JPH0279506A - Electronic graphic equalizer - Google Patents

Abstract

PURPOSE:To rewrite plural kinds of equalizer patterns freely and to call them by storing them in the initial state after application of power and operating a pattern changeover means and a manual adjusting means. CONSTITUTION:After application of power at first, several kinds of patterns such as genre of Jazz and Rock are set in a ROM 11. In the case of rewriting a pattern, one of pattern changeover buttons 1 is depressed to call a desired pattern from the ROM 11. Then an equalizer quantity adjusting button 2 and a frequency changeover button 3 are depressed to adjust the called pattern. Then the pattern changeover button is depressed to write the pattern into an area of a RAM 10 corresponding to the button. Then the same pattern changeover button is depressed, then the adjusted pattern is called from the RAm 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an electronic graphic equalizer (hereinafter abbreviated as electronic EQ) in which several types of stored equalizer patterns can be rewritten.

[Summary of the Invention] An electronic EQ capable of storing several types of equalizer patterns is provided with pattern switching means and manual adjustment means, and these means can easily recall and rewrite the above-mentioned patterns. There is.

[Prior Art] The initial state of an electronic EQ that can store several types of user-favorite equalizer patterns is usually a default state (a state of ±OdB at each frequency), which is very convenient in that it allows free sound creation. .

FIG. 4(a) is a block diagram showing the configuration of such a conventional electronic EQ. In the figure, 1 is a pattern switching button, 2 is an equalizer amount increase/decrease button, 3 is a frequency switching button, and 5 is a block diagram showing the configuration of such a conventional electronic EQ.
is the memory enable button.

6 is a memory button, 8 is a display, 9 is a CPU consisting of, for example, a microcomputer, and 10 is a RAM.

, 11 is a ROM, 12 is an EQ circuit, and 13 is an input.

14 represents the output, and the CPU 9 stores the ROM as described below.
Or change the frequency characteristics of the EQ circuit 12 according to the equalizer pattern read from the RAM.

Also, the pattern stored in the ROM or RAM is rewritten. The initial state of the equalizer pattern after the power is turned on can be selected and recalled using the pattern switching button 1. To change its contents, turn on button 1 or the corresponding memory button 6 to recall the desired pattern, then press the frequency switching button. Select the frequency you want to change with 3, adjust the boost and cut amount with increase/decrease button 2, turn on memory enable button 5, and turn on memory button 6 to write to the corresponding area of RAM 10.

Through such operations, the user can freely store a favorite pattern set as described above in each area of the RAM 10.

FIG. 5(a) is a flowchart showing the operation of the apparatus shown in FIG. 4(a).

FIG. 4(b) is a block diagram showing a conventional fixed electronic EQ. Since the equalizer characteristics are fixed, no RAM is provided. The ROM 11 contains patterns such as those shown in FIGS. 6 and 7, for example. The pattern in the ROM 11 can be recalled by pressing the pattern switching button 1. 51!1(b) is a flowchart showing the operation of the apparatus of FIG. 4(b).

[Problems to be Solved by the Invention] However, with the above configuration, it is troublesome to increase or decrease the intensity of each frequency by operating the memory button and memory enable button. It is dangerous to perform such operations. Furthermore, the memory button and memory enable button must be provided on the panel surface, which is disadvantageous in terms of space.

On the other hand, fixed electronic EQs have several types of equalizer patterns determined in advance and are easy to operate, but the sound may not be to your liking, and the equalizer effect may vary depending on the vehicle.

[Object of the Invention] An object of the present invention is to provide an electronic equalizer in which several types of equalizer patterns are stored in advance, the patterns can be adjusted by simple manual operation, and space for button arrangement on the pattern surface can be saved. That's true.

[Means for Solving the Problems] In order to achieve the above object, an electronic graphic equalizer according to the present invention includes a first storage means for storing a plurality of frequency pattern data, and a first storage means for storing a plurality of frequency pattern data, each of which corresponds to the plurality of frequency pattern data. a manual adjustment means for adjusting the frequency pattern of the equalizer circuit;
a second storage means having a storage area corresponding to each of the plurality of pattern switching means, and storing frequency pattern data of the equalizer circuit in the second storage means based on a predetermined operation of the plurality of pattern switching means. , based on other predetermined operations of the plurality of pattern switching means,
If data is stored in the storage area of the second storage means corresponding to the operated pattern switching means, the data is recalled.

If the frequency pattern data is not stored, the control circuit includes a control circuit that reads the frequency pattern data from the storage area of the first storage means corresponding to the operated pattern switching means. .

[Function] Several types of equalizer patterns are stored in the initial state after the power is turned on, and these patterns can be freely rewritten and recalled by simple operation of the pattern switching means and manual adjustment means.

[Examples] The present invention will be explained in more detail below using Examples with reference to the drawings, but these are merely illustrative and various modifications and improvements can be made without going beyond the scope of the present invention. Of course it is possible.

FIG. 1 is a block diagram showing the configuration of an embodiment of an electronic equalizer according to the present invention. In the figure, reference numbers common to those in FIG. 4 represent the same or corresponding parts as in FIG. 4 represents a frequency display, and 7 represents a reset button. As is clear from the figure, the conventional memory enable button and memory button are not provided.

ROM area and RAM in one pattern switching button
It corresponds to the area. If there is data in RA and Mlo, call the data from RAM10 and write it to RAM1.
If there is no data in 0, call it from ROM11. The reset button 7 is installed on the operation panel or the back of the device.

The operation of the above embodiment will be explained below.

For example, suppose that the electronic EQ circuit 12 uses a 7-element equalizer, and the points for each frequency that can be increased or decreased are 1251.
(z, 250 soil, 500 soil, lk soil.

Assuming 3 kl (z, l Ok) Iz, when the pattern shown in Figure 6 is selected, the bass range may be too muffled depending on the type of speaker, mounting position, and vehicle.
In that case, it may be better to lower 125H2, 250l-If a little. This is similar to adjusting an ordinary electronic EQ. After turning on the power for the first time, several patterns (for example, JAZZ, ROCK,
Patterns are set in ROMII for each genre such as POPS, CLASSIC, etc.) using the pattern switching button 1.
You can select and recall the contents using , and you can freely rewrite the contents.

That is, in the case of pattern rewriting, turn on one of the pattern switching buttons 1 to call up the desired pattern from the ROMII, press the equalizer amount increase/decrease button 2 and the frequency switching button 3 to adjust the called pattern, and then repeat the above procedure. - By turning on one pattern switching button, data is written to the area of RAM 10 corresponding to the button. Thereafter, by turning on the next pattern switching button, the adjusted pattern can be recalled from RAM II. The rewritten pattern will not return to the initial state pattern and will be stored, for example, unless all power supplies are turned off or the reset button 7 is pressed.

As mentioned above, after adjusting the frequency pattern, data is written to the corresponding RAM 10 only when the same pattern switching button is pressed. Therefore, in this example, when the frequency pattern is adjusted directly from the DEFFAT state, the pattern is not stored. .

Note that whether or not data has been written in the RAM 10 corresponding to each button is appropriately notified by lighting up the display corresponding to the button or changing the display color.

FIG. 2 is a flowchart showing the above operation, and FIG. 3 is a flowchart showing the operation according to another embodiment. In this embodiment, pattern switching button 1
Measure the suppression time with the timer in CP tJ Q, and if it is less than the reference value (0.5 seconds in the flowchart), RA
When data is called from Ml0 or ROMII and suppression continues to exceed the reference value, the current frequency pattern is written in the area of RAMl0 corresponding to the pressed pattern switching button.

This overcomes the drawbacks of the embodiment of FIG.
Even when adjusting from the AT state, the adjusted pattern data can be written into the RAM 10.

In the first embodiment, pressing the reset button 7 cleared the entire RAM10, but by clearing the contents of the corresponding RAM area for each pattern switching button, a new problem can be overcome. .

[Effects of the Invention] As explained above, according to the present invention, it is possible to obtain an electronic EQ with characteristics between a fixed type equalizer and a normal equalizer, and improve operability by reducing the number of operation buttons on the panel surface. There is also the advantage that space can be saved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the configuration of an electronic EQ according to the present invention, FIG. 2 is a flowchart showing the operation of the device shown in FIG. 1 according to the first embodiment, and FIG. 4 is a block diagram showing the configuration of a conventional electronic EQ, and FIG. 5 is a flowchart showing the operation of the device shown in FIG.
A flowchart showing the operation of the device shown in the figure, and FIGS. 6 and 7 are frequency characteristic diagrams showing examples of fixed equalizer patterns. 1... Pattern switching button, 2...
・・・・・・Equalizer amount increase/decrease button, 3・・・・・・
...Frequency switching button, 4... Frequency display, 8... Display, 9...
...CPU, 10...RAM, 11
・・・・・・・・・ROM, 12・・・・・・・・・E
Q circuit, 13... Input. 14......Output. 1: Ha 0 turn Sagan port - Tan 2: Iko 2 Ibu 1 increase no anti Netan 3: Zhu no Iri 1 ko Thu ° evening / 4'P7 IJl friend view show 7: Soset Thu - Tanden JEQ7 ° °Ω Link factor Figure 1 Conventional power JE 0.7” lock 2 (a) 4th EQ re°゛aa engine) Figure 4 Figure 4 (a) Neo installation operation with + l Fu T7 Kano Chart (a)! Saku Gofusu Claw - Meng Yard (b), Fig. 5

Claims (1)

[Claims] (a) first storage means for storing a plurality of frequency pattern data; (b) pattern switching means corresponding to each of the plurality of frequency pattern data; (c) a first storage means for storing a plurality of frequency pattern data; (c) a first storage means for storing a plurality of frequency pattern data; (d) a second storage means having a storage area corresponding to each of the plurality of pattern switching means; Storing the frequency pattern data of the equalizer circuit in a storage means, (e_2) Based on another predetermined operation of the plurality of pattern switching means, storing the frequency pattern data of the second storage means corresponding to the operated pattern switching means. (e_3) If the data is stored, the control circuit calls the frequency pattern data from the storage area of the first storage means corresponding to the operated pattern switching means. An electronic graphic equalizer featuring