Abstract

PURPOSE:To delay acoustic static data in digital way and to prevent an influence from a field, etc., by storing the acoustic image static data of the field, corresponding to every segment, in a map memory which is arranged in a two-dimensional arrangement, and selecting said segment by a coordinate input device. CONSTITUTION:A input from the coordinate input device 11 of a sound effect device is given to the X and the Y counting means 13 and 14 of a microcomputer 12 respectively, and the output of them is given to a matrix coding means 15. The output of said means 15 is given to the map memory 17 as its address, and executes an access to the lower address of the memory 17 successively based on the timing from a timing generation circuit 18. The each datum of the segment selected by the memory 17 is latched by latches 19-22, And is processed by a digital type sound delay units 23 and 25 and by a digital type sound volume control units 24 and 26 respectively, and the control of a delay and of a volume control is given to a latching signal inputted in input terminals 27 and 29.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a sound effect device used for localizing effects of sound images in halls and the like.

BACKGROUND OF THE INVENTION Conventionally, this type of sound effect device consists of a digital sound delay device, a digitally controlled volume adjustment device, and a correlation data or calculation device based on the relationship between the delay time and the volume level. Sound image localization was achieved by an operator operating a coordinate input device.

FIG. 6 is a schematic block diagram of a conventional sound effect device,
1 is a coordinate input device whose X output (a) and Y output (b) are connected to an arithmetic device 2. The output of the arithmetic unit 2 (cld,
e, f) are each connected to a digital acoustic delay device 3.4 and a digitally controlled volume adjustment device 5.6.

Further, the Lch input terminal 7 is connected to the digital acoustic delay device 3.
, and its output is connected to a digitally controlled sound adjustment device 5, and its output is connected to an Lch output terminal 8.

The Rch input terminal 9 is also connected to the digital acoustic delay device 4 and the digitally controlled volume adjustment device 6, as well as the Ich, and is also connected to the Rch output terminal 10.

Next, the operation of the above conventional example will be described with reference to Fig. 7. Fig. 7 shows the relationship between the volume level and delay time, which is called the Haas effect. Figure 8 shows the relationship between sound image localization.The Lch and Rch signals are connected to the Lch input terminal 7.
, Rch input ε; 1] 1 child 9 (Z input. Here,
The operator operates the coordinate input device l to
A direction signal a and a Y direction signal S are obtained. The relationship between these a and b signals is determined by the arithmetic unit 2 based on the Haas effect relationship shown in FIG. 8 (or the relational calculation formula shown in the same figure). and obtain the same volume level data e. , =h, etc. control the delay amount of the digital acoustic delay device 3.4 and the volume level of the digitally controlled volume delay device 5.6. In this way, each input signal of Lch and Rch is controlled respectively, and the Lch output terminal 8 and the Rch output terminal 1
Output to 0.

The above-mentioned toothpick can also be used with the conventional sound 8147 effect device as well as the calculation device 2.
By devising the calculation contents, the sound image localization effect can be improved by
I was able to do something.

Problems to be Solved by the Invention However, in the conventional sound effect device described above, in order to obtain a sound image localization effect, the arithmetic circuit performs calculations based on a function obtained from the Haas effect relational expression. There were problems such as the problem that the sound image localization effect was not clear depending on the installation location of the device and the listening point, and the problem that the control of the sound image localization was very critical.

The present invention solves these conventional problems,
The object of the present invention is to provide an excellent sound effect device that can easily control sound image localization.

Means for Solving the Problems In order to achieve the above objects, the present invention provides a digital sound delay device, a digitally controlled sound adjustment device, a coordinate input device, an X counter means, and a Y counter means. In addition, a matrix encoding means, a mapping memory, and a timing generator are installed, and the sound image localization is not performed from the relational expression from the Haas effect, but from the actual data obtained by changing the volume and delay time in the secondary memory. The data group is mapped to a coordinate input device and the data group is selected using a coordinate input device.

Effects The present invention has the following effects due to the above configuration. That is, the operator sets the delay time and volume level in advance using the coordinate input device, delay control switch, and level control switch so that the sound image is localized to the desired location. This is done in all areas of the map memory (2) at all corresponding locations.The delay data and sound +11 data at each location obtained in this way are stored in the map memory, and it is possible to select any one of these memories. Then, data for localization corresponding to that position (2) is given to a digital sound delay device and a digitally controlled volume adjustment device, so that the sound image is located at a certain position (a certain position) corresponding to the selected map memory.Therefore, the present invention According to this method, it is possible to directly localize a sound image to a desired location by operating a coordinate input device.

Embodiment FIG. 1 shows the configuration of an embodiment of the present invention. In FIG. 1, reference numeral 11 denotes a coordinate input device, which is connected to 14 X counter stages 13 and Y count means 14 in a microcomputer 12.

The outputs of the X count means 13 and the Y count means 14 are input to the matrix encode means 15, and the output thereof is connected to the address control line of the map memory 17. On the other hand, the address control line of the map memory 17 is connected to a timing generator 18. Map memory 17
The data line is connected to the data sending means 16 in the microcomputer 12, and the Lch delay data line 19, the Lch volume level data line 20, and the Rc
It is connected to the h delay data latch 21 and the Rch sound i+t level data latch 22. The output of each of these launches is sent from the Lch day clutch 19 to the Lch digital sound delay device 23, and to the Lch sound volume level data flag f2.
0 to Lch digital III volume control device 24,
The Rch delay data ratte 21 is connected to the Rch digital sound delay device 25 , and the Rch volume level data ratte 22 is connected to the Rch digitally controlled volume adjuster 26 . Further, 27 is an Lch input terminal connected to the Lch digital acoustic delay device 23, and its output is connected to the Lch digital control type volume adjustment device 24, and its output is connected to the Lch digital sound delay device 23.
It is connected to the channel output terminal 28. Similarly, the Rch input terminal 29 is connected to the Rch digital acoustic delay device 25 , the output of which is connected to the Rch digitally controlled volume control device 26 , the output of which is connected to the Rch output terminal 30 .

Furthermore, for data setting, each data is connected to a map memory 17 by a data setting means 16.

Next, the operation of the above embodiment will be explained. FIG. 2 shows an example of dividing a field for storing each data and performing sound image localization. Further, FIG. 3 shows the configuration of the map memory. FIG. 4 shows a specific arrangement of map addresses. Further, FIG. 5 shows a flowchart for each means in the above embodiment.

In the above embodiment, it is assumed that the field for performing sound image localization is divided into n and m areas as shown in FIG. 2, and that areas based on the combination of n and m are accessed.

By operating the coordinate input device 11, the outputs in the X and Y directions are sent to the X counting means 13 and Y
It is input to the counting means 14. At this time, it is assumed that the X-direction division constant n has already been given to the C register by Sl. Input the X-direction pulse by S2, and
3 realizes X direction counting. As a result, the X-direction count data is subjected to an operation of 4X+1 in S4 and S5, and is stored in the D register in S6. On the other hand, a Y-direction pulse is input in S7, and a Y-direction count is realized in S8. As a result, by S9, S10, and S11, 4
)'(n+1), and in S12, the sum of the previous calculation results in the X direction is calculated, and M=(4x+1) +4'
Data is generated as a map memory address of /(n+1).

Also, since the address length and capacity of the map memory are finite, an over (under) flow is detected in S13, and if there is an over (under) flow, S1
The address data is fixed at the maximum or minimum value in step 5, outputted to the map memory in step S14, and set to 82 in step S16.
Hesiyanbu and repeat this step. This is shown in Figure 3 (
As shown in Figure 2, the map memory is unified, and the memory addresses are arranged in order. In addition, by selecting a segment of one map memory, four types of data (Lch delay data, Lc
h level data, Rch delay data, and Rch level data) are selected at the same time. Furthermore, because of the memory address configuration as described above, if the area division shown in FIG. 2 is performed, the map memory will have an address configuration as shown in FIG. 4 for the division. Therefore, as long as the starting address of each segment can be accessed, the selection of the area for sound image localization and the selection of the segment of the map memory are the same.

The segment address data obtained by the above means etc. is given as an address in the map memory 17. On the other hand, the timing generator 18 generates data blocks (Lch data, Lch level data, Rch
The lower address of the map memory is accessed at a timing such that delay data, 1% chLz bell data) are accessed in sequence.

With such a combination, each data of the selected segment in the map memory is transferred to the Lch delay data latch 19.
, Lch volume level data launch 20, Rch delay data latte 21, and Rch volume level data latch 22, and the respective outputs are Lch digital sound delay device 23, Lch digital control volume adjustment device 24,
The signal is applied to the Rch digital sound delay device 25 and the Rch digital control volume adjustment device 26, and is controlled according to the data. As a result, the Lch signal input to the Lch input terminal 27 is subjected to delay and volume adjustment control, and is output to the Lch output terminal 28. Similarly, Rch is 29 R
The signal is input to the channel input terminal, subjected to delay and volume adjustment control, and output to the Rch output terminal 30.

The above is a case where sound image localization data is already stored in the map memory 17.According to the present invention, LchS
It is necessary to obtain the delay data and level data of each Rch from fields such as actual holes and store them in the map memory 17. Therefore, the data setting means 16 is used as means for setting the field data.

This means uses an external switch or the like to control the Lch digital sound delay device 23, the Lch digital control type volume adjustment device 24, the Rch digital sound delay device 25, and the Rch digital sound delay device 23.
Data can be written directly (1!f) to the channel digitally controlled volume adjustment device 26 and the map memory 17.

As described above, according to the above embodiment, since a segment of the map memory is directly selected by the coordinate input device 11, if the data in the segment is correct, the sound image localization corresponding to the accessed segment can always be obtained.

Also, such a method (from two, what size,
Since it is possible to input data corresponding to changes in the listening point, it is easy to obtain effects such as moving the sound image, and it can respond to quick operations by the operator. In addition, the hardware configuration is simple and has the advantage of being realized at low cost.

Further, according to the present invention, the field can be divided arbitrarily, so that a finer sound image localization effect can be obtained.

Other embodiments will be described.

The capacity M of the map memory 17 can be expressed as M=nXmX4, but if it is desired to increase the amount of data per segment, p can be set to an arbitrary number by changing 4 in the above equation to p. At that time, the map memory access method is address M: M(address) = (px +
1) + pV (n + 1), and the memory capacity should be M=nXmXI).

As another embodiment, it is possible to replace 11 to 12 in the system schematic diagram shown in FIG. 1 with a personal computer or the like to achieve the same effect as this embodiment.

Effects of the Invention As is clear from the above embodiments, the present invention stores sound image localization data in an actual field corresponding to each segment in advance in a map memory arranged in a two-dimensional manner. By selecting data using the coordinate input device, the data that realizes sound image localization is given to the digital acoustic delay device and digitally controlled volume adjustment device to perform sound image localization, so the effect can be obtained regardless of field conditions. It has the advantage of

Furthermore, since no complicated calculations are performed, it has the advantage of being able to respond quickly to the movement of the sound image. Also, by having multiple map memories, you can select the map memory according to the scene.
Moreover, it has the advantage that these systems can be realized at low cost.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an acoustic effect device according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of area division for a memory map in the same embodiment, and FIG.
Fig. 4 is a diagram showing the allocation of real addresses in each segment, Fig. 5 is a flow chart of the procedure within the microcomputer, Fig. 6 is a block diagram of a conventional sound effects device, and Fig. 7 is a diagram showing the allocation of real addresses in each segment. The figure is a diagram showing the relationship between the amount of delay and the volume level for obtaining the Haas effect, and FIG. 8 is a diagram showing the relationship between sound image localization when the Haas effect is used. 11°゛・Coordinate input device, 12...Microcomputer, 13...X count means, 14.Y count means, 15...Matrix encode means, 16...
・Data setting means, 17... Map memory, 18.
...Timing generator, 19-22...Latch, 2
3.25...Digital acoustic delay device, 24, 26
...Digital control type volume adjustment device, 27.29...
・Input terminal, 28.30... Output terminal. Name of agent: Patent attorney Toshio Nakao (1st person)
Figure 2 Figure 3

Claims (1)

[Claims] two sets of digital sound delay devices, two sets of digitally controlled volume adjustment devices, a latch that provides delay data and volume level data to each of the devices, a coordinate input device that controls a sound image localization position, and a coordinate input device. A counting means for counting the output of the device in the X and Y directions, a matrix encoding means for converting the counted data in the X and Y directions into a form that can be accessed in memory, and a data memory accessed by the matrix encoded signal. and a timing generator that generates a memory cyclic access signal, and a sound effect device that localizes a sound image to an arbitrary position by operating a coordinate input device.