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Noise sensitive volume control device, audio device and noise sensitive volume control method

A volume control and noise technology, applied in the direction of automatic tone/bandwidth control, gain control, amplification control, etc., can solve the problem of not being suitable for both use, and achieve the effect of ensuring safety, reducing volume, and eliminating jitter

Inactive Publication Date: 2007-02-14
FUJITSU GENERAL LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In addition, in the technology previously disclosed by the applicant of the present invention, it is described that a speedometer (speed information) and a microphone (noise information) are used as driving condition detection means, but it is not proposed to use these in combination to provide various Concrete plan of the most suitable music for the driving situation

Method used

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  • Noise sensitive volume control device, audio device and noise sensitive volume control method
  • Noise sensitive volume control device, audio device and noise sensitive volume control method
  • Noise sensitive volume control device, audio device and noise sensitive volume control method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0087] Speed ​​information detected by the speed sensor 1 is input to the microcomputer 7 . The microcomputer 7 determines the correction amount (first correction amount) by referring to the vehicle speed correction table 14a. The determination of the correction amount (second correction amount) with reference to the vehicle speed correction table 14 a by the microcomputer 7 corresponds to the processing performed by the first correction amount determination unit. In addition, the noise information detected by the noise detection microphone 2 is input to the microcomputer 7 . The microcomputer 7 determines the correction amount (second correction amount) by referring to the noise correction table 14b. The determination of the correction amount (second correction amount) by the microcomputer 7 with reference to the noise correction table 14 b corresponds to the processing performed by the second correction amount determination unit. In addition, the vehicle speed correction t...

Embodiment 2

[0119] This embodiment is an embodiment of volume control when it is determined that the deceleration range is large. That is, in addition to the above-described Embodiment 1 (the first to sixth volume controls), the microcomputer 7 compares the current vehicle speed (speed information) with the past vehicle speed (reference speed information) stored in the memory 8, When the past vehicle speed is greater than the current vehicle speed, and the difference between the past vehicle speed and the current vehicle speed is large, it is judged that the deceleration range is large, and it is judged that the noise reduction amount is also large, so the correction amount The vehicle speed correction amount is applied.

[0120] The speed information is the speed at the detection time detected by the speed information detection unit. The speed information is the current vehicle speed, and the reference speed information is the speed stored in the memory 8, which is the relative past veh...

Embodiment 3

[0160] The present embodiment is volume control when it is judged that the magnitude of acceleration is large. That is, in addition to the above-mentioned Embodiment 1 (1st to 6th volume control) and Embodiment 2 (7th to 15th volume control), the microcomputer 7 also stores the current vehicle speed (speed information) and memory 8 Compared with the past vehicle speed (reference speed information), and when the current vehicle speed is greater than the past vehicle speed, and the difference between the current vehicle speed and the past vehicle speed is large, it is determined that the acceleration range is large, Accordingly, it is judged that the increase amount of noise is also large, so the correction amount is adopted as the vehicle speed correction amount.

[0161]Here, the speed information is the speed at the detection time detected by the speed information detection unit. Assuming that the speed information is the current vehicle speed, the reference speed informatio...

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Abstract

The invention provides a noise-sensitive volume controller and noise-sensitive volume control method for automatically correcting a reproduction sound volume in accordance with speed information and noise information in an audio system on a vehicle.Noise information is acquired by a noise detecting microphone 2, speed information is acquired by a speed sensor 1 etc, and these items of information are inputted to a microcomputer 7. The microcomputer 7 reads a program 13 stored in a memory 8, and calculates a final correction quantity according to an instruction of the program 13. The microcomputer 7 judges whether to apply a correction quantity based on the noise information or the correction quantity based on the speed information or to increment and decrement these two types of correction quantities. Accordingly, an optimal played-back volume corresponding to a traveling condition can be outputted.

Description

technical field [0001] The present invention relates to a noise-sensing volume control device, an audio device, and a noise-sensing volume control method for automatically correcting a reproduction volume based on speed information and noise information. Background technique [0002] Conventionally, in driving a vehicle, manual operations have been performed to make the volume of audio played on the vehicle easy to hear in response to changes in sound (noise) that occur in various situations. However, it is required to concentrate on driving to enable safe driving, and manual volume adjustment cannot ensure safe driving. In order to solve this problem, the development of devices that automatically adjust the volume of audio played on the vehicle has been actively developed. However, the noise during driving often changes with various conditions such as the speed of the vehicle and road surface conditions. Therefore, in order to provide comfortable music in the car, it is re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03G3/32H03G5/16H03G7/00
CPCH03F3/181H03F2200/321H03F3/68H03F1/26H03F2200/03
Inventor 松井英树中石信一富田裕二
Owner FUJITSU GENERAL LTD
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