JPH037412A - Method of setting equalizing characteristic - Google Patents

Abstract

PURPOSE:To set a desired equalizing characteristic by providing a means which requests the setting of the equalizing characteristic, combines preset equalizing characteristics according to a prescribed combination sequence, generates a new equalizing characteristic based on the combination and inputs it to an equalizer. CONSTITUTION:When a memory scan key MSK is depressed to apply automatic decision of the equalizing characteristic, a combination decision section 5b starts counting to read an equalizing curve EQM for the manufacture setting and an equalizing curve EQU for the user setting relating to the i-th combination from a preset memory 6 and transfers the combination to a working memory 5d. When the two equalizing curves EQM, EQU are read out, an equalizing characteristic decision section 5a adds the two equalizing characteristics equalizing characteristic equalizing characteristic equalizing EQM, EQU for each frequency band to obtain a new equalizing characteristic EQ, which is inputted to an equalizer 1 thereby controlling the gain of an audio signal for each frequency band. Thus, the desired equalizing characteristic is set.

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial Application Field> The present invention relates to a method for setting equalizing characteristics, and particularly to a method for setting equalizing characteristics using preset equalizing characteristics.

<Prior Art> In an audio device, an equalizer controls the gain of an input audio signal for each frequency band (band) based on set equalizing characteristics, and outputs sound with a quality that matches the user's preference. To set equalizing characteristics in such an equalizer, there are two methods: (1) manually operating the up/down keys for each band to set the desired equalizing characteristics, or (2) presetting multiple equalizing characteristics in advance. There is a method in which the desired equalizing characteristics are called up and set using a preset key.

<Problems to be Solved by the Invention> In the method of manually setting equalizing characteristics, the setting operation is troublesome, and there is a problem that the operability is poor, especially in car audio.

On the other hand, the method of presetting the equalizing characteristics has the advantage that predetermined equalizing characteristics can be set with a simple operation. However, the number of preset keys is limited in terms of cost and size, making it impossible to increase the number of preset memories and, therefore, not being able to preset a large number of equalizing characteristics. For this reason, there are many cases where desired equalizing characteristics are not preset, and in such cases, there is a problem in that the equalizing characteristics must be manually set.

In view of the above, an object of the present invention is to provide an equalizing characteristic setting method that can internally generate a large number of equalizing characteristics and select and set a desired equalizing characteristic from among them, even if there are only a few preset equalizing characteristics. It is to be.

Means for Solving the Problems> In the present invention, the above problems are solved by: a means for requesting setting of equalizing characteristics; a combination means for combining preset equalizing characteristics according to a predetermined combination order; and a new method based on the combination. This is achieved by creating equalizing characteristics and inputting them into the equalizer. input into the equalizer until the desired equalizing characteristics are created.
Equalizing characteristics are created according to the above combination order, and the current equalizing characteristics are set in the equalizer according to a setting instruction.

<Embodiment> FIG. 1 is a block diagram of main parts of an in-vehicle audio device according to the present invention. In FIG. 9, 1 is an equalizer that adjusts the sound quality of an audio signal based on predetermined equalizing characteristics, 2 is a spectrum analyzer section, 3 is the amplifier, 4 is the speaker,
Reference numeral 5 designates a microcomputer-configured control section, which includes an equalizing characteristic determining section 5a, a combination determining section 5b that combines preset equalizer characteristics in a predetermined order, and a display control section 5 that displays equalizing characteristics and spectrum analyzer characteristics.
It has a working memory 5d which stores the current equalizing characteristic EQ and the two combined equalizer characteristics EQM and EQU, respectively.

Reference numeral 6 denotes a preset memory, and a storage section 6 stores four equalizing characteristics EQMI to EQM4 set by the manufacturer.
a. It has a storage section 6b that stores four equalizing characteristics EQUI to EQU4 manually set by the user. Four equalizing characteristics EQMI set by the manufacturer
- EQM4 is set according to a predetermined purpose, for example, for vocals, rock, jazz, and Clarasif. In addition, four user-set equalizing characteristics EQUI to EQU4 are also set according to predetermined purposes, such as treble emphasis, bass emphasis, midrange emphasis,
It is set to emphasize the high and low tones.

Reference numeral 7 denotes an operation panel, including a display section 7a that displays equalizing characteristics and spectrum analyzer characteristics, and a key section 7 in which various keys are arranged.
It has b. Examples of keys include a memory scan key MSK that requests automatic setting of equalizing characteristics;
Selection key BSK for selecting a band during manual setting.

Up key U for setting gain in each band
There are PK, down key DNK, etc.

When the memory scan key MSK is pressed and a request for automatic determination of equalizing characteristics is generated, the combination determination unit 5b selects the following combination order only EQMI → EQMI, EQUI → EQMI, EQ
U2→EQMI, EQU3→EQMI, EQU4→E
QUI only → EQM2 only → EQM2. EQUI→EQ
M2. EQU2→EQM2. EQU3→EQA2.
EQU4→EQU2 only 4EQM3(7) only→EQM3
．． EQU1→EQM3. EQU2→EQM3. EQU3
→EQM3. EQU4 → EQU3 only + EQI'+4
(7) Me+EQM4. EQU1+EQM4. EQ
U2→EQ? ! 4. EQU3→EQM4. EQU4→E
The combination is determined only according to QU4. Note that although the above example is a case in which two characteristics are combined, it is also possible to combine three or more characteristics.

The equalizing characteristic determining section 5a calculates the two equalizing characteristics EQM determined by the combining section 5b.

Set the EQU to the frequency band (e.g. 60Hz, 125Hz, 2
50Hz, 500Hz, IKHz, 3.5KHz,
10 KHz) to obtain a new equalizing characteristic EQ, and input the equalizing characteristic EQ to the equalizer 1 to control the gain of the audio signal for each frequency band. As a result, for example, the four equalizing characteristics EQMI to EQM4 set by the manufacturer can be applied to each genre (vocal, rock, etc.).

Set the four equalizing characteristics EQUI to EQU4 to emphasize the treble, emphasize the bass, emphasize the middle, and emphasize the high and low tones according to the user's preference. For example, each characteristic set by a manufacturer depending on the genre of music can be automatically changed according to the user's preference.

Note that in order to obtain a new equalizing characteristic, it is possible to use not only addition but also subtraction, average value, etc.

FIG. 2 is a flowchart of the equalizing characteristic setting process of the present invention, and the overall operation of FIG. 1 will be explained below in accordance with this flowchart.

In order to automatically determine the equalizing characteristics, the memory scan key MSK is pressed (step 101). As a result, the combination determining unit 5b changes from 1 to i and starts counting time (steps 102 and 103). Equalizing curve EQ
M and the equalizing curve EQtl set by the user are read into the working memory 5d (step 104).

When the two equalizing curves EQM and EQU are read out, the equalizing characteristic determination unit 5a adds these two equalizing characteristics EQM and EQU for each frequency band to obtain a new equalizing characteristic EQ (step 105), and calculates the new equalizing characteristic EQ. EQ equalizer 1
The equalizing characteristic EQ is input to the display section 7a to control the gain of the audio signal for each frequency band (step 106), and the display control section 5c inputs the equalizing characteristic EQ to the display section 7a to graphically display the equalizing characteristic (step 1o7).
). Note that a spectrum analyzer may be displayed instead of the equalizing characteristic EQ.

The user listens to the sound corrected by the current equalizing characteristics, confirms the characteristics on the display, and presses the memory scan key MSK if this is acceptable (step 10).
8.1o9).

When the memory/rescan key MSK is pressed, the combination determination section 5b ends the combination processing, and the display control section 5c thereafter performs a spectrum analysis display based on the set equalizing characteristic EQ (step 110).

On the other hand, in step 108, if the current equalizing characteristic is not favorable, a predetermined time has elapsed without the memory scan key MSK being pressed, and in step 111, r
Become YESJ. As a result, the combination determination unit 5b checks whether 1=N (N is the last combination order number) (step 112), and if i<N, i+1→
In step 113), i is incremented by i, and the processes from step 103 onwards are repeated to set the desired equalizing characteristic.

On the other hand, if there is no desired equalizing characteristic in any combination, rYEs
”, and the desired equalizing characteristics are subsequently set by manual operation (step 114). According to the present invention, since there are many combinations, the desired equalizing characteristic is almost always set by one of the combinations.

In the above description, all combinations are scanned and the combinations are sequentially changed from the first combination until the desired equalizing characteristics are set, but the following configuration is also possible.

That is, preset keys M1 to M4 are provided for selecting equalizing characteristics set by the manufacturer.

One preset key Mi (i=1 to 4) is pressed,
After that, only when the memory scan key MSK is pressed, the combinations are changed in the following order EQMi only→E QMi
, E QUI → E QMi, E QU2 → E QM
It can also be configured to change according to i, E QU3→E QMi, E QIJ4. In this way, for example, by pressing a preset key corresponding to the genre, it becomes possible to set the desired equalizing characteristic in a short time.

Further, preset keys U1 to U4 are provided for selecting user-set equalizing characteristics, and the preset keys Ui
(i = 1 to 4) is pressed, and then when the memory scan key MSK is pressed, the combinations are executed in the following order EQLIi only → E QIJi, E QMI → E Q
LIi, E 0M2-* E QUi, E QM:
34 E QLIi, E 0M4.

<Effects of the Invention> According to the present invention, equalizing characteristics preset according to a setting request are combined according to a predetermined combination order, a new equalizing characteristic is created based on the combination, and inputted to the equalizer, thereby achieving desired equalizing. Until the trait is created.

Since the equalizing characteristics are created according to the above combination order and the current equalizing characteristics are set in the equalizer according to the setting instructions, even if there are few preset equalizing characteristics, many equalizing characteristics can be generated internally. However, desired equalizing characteristics can be selected and set from among them, and operability can be improved.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of essential parts of an audio device according to the present invention, and FIG. 2 is a flowchart of equalizing characteristic setting processing according to the present invention. 1. Equalizer, 2. Spectrum analyzer section, 5. Controller section, 5a.. Equalizing characteristic determination section 5b.. Combination determination section 5c.. Display control section 6.. Preset memory.

Claims (1)

[Claims] A plurality of equalizing characteristics are preset in advance,
In an equalizing characteristic setting method for an audio device in which a desired equalizing characteristic is selected and set in an equalizer, equalizing characteristics preset according to a setting request are combined in a predetermined combination order, and a new equalizing characteristic is created based on the combination. into the equalizer until the desired equalizing characteristics are created.
An equalizing characteristic setting method comprising: creating equalizing characteristics according to the combination order, and setting the current equalizing characteristic to an equalizer according to a setting instruction.