JPH098574A - Sound volume adjusting device - Google Patents

Abstract

PURPOSE: To reduce the necessity of the adjustment of sound volume when a sound source is switched and to improve operability by automatically switching sound volume to proper sound volume when the sound source is switched. CONSTITUTION: A microcomputer 6 detects the operation states of a changeover switch 8 and a sound volume adjusting switch 9, controls an input switch circuit 2 and controls a sound volume adjuster 3. The microcomputer 6 is provided with a sound volume register 10 for outputting instruction data to the sound volume adjuster 3. By writing a sound volume adjusted value in this sound volume register 10, the sound volume adjusted value is outputted to the sound volume adjuster 3 and sound volume is adjusted. The microcomputer 6 performs the writing/reading processing of the sound volume adjusted value for a memory 7. When a reproduction sound source is switched, the reproduced sound volume of the repoduction sound source is adjusted in accordance with the set sound volume value set according to the sound volume adjusted value for the reproduction sound source before the switch is performed and the sound volume adjusted value for a newly selected reproduction sound source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a volume adjusting device for an audio device, and more particularly to a volume adjusting device for performing appropriate volume control for each of a plurality of sound sources.

[0002]

2. Description of the Related Art Conventionally, sound reproducing apparatuses have become more multifunctional, and many sound reproducing apparatuses incorporating a plurality of sound sources, such as a radio, a tape player, and a compact disc (CD) player, have become widespread. FIG. 3 is a configuration diagram showing a configuration of a sound reproducing device having such a plurality of sound sources. A1
An is composed of a plurality of sound sources, such as a radio, a tape player, and a compact disc (CD) player. Reference numeral 12 is an input switching circuit, which is a sound source A1 to A according to a sound source selection operation by the operator.
n is connected to the circuit at the subsequent stage. Reference numeral 13 is a volume controller for adjusting the reproduction volume, which is composed of a variable resistor or the like, and is used for the input switching circuit 1.
The level of the signal from the sound sources A1 to An connected by 2 is adjusted to adjust the reproduction volume from the speaker 15. Reference numeral 14 denotes an amplifier, and sound sources A1 to A whose volume is adjusted by the volume adjuster 13.
The audio signal from n is amplified, output to the speaker 15, and reproduced as audio.

Then, the operator adjusts the volume by operating the operation switch (push button, knob, etc.) of the volume adjuster 13 to obtain a desired volume.

[0004]

However, when the sound source to be reproduced is switched, the difference in the output signal level of the sound source and the difference in the desired volume for each sound source of the listener (for example, the information of the radio or the like is desired to be heard at a high volume). , A CD player, etc., wants to listen to BGM at a low volume, etc.), and it is necessary to adjust the volume each time the sound source is switched, which is troublesome.

The present invention solves such problems.
It is an object of the present invention to realize a volume control device with good operability.

[0006]

In order to solve the above-mentioned problems, the present invention is a volume adjusting device for controlling the reproduction volume of audio signals from a plurality of sound sources, wherein the reproduction source is a sound source being reproduced. An operation unit for performing a volume adjustment operation, a storage unit for storing a volume adjustment value adjusted by the operation unit for each of the plurality of sound sources, and a volume adjustment value storage unit when the reproduced sound source is switched. A volume adjusting device for adjusting a reproduction volume according to a volume adjustment value corresponding to the newly selected reproduction sound source stored in Is adjusted, and the reproduction volume of the reproduction sound source is adjusted according to the set volume value set according to the volume adjustment value for the newly selected reproduction sound source.

Further, the adjusting means gradually changes the reproduction volume according to the volume adjustment value for the reproduction sound source before switching to the reproduction volume according to the set volume value.

[0008]

By the above means, when the playback sound source is switched, the volume adjustment value for the playback sound source before switching and the set volume value set according to the volume adjustment value for the newly selected playback sound source The playback volume of the playback sound source is adjusted according to. Also, the volume of the reproduced sound gradually changes from the reproduction volume according to the volume adjustment value for the reproduction sound source before switching to the reproduction volume according to the set volume value.

[0009]

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram showing a configuration of a sound reproducing device according to an embodiment of the present invention. 1 is a sound source, for example, a radio,
A plurality of sound sources (A1 to An) such as a compact disc (CD) player and a tape player are provided.

Reference numeral 2 denotes an input switching circuit, which connects desired sound sources A1 to An to the volume controller 3 in the subsequent stage by an instruction signal from the microcomputer 6. A volume controller 3 is composed of an electronic volume or the like and is selected by the input switching circuit 2 in accordance with an instruction signal from the microcomputer 6 to attenuate the audio signals from the sound sources A1 to An. An amplifier 4 amplifies the signal from the volume adjuster 3 and outputs it to the speaker 5. And the speaker 5
Converts this signal into voice and outputs it.

Reference numeral 7 is a memory such as a random access memory (RAM), which stores a volume adjustment value for each sound source. 8
Is a selector switch, which is operated when switching the sound sources A1 to An to be reproduced. A volume adjustment switch 9 is operated when adjusting the volume of the reproduced sound output from the speaker 5. 6 is a microcomputer, which detects the operating states of the changeover switch 8 and the volume adjusting switch 9,
The input switching circuit 2 and the volume controller 3 are controlled.
Further, the microcomputer 6 is provided with a volume register 10 for outputting instruction data to the volume adjuster 3, and by writing the volume adjustment value to this volume register 10, the volume adjustment value is stored in the volume adjuster 3. It is output and the volume is adjusted. Further, the microcomputer 6 performs a writing / reading process of a volume adjustment value with respect to the memory 7.

Next, the processing operation performed by the microcomputer 6 will be described with reference to the flowchart of FIG. This process starts when the sound reproducing device is turned on. In step S1, it is determined whether or not the volume adjustment has been performed (whether or not the volume adjustment switch 9 has been operated). If the volume operation has been performed, the process proceeds to step S2. If the volume operation has not been performed, the process proceeds to step S6. Move. In step S2, it is detected whether the volume adjusting switch 9 is operated in the volume increasing (UP) direction. If it is the UP direction, the process proceeds to step S3, and if it is the volume decreasing (DOWN) direction, the process proceeds to step S4.

In step S3, the volume is increased and the process proceeds to step S5. Further, in step S4, the volume is reduced and the process proceeds to step S5. In step S5, the volume setting value VX
The value (stored in the memory of the microcomputer 6 as a value indicating the target volume) is set as the register value VL (the value stored in the volume register 10), and the process proceeds to step S6. In step S6, it is detected whether or not the changeover switch 8 has been operated. If the switch 8 has been operated, the process proceeds to step S7, and if the switch 8 has not been operated, the process proceeds to step S10.

In step S7, the register value VL which is the volume adjustment value corresponding to the sound source before the switching operation is written in the memory 7 and the process proceeds to step S8. Step S8
Then, the volume adjustment value (memory value VM stored in the memory 7 corresponding to the sound source selected by the operation of the changeover switch 8).
m) is read, and the process proceeds to step S9. Step S9
Then, the set value VX is calculated. In this calculation, for example, the set value VX is weighted addition of the memory value VMm and the register value VL, specifically, the calculation as shown by the following equation is performed.

Set value VX = register value VL × 0.2
+ Memory value VMm × 0.8 In step S12, the register value VL is compared with the set value VX, and when the register value VL is large, step S13.
To the step S14 when the register value VL is small. In step S13, the register value VL is decremented by 1, and the process proceeds to step S15. In step S14, the register value VL is incremented by 1, and the process proceeds to step S15. In step S15, the timer (self-running counter) is reset to 0 (reset)
Then, the process returns to step S1.

In step S10, it is determined whether the set value VX and the register value VL are equal,
If they are equal, the process returns to step S1, and if they are not equal, the process proceeds to step S11. In step S11, the value of the timer is compared with the predetermined value X, and if it does not exceed the predetermined value X, the process returns to step S1, and if it exceeds the predetermined value X, the process proceeds to step S12. That is, if the predetermined time has elapsed since the timer was reset in step S15, the process proceeds to step S12, and if not, the process returns to step S1.

By the above processing, the sound sources A1 to An
, The volume stored in correspondence with the selected sound source (past adjusted volume for the selected sound sources A1 to An) and the volume before switching (adjusted volume according to the current situation) The signals from the sound sources A1 to An are reproduced at an appropriate sound volume, and the reproduced sound volume gradually changes from the original sound volume to the target sound volume.

[0018]

As described above in detail, according to the present invention, when the sound source is switched, the sound volume is automatically switched to an appropriate sound volume, so that it is not necessary to adjust the sound volume when the sound source is switched. , Operability is improved.

[Brief description of drawings]

FIG. 1 is a configuration diagram of a sound reproducing device according to an embodiment of the present invention.

FIG. 2 is a flowchart showing a processing operation performed by a microcomputer 6.

FIG. 3 is a configuration diagram showing a configuration of a conventional sound reproducing device.

[Explanation of symbols]

 1 ・ ・ ・ ・ ・ ・ Sound source 2 ・ ・ ・ ・ ・ ・ ・ ・ Input switching circuit 3 ・ ・ ・ ・ ・ ・ Volume controller 4 ・ ・ ・ ・ ・ ・ Amplifier 5 ・ ・ ・・ ・ ・ Speaker 6 ・ ・ ・ ・ ・ ・ Microcomputer 7 ・ ・ ・ ・ ・ ・ ・ ・ Memory

Claims (2)

[Claims] 1. A volume adjusting device for controlling the reproduction volume of audio signals from a plurality of sound sources, comprising: operating means for performing a volume adjusting operation on a reproduction sound source that is a sound source being reproduced; A storage unit that stores a volume adjustment value adjusted by the operating unit for each sound source, and corresponds to the newly selected reproduction sound source stored in the volume adjustment value storage unit when the reproduction sound source is switched. In a volume adjusting device having an adjusting means for adjusting a reproduction volume according to a volume adjusting value, the adjusting means comprises a volume adjusting value for the reproduced sound source before the switching and a volume for a newly selected reproduced sound source. A volume adjusting device for adjusting a reproduction volume of the reproduction sound source according to a set volume value set according to an adjustment value. 2. The adjusting means gradually changes the reproduction volume according to the volume adjustment value for the reproduction sound source before the switching to the reproduction volume according to the set volume value. Item 1. The volume control device according to item 1.