JPH01300700A - Sound field variable device - Google Patents

Abstract

PURPOSE:To move freely a sound image synchronously with the movement of a coordinate on a pattern in the two-dimension or three-dimension sound field space by allowing a listener itself no input the sound image movement in a listening room in real time. CONSTITUTION:The relation of coordinates between the listening room on the reduced pattern and the actual listening room is coincident one to one to each other, and the listener inputs a desired sound image position on a reduced listening room displayed on a coordinate display means 6 by using a coordinate input means 5 while moving the position in real time. Simultaneously, the coordinate inputted in real time by the coordinate display means 6 is displayed continuously. Each ROM 8 to which a selector is made correspondent definitely in response to each sound image coordinate inputted in real time is selected. Thus, optional sound image movement is attained and the effect of sound image movement is improved.

Description

[Detailed Description of the Invention] Industrial Application Field The present invention enables continuous sound image movement to any two-dimensional or three-dimensional position in real time in synchronization with the movement of coordinates on the screen. It is a sound field variable device.

BACKGROUND OF THE INVENTION In recent years, the digitalization of the audio field, along with hardware and software such as CDs and CATs, has been remarkable. Furthermore, in recent years, the need for digital sound field variable devices that can freely control the sound field has been rapidly increasing.

The configuration of a conventional sound field variable device will be described below with reference to the drawings.

FIG. 3 shows the configuration of a conventional sound field variable device. In FIG. 3, 1 is an input means for inputting an audio signal, 2 is a group of variable resistors that change the resistance value in a uniquely defined relationship, 3 is an amplifier, and 4 is a speaker.

The operation of the conventional sound field variable device configured as described above will be described below.

The audio signal inputted by the input means 1 is inputted to the variable resistor group 2 having N resistors (four in Fig. 3), and is attenuated according to the respective resistance value, and the output level is adjusted. Get different audio signals. Each audio signal that has passed through the variable resistor is output from a speaker 4 through an amplifier 3. With such a configuration, it was possible to move the sound image.

Problems to be Solved by the Invention However, the above configuration method has the problem that it is difficult for the listener to move the sound image as desired because there is no visual effect, and the effect is low. Ta.

In view of the above problems, the present invention provides a sound field variable device that can enhance the effect of sound image movement by visually realizing the sound image movement desired by the listener.

Means for Solving the Problems In order to solve this object, the sound field variable device of the present invention is constructed as follows.

A coordinate input means for inputting a sound image position in a listening room in real time, a display means for continuously displaying the coordinates, a storage means uniquely associated with the input coordinates, and an audio signal input means. an input means for inputting;
It is composed of a signal processing section that processes the output level data of each speaker stored in the storage means and the input audio signal, and an output means that outputs the signal processing result obtained by the signal processing section. .

Arbitrary movement of the sound image becomes possible by providing a coordinate input means for manually inputting the active sound image position in real time, and a storage means uniquely associated with the coordinates input in real time. Furthermore, by providing a display means that continuously displays the coordinates input in real time in synchronization with the movement of the sound image, it becomes possible to easily and visually realize the effect of moving the sound image in real time.

EXAMPLE An example of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention.

In FIG. 1, 5 is a coordinate input means, 6 is a coordinate display means, 7 is an audio signal input means, and 8 is a storage means (hereinafter referred to as
9 is a selector, 10 is a signal processing section,
11 is a digital/analog converter (hereinafter referred to as a D/A converter), 12 is an amplifier, and 13 is a speaker.

The operation of the sound field variable device configured as described above will be explained below.

In FIG. 1, first, the coordinate display means 6 displays a reduced shape of the beam snoring room.

In other words, there is a one-to-one coordinate relationship between the reduced viewing room on the screen and the actual viewing room. Then, the listener inputs the desired sound image position using the coordinate input means 5 while moving the position displayed on the coordinate display means or at the top of the reduced listening room in real time. At the same time, the coordinates input in real time are continuously displayed by the coordinate display means 6 (for example, A→B
→C is displayed. ) The selector 9 selects each ROM uniquely associated with each sound image position coordinate inputted in real time.

This ROM stores output level data for each speaker. Further, the signal input by the audio signal input means 7 is processed by the signal processing unit 10 with the data in the selected ROM, and the signal processing result is converted into an analog signal by the D/A converter 11.

The converted analog signal is passed through an amplifier 12,
It is output from the speaker 13. As a result, the output level of each speaker is different, and the sound image moves continuously from A゛→B゛→C° in synchronization with the movement of the coordinates on the screen (A → B-C) in the actual listening room. I will do it.

As described above, by having the listener input the movement of the sound image in the listening room in real time, the sound image can be moved freely in 2D or 3D sound field space in synchronization with the movement of the coordinates on the screen. I can do it.

Furthermore, as shown in FIG. 2, random number generation means 15 can be provided before the coordinate input means. This random number generating means is for randomly outputting the coordinates of the sound image position in the sound room or reduced on the screen. This makes it possible to move the sound image randomly, regardless of the listener's intention.

By providing a coordinate input means for moving and inputting the sound effect image position in real time, and a storage means uniquely associated with the coordinates input in real time, arbitrary movement of the sound image becomes possible. Furthermore, by providing a display means that continuously displays coordinates input in real time in synchronization with sound image movement, it becomes possible to easily and visually enhance the effect of real time sound image movement.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of a sound field variable device which is an embodiment of the present invention, FIG. 2 is a block diagram of a sound field variable device which is another embodiment of the present invention, and FIG. 3 is a block diagram of a conventional sound field variable device. FIG. 2 is a block diagram of a variable device. 5... Coordinate input means, 6... Coordinate display means, 7... Audio signal input means, 8...
...Storage means, 9...Selector, 10.
... Signal processing unit, 11 ... D/A converter, 12 ... Amplifier, 13 ... Speaker, 15 ... Random number generation means .

Claims (1)

[Claims] a coordinate input means for inputting a sound image position in a listening room in real time; a display means for continuously displaying a reduced view of the listening room and the coordinates input in real time from the coordinate input means; storage means storing output level data in one-to-one correspondence with coordinates; input means for inputting an audio signal; and signal processing of the data stored in the storage means and the audio signal. A sound field variable device comprising: a signal processing section; and an output means for outputting a signal processing result obtained by the signal processing section.