JPH062336Y2 - Audio equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a reproduction output level control device for an audio device, and more particularly to an audio device equipped with a sounding means that operates for a predetermined time when an operation button is pressed.

(Prior Art) A so-called volume control as a means for controlling the audio output of a reproducing apparatus has conventionally used a variable resistor, but is now being replaced by an electronic volume.

The electronic volume can be constructed, for example, by numerically controlling the resistance value with a presetter counter, and the preset sound input level can be obtained by setting the preset input to a desired numerical value.

Since this electronic volume cannot confirm the setting position when setting the volume like the rotation angle of the variable resistor, it is possible to display the set value normally with numbers or with a bar graph. To be

Further, not only the electronic volume but also many operating mechanisms of audio equipment are provided with a piezoelectric buzzer for generating a notification sound at the time of operation.

(Problems to be solved by the invention) By the way, as an electronic volume attached to a vehicle-mounted reproducing device, a device that displays a reproduction output level on a display panel in a bar graph is widely used.
The operation button of the volume is operated by looking at this bar graph display.

However, the operation of adjusting the volume of the playback device while looking at the display panel while driving the vehicle is not preferable from the viewpoint of safe driving.

In addition, even in household audio equipment, the bar graph display may be difficult to see when changing the setting value of the volume with a remote controller or the like.

Some conventional products mute the audio output while adjusting the volume.Unknowingly, the volume level becomes too high, and you may be surprised by the loud sound output when muting is released, causing unexpected errors. There was also.

In devices equipped with a piezoelectric buzzer, buzzer output is performed according to the number of times the operation button is pressed, so it is possible to aurally know the amount of change in the volume level by counting the buzzer output. The volume was generally kept low, making it difficult to hear.

In view of the above circumstances, the present invention controls the notification sound output from the piezoelectric buzzer when the button is operated to generate the notification sound of a volume corresponding to the volume level of the playback device, thereby changing the notification sound level. An object of the present invention is to provide an audio device that can be perceived and can judge the volume setting level of the playback device.

(Means for Solving Problems) In order to achieve the above object, in the audio device of the present invention, the audio output level is changed, a plurality of push button switches, and a predetermined time operation is performed when the plurality of push button switches are pressed. Sounding means for controlling the output level of the sounding means in accordance with the output level of the sound output level varying means.

(Operation) In the audio device of the present invention, the sound output level changing means is controlled by pressing the operation push button for adjusting the sound output level of the reproducing apparatus, and the sound generating means is controlled by the signal of the level changing control. A notification sound of a volume corresponding to the output level is output for a predetermined time.

Embodiment An embodiment of the present invention will be described below with reference to the drawings.

1 and 2 are configuration diagrams of an embodiment of the present invention. FIG. 1 is a block diagram, and FIG. 2 is a block diagram of essential parts.

In the figure, 10 is a reproducing apparatus including a radio receiver, a tape player, a CD player, etc., and a reproducing output line 11 thereof.
The audio output signal of is controlled by the electronic volume 12, is set to a desired level, is amplified by an amplifier (not shown), and drives the speaker 14.

The electronic regulator 12 is composed of, for example, a presettable up / down counter and a variable resistance element, and is connected in series to the reproduction output line 11 according to the operation of the up button and the down button of the various operation buttons 18. The output signal level of the reproducing apparatus 10 is changed by numerically controlling the resistance value of 1., and at the same time when the resistance value is changed, the sound generation control signal 13 of binary code is sent to the sound generation control unit 20.

Reference numeral 16 denotes a microcomputer, which controls each function of the reproducing apparatus 10 based on the operation of various operation buttons 18 of the audio device, and outputs a volume control signal 17 for controlling the electronic volume 12.

Reference numeral 18 is an operation button provided on the operation panel of the audio equipment, and preset switches 1, 2, ... N, which constitute a plurality of push buttons,
An up switch, a down switch, etc. are provided, and the up down switch is used for the purpose of continuously increasing or decreasing the output level of the reproducing apparatus 10.

Next, 20 indicates the operation of various operation buttons 18 of the audio device,
A pronunciation control unit for outputting a notification sound, for example, the second
As shown in the figure, the sound generation control unit 20 is a buzzer control unit 2.
0a, variable resistance element 20b, and buzzer drive circuit 20c
Composed of.

The buzzer control circuit 20a includes a counter, and a clock signal 19 of a predetermined time length input from the microcomputer 16 and a sound generation control signal 1 input from the electronic volume 12.
Based on 3, the resistance value of the variable resistance element 20b provided in series with the drive circuit 20c is controlled to control the buzzer drive circuit 20c.
Is configured to vary the output voltage level of the.

Note that, regardless of the operation of the electronic volume 12, the sound generation control unit 20 drives the piezoelectric buzzer 22 for a predetermined time, for example, 0.5 seconds, and outputs a "beep" sound each time the operation button of the audio device is pressed.

Next, the operation of the present invention will be described.

The audio device is turned on, and the various operation buttons 18 are operated to output the audio signal 15 to the speaker 14.

At this time, the electronic volume 12 is the control signal 1 output from the microcomputer 16 having a backup battery.
7, the audio signal output level adjusted last time is set, and the speaker 14 is driven at this level.

If you want to readjust the playback output level, press the operation button 1
The up / down switch 8 is operated to obtain a desired audio output level.

When the up / down operation button is operated, the binary code is temporarily increased or decreased in proportion to the pressing condition (number of times, time) of the button, and the output is fixed to the code when the pressing is released. It

The electronic volume 12 changes the resistance value of the variable resistance element connected in series to the reproduction output line 11 based on the control signal 17 to set the reproduction level of the signal circuit.

The control signal when the electronic volume 12 is set to the desired resistance value is the sound generation control signal 13 and the sound generation control unit 20.
Sent to.

The tone generation control unit 20 receives the control signal 13 and the clock signal 1 having a predetermined time length, which is input from the microcomputer 16.
9, the resistance value of the variable resistance element 20b connected in series to the buzzer drive circuit 20c is changed to change the resistance value of the variable resistance element 20b.
A voltage corresponding to the set level of the audio signal circuit is generated at the output b, and the piezoelectric buzzer 22 is driven for a predetermined time.

Therefore, when the operation button 18 is operated, the reproduction level of the audio signal circuit is set to a desired level, and the piezoelectric buzzer 22 outputs a notification sound of a volume corresponding to the reproduction level.

(Effects) As described above, according to the audio device of the present invention, the audio output level varying means, the plurality of push button switches, and the sounding means that operates for a predetermined time when the plurality of push button switches are pressed, Since the control means for controlling the output level of the sounding means in correspondence with the output level of the sound output level varying means is provided, when the sound output level is set to a desired level by operating the push switch, the sounding means outputs sound. A notification sound of a volume corresponding to the output level is output.

Therefore, when the operator presses the operation button, the operator can perceive the reproduction output level based on the loudness of the notification sound output from the sounding means.

Therefore, according to the present invention, an expensive bar graph display device can be omitted, the cost of the audio equipment can be significantly reduced, and the volume of the playback device can be audibly recognized and adjusted by the notification sound. Therefore, it has an excellent effect that it contributes to the safe driving, especially in a vehicle.

[Brief description of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 1 is a block diagram of an audio device, and FIG. 2 is a block diagram of essential parts of an electronic volume. 10 ... Reproduction device, 12 ... Electronic volume, 16 ... Microcomputer 18 ... Operation button, 20 ... Sound control part.

Claims (1)

[Scope of utility model registration request] 1. A plurality of push button switches, an audio output level changing means which is changed by pressing the plurality of push button switches, and a sound generating means which operates for a predetermined time when the plurality of push button switches are pressed, and the output of the sound generating means. An audio device comprising a control means for controlling the level in accordance with the output level of the audio output level varying means.