JPS63267006A - Acoustic equipment with equalizer - Google Patents

Abstract

PURPOSE:To facilitate the key switch operation and to decrease the number of key switches to enlarge the size of a display section by using a key switch for sound volume adjustment in common use with a key switch for setting each band level. CONSTITUTION:The sound volume adjustment mode is reached in depressing once a sound volume adjusting function display section 10 and an indication 'VOL' is blinked and the sound volume is increased/decreased by depressing a key switch 7q or 7r of an up/down display section 12. In depressing a key switch 5c, the equalizer mode is attained, and a key switch 7a is turned on by depressing a part corresponding to a display 63, and a column corresponding to '63Hz' of a characteristic display section 9 is blinked. In depressing the key switch 7q or 7r of the up-down display section 12, the level of the '63Hz' of an equalizer is changed and the display of the characteristic display section 9 is also changed over. Since it is not required to provide a key switch for exclusive use for the equalizer in such a way, the ease of operation is attained and the display section is made larger.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an audio device equipped with an equalizer.

2. Description of the Related Art Audio devices equipped with an equalizer that adjusts the quality of reproduced sound by adjusting the level of each frequency band have been known. In addition to key switches for controlling the audio equipment, these conventional audio devices also include key switches for selecting each frequency band of the multiple pan-do-pass filters that make up the equalizer, and for adjusting the level of the selected frequency band. A key switch was added.

Problems to be Solved by the Invention The conventional audio equipment equipped with an equalizer as described above,
Since a dedicated key switch for the equalizer is added, the number of key switches increases, and the operation part for each key switch becomes small, making it difficult to operate.Also, the area of the display part becomes smaller, making it difficult to display contents. There was a problem that made it hard to see.

The present invention solves the above-mentioned conventional problems and provides an audio device with an equalizer that is easy to operate and can have a large display section.

Means for Solving the Problems In order to achieve the above object, the present invention provides mode selection means for selecting a volume level adjustment mode and an equalizer characteristic adjustment mode, and one of a plurality of bandpass filters constituting the equalizer. The frequency band selection means selects a frequency band, and the level adjustment means adjusts the level of the bandpass filter of the equalizer in accordance with the operation of an up or down key switch for increasing or decreasing the volume in the equalizer characteristic adjustment mode.

Operation The present invention has the above-mentioned configuration, in which the volume can be adjusted by operating the up and down key switches in the volume level adjustment mode, and the equalizer can be adjusted by operating the up and down key switches in the equalizer characteristic adjustment mode. It is possible to increase or decrease the level of the bandpass filter that constitutes the .

Embodiment FIG. 2 shows an in-vehicle audio device (
This shows the front of the integrated device (radio receiver and cassette deck). In Fig. 2, 1 is the main body of the device, 2 is a power switch, a is a dust cover provided in the cassette insertion slot so that it can be opened and closed, 4 is an eject button for ejecting the inserted cassette, 5a w 5 bl 5 C are key switches, for example, the key switch 5b is for switching whether to display the time or the received frequency on the display section (described later), and the key switch 6C is for displaying equalizer characteristics on the characteristic display section (described later). This is for displaying and switching to equalizer characteristic adjustment mode. Reference numeral 6 denotes a function display section 6 for displaying operable functions, and on the front surface of this function display section 6, a plurality of key switches 7a to 7m made of transparent electrodes are arranged, as shown in FIG. There is.

Note that FIG. 2 shows an example of the display in the radio mode, and FIG. 3 shows an example of the display in the cassette deck mode. 8
r-20 dBJ is displayed on the display section which displays the reception frequency, time, direction of travel of the cassette deck, AM/FM, preset channel number, etc. Reference numeral 12 denotes an up/down display section for displaying an increase or decrease in volume, and key switches 7q and 7r are arranged on this display section 12 as shown in FIG. 4. The key switch 7q is for increasing the volume, and the key switch 7r is for decreasing the volume.

FIG. 1 shows the configuration of the above embodiment. In FIG. 1, 20 is an electronic tuner, 21 is a cassette deck, 2
2 is an analog switch, and this analog switch 2
2 selects either the audio signal output from the electronic tuner 20 or the audio signal output from the cassette deck 21, and is a control signal output from the cassette deck 21 when a cassette is inserted into the cassette deck 21. As a result, the analog switch 22 is switched to the cassette deck 21 side, and a control signal generated when a cassette is ejected from the cassette deck 21 causes the analog switch 22 to be switched to the electronic tuner 20 side. 23 is a band pass filter group, and this band pass filter group 2
a is a characteristic display section whose center frequency is 9 which displays spectrum characteristics and equalizer characteristics, and a key switch 7n is arranged in this characteristic display section 9 as shown in FIG. By operating the characteristic display section 9, the display on the characteristic display section 9 is alternately switched between the subek)/l/ characteristic display and the equalizer characteristic display. 10 is a volume adjustment function display section that displays the volume adjustment function; l'-VOLJ flashes in the volume adjustment mode, rBALJ flashes in the left/right volume balance adjustment mode, and "" appears in the front/rear volume adjustment mode.
FADJ flashes.

As shown in FIG. 4, this volume adjustment function display section 10 is provided with a key switch 7o for mode switching, and by operating this key switch 7o, the volume adjustment mode and the left/right volume balance adjustment mode are selected. , the front and rear volume adjustment modes are switched sequentially. Reference numeral 11 denotes a Vbe μ attenuation display section, and a key switch 7p is disposed in this level attenuation display section 11 as shown in FIG.
By manipulating , the reproduced signal can be attenuated by 20 dB. In addition, when attenuating by 20dB, it is 63Hz.
, 125Hz, 250Hz, 500Hz.

It is composed of bandpass filters 11 to f7 of I KHz, 3.5 KHz, and 10 KHz. The output of this bandpass filter f,~17 is used for displaying the spectral characteristics. Reference numerals 24R and 24L represent bandpass filter groups constituting equalizers for the right channel and left channel, respectively, and these bandpass filter groups 24R and 24L each consist of a plurality of bandpass filters 11 to 17 having different center frequencies. There is. 25
R and 25L are "electronic volume groups" that constitute equalizers for the right channel and left channel, respectively, and these electronic volume groups 25R and 25L are a plurality of electronic police-AVRIs that adjust the output level of the band pass group 24R and 224L. ~ Consists of VR7.26R92
Reference numeral 6L denotes an analog switch constituting a defeat switch for the right channel 1 and the left channel, respectively, and by switching these analog switches 26R and 28L, an acoustic signal can be output directly through the equalizer. 27F is the front signal FR of the right and left channels, an electronic volume for adjusting the FL level, 27R is the rear signal R of the right and left channels.
This is an electronic volume for adjusting the R and RL levels.

28F is a power amplifier that amplifies the previous signals FR and FL;
8R is a power amplifier that amplifies the rear signals RR and RL. The front signals FR and FL amplified by the power amplifier 28F are applied to speakers 29FR and 29FL placed on the front right and left sides of the vehicle interior of the automobile, respectively, and the signals RR and RL after being amplified by the power amplifier 28R are Speakers 29RR and 29R are placed on the right and left sides of the rear of the vehicle interior, respectively.
applied to L. 30 is an operation section, and this operation section 30
are key switches 6a to 5c in FIG.

Consists of 7a to 7r. 31 is a display section, and this display section 31 is similar to the function display section 6 and the display section 8 in FIG.
, a characteristic display section 9, a volume adjustment function display section 10, a level attenuation display section 11, and an up/down display section 12.

32 is a driver that drives the display section 31.

3a is the electronic tuner 20, cassette deck 21, electronic volume 25R, 25L, and analog switch 26R.
, 26L, electronic volume 27F.

27R, central processing unit CPU that controls the driver 32
The functions of this CPO 33 will be explained below. 34 is a key processing means, and this key processing means 34 determines the key switch operated by the operation unit 30, changes or updates the data stored in the storage means 36, and also controls the timing control means a6. Send key determination results. Timing control means a6 determines the timing of various operations according to the key discrimination result, and controls storage control means 37, device selection control means 38, display control means 39, and deck control means 40. The storage control means 37 is a storage means a.
Specify the address for writing data to or reading data from 5. The storage means a6 includes data for controlling the electronic tuner 20, data for controlling the cassette deck 21, and data for equalizer control (electronic volumes 25R, 25L, analog switches 26R, 26L).
.

data for controlling the electronic volumes 27F and 271, and data for controlling the driver 32 are stored. The device selection control means 38
is the device (electronic tuner 20, equalizer electronic volume 25R, 2) to which data is to be transferred from the CPU 33.
Specify SL, analog switches 26R, 26L, electronic volume 27F, 27R, driver 32).

The data read from the storage means 35 is transmitted to the electronic tuner 20, equalizer (electronic volume 25R,
2SL), electronic volumes 27F and 27R, and the driver 32.

The data for controlling the cassette deck is stored in the deck control means 4.
0 to the cassette deck 21. 43 is a timer for managing the time of the timing control means 36, and 44 is A for A/D converting the output of the bandpass filter group 2a.
/D conversion means, and the data converted by this A/D conversion means 44 is transferred to the driver 32 via the display control means 39, serial interface 41, and interface 42.

Next, an outline of the operation of the above embodiment will be explained.

Turn power switch 2 to O with no cassette inserted.
When N is selected, the mode becomes radio mode, and the display shown in FIG. 2 appears. In FIG. 2, when you press the part displayed on the function display section 6, for example, the FMJ display section, the corresponding key switch (key switch 7a in FIG. 4) is turned on, FM broadcast is received, and the display section "FM" is displayed at 8, and the receiving frequency is also displayed. Further, the characteristic display section 9 displays the level of each frequency band of the acoustic signal (nuvector characteristic display). Also, if you operate the ``'l'' UNEJ part of the display and press key switch 7d or 7f, you can select a channel.If you press key switch 7dfi or 71 for a short time, it will be manual tuning, and if you press key switch 7dfi or 71 for a short time, it will be manual tuning. Automatic tuning will be performed if the
; rsJ * rsJ * When one of the key switches 7h to 7m corresponding to "6" is pressed, the preset station is received. In FIG. 2, the acoustic adjustment function display section 1
Press 0 once to enter volume adjustment mode, and "vOL" flashes. In this state, press the key switch 7q or 7! of the up/down display section 12. Press the electronic volume 27F
, 27R, and the volume increases or decreases.

When the key switch 5C is pressed in the state shown in FIG. 2, the equalizer mode is entered and the display is changed to the one shown in FIG. 6. In FIG. 6, for example, if the part corresponding to the display "6a" is pressed, the key switch 7a is turned on, and the characteristic display section 906 is turned on.
The column corresponding to 3Hz blinks. Here, if the key switch 7q or 7x of the up/down display section 12 is pressed, the 63Hz level of the equalizer is changed, and the characteristic display section 9
The display can also be changed. Similarly, you can adjust the levels of other frequency bands. After the adjustment, for example, if the display "1" part is pressed for a long time (for example, 2 seconds or more), the adjusted equalizer characteristic is stored in the storage means a6. In addition, when the display "1" part is pressed for a short time, the stored equalizer characteristic data is read out, this data is set in the electronic volumes 25R and 25L, and the characteristic display section 9 corresponds to the set equalizer characteristic. The display can be changed to the one shown below.

In the radio mode, when a cassette is inserted, the mode becomes the cassette deck mode, and the display is switched to the one shown in FIG. When the key switches 7a to 7m corresponding to each function displayed on the predetermined function display section 6 are operated, deck control corresponding to the display is performed.

Further, in the radio mode or the cassette deck mode, when the key switch 7n disposed in the characteristic display section 9 is operated, the subscale characteristic display and the equalizer characteristic display are alternately switched.

Next, the volume adjustment function will be explained.

In radio mode or cassette deck mode, when the volume adjustment function display section 10 is pressed once, the key processing means 34
The volume adjustment function request is determined by the timing control means 3.
6 outputs a timing signal for volume adjustment mode. The storage control means 37 operates according to this timing signal, and sends data for blinking [VOLJ] of the volume adjustment function display section 10 to the driver 32, and the current volume data stored in the storage means 36 is read out and the electronic volume control unit 37 is operated. 27F and 27H, and further, volume display data corresponding to the current volume data is set in the driver 32, and the volume is displayed in a stepped manner on the characteristic display section 9, as shown in FIG. Here, when the up-down display unit 12 is operated and the key switch 7q or 7x is pressed, the volume data and volume display data in the storage means 3s are updated according to the number of key operations, and this updated volume data is The electronic volumes 27L and 27H are set to increase or decrease the volume, and the updated volume display data is set to the driver 32, and the display on the characteristic display section 9 changes to FIG.
It is changed as shown in B. Also, if you press the display "1" part in Fig. 6 for a long time (for example, 2 seconds or more),
The currently set volume data is stored in the storage means a6. Similarly, change the volume further and display r'2J.

By operating 3J and r4J, different volume data can be stored in the storage means 35.
Display ``When one of IJ, r2J, r3J, r4J is operated for a short time, the stored volume data is read out from the storage means 35, and the electronic volume 27F, 2
7H, the volume is changed, and the characteristics display section 9
The display in is also changed.

Next, the left and right volume parannu adjustment mode will be explained. In the radio mode or the cassette deck mode, when the volume adjustment function display section 10 is operated and the key switch 7o is pressed twice, the timing control means 36 outputs a timing signal for the left and right volume balance adjustment mode. The storage control means 37 operates according to this timing signal, and sends data for blinking [BALJ] on the volume adjustment function display section 10 to the driver 32, and the storage means 35 is controlled by the storage control means 37 to display the currently stored data. The left/right volume balance data and the front/rear volume puff data (fader control data) are read out, and the electronic volume 27F is read out.
, 27H, and further, left/right volume balance display data and fader control display data corresponding to the current left/right volume balance data and fader control data are set in the driver 32, and as shown in FIG. At the same time, a cross-shaped display section is displayed, and a vertical line section 45 indicating the current left/right volume balance position is blinked. Here, when the up/down display unit 12 is operated and the key switch 7q or 7r is pressed, the left/right volume balance data and the left/right volume balance display data in the storage means 35 are updated according to the number of key operations, and the updated left/right volume balance data is updated. The volume balance data is electronic volume 27F.

27R, the left/right volume balance is changed, and the updated left/right volume balance display data is set in the driver 32, and the vertical line part 46 of the characteristic display section 9 moves leftward or rightward based on the changed data. move in the direction.

Here, if the display "1" part in FIG. 8 is pressed for a long time (for example, 2 seconds or more), the currently set left/right volume balance data is stored in the storage means 36. Similarly, by changing the left/right volume balance and operating the display "2", "3", or "4", different left/right volume balance data can be stored in the storage means 35, and the display rlJ .

Next, adjust the front and rear volume balance (fader control) V
) mode is explained. In the radio mode or deck mode, when the volume adjustment function display section 10 is operated and the key switch To is pressed three times, the timing control means a6
outputs the timing signal for fader control mode. The storage control means a7 operates according to this timing signal, reads data for blinking "FAD" on the volume adjustment function display section 10 from the storage means 35, and outputs the data to the driver 3.
At the same time, the current fader control data and left/right volume balance data are read out and set on the electronic volumes 27F and 27H, and display data corresponding to the current fader control data and left/right volume balance data is set on the driver 32. As shown in FIG. 9, a cross-shaped display is displayed on the characteristic display section 9, and a horizontal line section 46 indicating the current seven-worker control position is made to blink. If you operate the up/down display section 12 and press the key switch 7q or 7r, the front/rear volume balance will be changed, and the horizontal line section 46 of the characteristic display section 9 will move upward or downward based on the changed data. to display that the front/rear volume balance has been changed.

Note that in the same way as writing and reading data in the left and right volume balance adjustment mode, fader control data can also be written and read in the fader control mode.

As described above, according to this embodiment, the key switches 7q and 7r for increasing and decreasing the volume can also be used as key switches for setting each band level in the equalizer mode.

Effects of the Invention According to the present invention, a key switch for volume adjustment can also be used as a key switch for setting each band level of an equalizer.
Since the number of key switches is reduced, it is possible to enlarge the display area, making it easier to see the displayed contents, and it is also possible to increase the area of each key switch, making it easier to operate the key switches. It is.

[Brief explanation of the drawing]

FIG. 1 is a block diagram of an audio device according to an embodiment of the present invention, FIGS. 2 and 3 are front views of the same device, FIG. 4 is a diagram showing the arrangement of key switches of the device, and FIG. 6 , 6th
This figure is a front view of the same device, FIGS. 7A and 7B are diagrams showing the volume display pattern of the same device, and FIGS. 8 and 9 are front views of the same device. 1...Device body, 2...Power switch, 3...Dust cover, 4...Eject button, 5a-6c...Key Switch, 6...
...Function 1 display section, 7a to 7r... Group key switch, 8 ... Display section, 9 ... Characteristics display section, 10 ... Volume adjustment function Display section, 11...
... Level attenuation display section, 12 ... Up-down display section, 20 ... Electronic changer, 21 ...
...Cassette deck, 22...Analog switch, 23.Old...Band banuffy group, 24L, 2
4R...Mountain band pass filter group, 25L, 25R
...Electronic volume! , 26L, 26R...
...Analog switch, 27F, 27R...
・Electronic volume, 28F. 28R...Power amplifier, 29FR, 29FL
.

Claims (1)

[Claims] An electronic volume for adjusting the sound signal level, an up/down key switch for increasing or decreasing the volume, an equalizer for adjusting the equalizer characteristics, and a mode selection means for selecting the volume level adjustment mode and the equalizer characteristics adjustment mode. and frequency band selection means for selecting one of the plurality of bandpass filters constituting the equalizer, and each bandpass filter of the equalizer in accordance with the operation of the up and down key switches in the equalizer characteristic adjustment mode. and a level adjustment means for adjusting the level of the sound.