CN111610947A - Vehicle-mounted end conversation volume automatic regulating system - Google Patents
Vehicle-mounted end conversation volume automatic regulating system Download PDFInfo
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- CN111610947A CN111610947A CN202010388848.1A CN202010388848A CN111610947A CN 111610947 A CN111610947 A CN 111610947A CN 202010388848 A CN202010388848 A CN 202010388848A CN 111610947 A CN111610947 A CN 111610947A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/165—Management of the audio stream, e.g. setting of volume, audio stream path
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/16—Sound input; Sound output
- G06F3/167—Audio in a user interface, e.g. using voice commands for navigating, audio feedback
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS OR SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING; SPEECH OR AUDIO CODING OR DECODING
- G10L25/00—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00
- G10L25/03—Speech or voice analysis techniques not restricted to a single one of groups G10L15/00 - G10L21/00 characterised by the type of extracted parameters
Abstract
The invention provides an automatic vehicle-mounted end call volume adjusting system which comprises a signal acquisition module, a signal processing module and an execution module, wherein the signal acquisition module is used for acquiring a call volume of a vehicle terminal; the signal acquisition module acquires a driving end voice signal sent by a driver through a microphone, receives a far-end voice signal received by a mobile terminal of the mobile phone and acquires current vehicle speed information; the signal processing module obtains a corresponding frequency change and amplitude change function according to the driving end voice signal, obtains a corresponding frequency change and amplitude change function according to the far-end voice signal, and judges whether the voice audio and volume of the driving end and the far end are changed too much according to the two frequency change and amplitude change functions; calculating a volume adjustment value according to the judgment result and outputting a volume adjustment signal to an execution module; the execution module adjusts the amplification factor of the far-end voice signal according to the volume adjusting signal. The invention can realize the function of self-adjusting the volume without the need of a driver to adjust the volume control key when the vehicle-mounted terminal is in communication.
Description
Technical Field
The invention relates to the technical field of vehicle-mounted end communication, in particular to a vehicle-mounted end communication volume automatic adjusting system.
Background
In order to ensure that a driver can not conveniently hold mobile communication equipment such as a mobile phone and the like to carry out conversation in the driving process, the mobile communication equipment is generally connected with a vehicle-mounted Bluetooth or other vehicle-mounted wireless data voice communication modules. When a call is made, the mobile terminal of the mobile phone inputs a far-end voice signal into the central control terminal of the automobile through Bluetooth or other wireless communication modes, and the automobile terminal filters and amplifies the voice signal and outputs the voice signal into a far-end voice signal through a loudspeaker; the voice signal of the driver end is input into the central control end of the automobile through the microphone, and then the voice signal of the driver end is input into mobile communication equipment such as a mobile phone through Bluetooth or other wireless communication modes by the automobile end. The vehicle-mounted end communication mode has the defect that when the noise is strong or the voice of people at two ends of the communication is too small, the action of a driver is greatly limited, the communication volume is not convenient to adjust, and the communication content cannot be clearly heard.
Disclosure of Invention
The invention aims to provide an automatic volume adjusting system for vehicle-mounted end communication, aiming at overcoming the defects of the prior art, and realizing the function of self-adjusting the volume without adjusting a volume control key by a driver during vehicle-mounted end communication.
The invention provides an automatic vehicle-mounted end call volume adjusting system which is characterized by comprising a signal acquisition module, a signal processing module and an execution module;
the signal acquisition module acquires a driving end voice signal sent by a driver through a microphone, receives a far-end voice signal received by a mobile terminal of the mobile phone and acquires current vehicle speed information;
the signal processing module obtains a corresponding frequency change and amplitude change function according to the voice signal of the driving end, the signal processing module obtains a corresponding frequency change and amplitude change function according to the voice signal of the far end, and the signal processing module judges whether the voice audio and the volume of the driving end and the far end are changed too much according to the two frequency change and amplitude change functions; if yes, calculating a volume adjusting value according to the two frequency change and amplitude change functions and the vehicle speed information and outputting a volume adjusting signal to an execution module;
the execution module adjusts the amplification factor of the far-end voice signal according to the volume adjusting signal.
In the technical scheme, the signal acquisition module acquires the voice signal of the driver picked up by the microphone and analyzes and extracts the frequency and volume information of the voice; and meanwhile, a far-end call signal acquired from the mobile equipment end is collected, and the frequency and volume information of the voice is analyzed and extracted.
In the above technical solution, the signal processing module compares the voice signal of the driver end to obtain the corresponding frequency variation and amplitude variation function thereof and the voice signal of the far end to obtain the corresponding frequency variation and amplitude variation function thereof, and if the ratio of the two frequency variations and the amplitude variation function is greater than an internally set threshold, it is determined that the voice audio and the voice volume variation of the driver end and the far end are too large.
In the above technical solution, the threshold value set inside is determined by engineering tests.
In the technical scheme, the signal processing module calculates the volume adjusting value of the loudspeaker through comprehensive analysis of a comparison function according to the audio amplitude change condition collected at two ends of the call and wind noise caused by the vehicle speed, and outputs the volume adjusting signal.
In the above technical solution, the execution module controls and adjusts the amplification factor of the car speaker to the far-end voice signal according to the volume adjustment signal given by the signal processing module
The invention provides a scheme for automatically adjusting the volume during the vehicle-mounted terminal call, which does not need a driver to control a volume adjusting knob or touch a screen to adjust the volume by hands, optimizes the call quality and enhances the driving safety of the driver during the vehicle-mounted terminal call. The system obtains the change function of the voice signals of the driving end and the far end to judge whether the volume needs to be adjusted, and simultaneously introduces environmental influence factors to ensure that the scheme of adjustment control is more accurate. The method effectively improves the communication environment in the vehicle, collects the voice information of the driving end and the remote end in real time during communication, and ensures the accuracy of the adjusting result through the input variables in two different environments; meanwhile, through the amplitude change and frequency change functions, the characteristics of the voice signals are captured more accurately, and the accuracy of volume adjustment is improved. According to the invention, the threshold value of the function ratio is obtained through engineering tests, and the setting in the system can be ensured to meet the actual requirement.
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FIG. 1 is a schematic view of the present invention.
Detailed Description
The invention will be further described in detail with reference to the following drawings and specific examples, which are not intended to limit the invention, but are for clear understanding.
As shown in fig. 1, the invention provides an automatic adjusting system for the communication volume of a vehicle-mounted terminal, which is characterized by comprising a signal acquisition module, a signal processing module and an execution module;
the signal acquisition module acquires a driving end voice signal sent by a driver through a microphone, receives a far-end voice signal received by a mobile terminal of the mobile phone and acquires current vehicle speed information;
the signal processing module obtains a corresponding frequency change and amplitude change function according to the driving end voice signal, obtains a corresponding frequency change and amplitude change function according to the far-end voice signal, and judges whether the voice audio and volume of the driving end and the far end are changed too much according to the two frequency change and amplitude change functions; if yes, calculating a volume adjusting value according to the two frequency change and amplitude change functions and the vehicle speed information and outputting a volume adjusting signal to an execution module;
the execution module adjusts the amplification factor of the far-end voice signal according to the volume adjusting signal.
The signal acquisition module collects three signals: at the time t, acquiring a driver voice signal picked up by a microphone, mainly analyzing and extracting frequency information and volume information T (t) of the driver voice; frequency information and volume information R (t) of far-end voice extracted from far-end voice signals transmitted to an automobile by wireless communication; vehicle speed information v (t) of the vehicle. The method can adopt [ T '(T), R' (T) ] + W (T) to directly compare with a threshold value a, collect a driver voice signal picked up by a microphone at the time of T, and mainly analyze and extract frequency information and volume information T (T) of the driver voice; frequency information and volume information R (t) of far-end voice extracted from far-end voice signals transmitted to an automobile by wireless communication; w (t) is wind noise, unit dB, the wind noise is related to the vehicle shape design and the vehicle speed, and each type of vehicle can pass the influence function of simulation and road test wind noise.
And the signal processing module is used for obtaining a frequency change and amplitude change function T '(T) according to the collected driver end voice audio signal and obtaining a frequency change and amplitude change function R' (T) according to the far-end voice audio signal. When the { T '(T), R' (T) } a > a, the size of the threshold value a is determined by engineering tests, namely the voice audio frequency and the volume change of people at two ends of the call are too large, whether the volume of the vehicle-mounted call loudspeaker is not proper at the moment is judged, so that the sound volume is actively adjusted by a driver and people at two ends of the far-end call, the signal processing module comprehensively analyzes and calculates the volume adjusting value of the loudspeaker according to the audio amplitude change condition collected at two ends of the call and wind noise caused by the vehicle speed, and outputs a volume adjusting signal. In the engineering test, a plurality of scenes (scenes with too large or too small vehicle-mounted call volume and under the same vehicle-mounted test environment) are established, a large number of people are found to simulate the scenes to collect sound data, and reasonable sound amplitude change and sound frequency change threshold values are set through analysis, so that the larger the data volume of the collected people is, the more universality is achieved.
And the execution module controls and adjusts the amplification factor of the automobile loudspeaker to the far-end voice signal or controls the voice volume adjustment module by other modules according to the volume adjustment signal given by the signal processing module, so that the function of self-adjustment of the call volume of the vehicle-mounted terminal is realized.
Details not described in this specification are within the skill of the art that are well known to those skilled in the art.
Claims (6)
1. An automatic regulation system for the conversation volume of a vehicle-mounted terminal is characterized by comprising a signal acquisition module, a signal processing module and an execution module;
the signal acquisition module acquires a driving end voice signal sent by a driver through a microphone, receives a far-end voice signal received by a mobile terminal of the mobile phone and acquires current vehicle speed information;
the signal processing module obtains a corresponding frequency change and amplitude change function according to the voice signal of the driving end, the signal processing module obtains a corresponding frequency change and amplitude change function according to the voice signal of the far end, and the signal processing module judges whether the voice audio and the volume of the driving end and the far end are changed too much according to the two frequency change and amplitude change functions; if yes, calculating a volume adjusting value according to the two frequency change and amplitude change functions and the vehicle speed information and outputting a volume adjusting signal to an execution module;
the execution module adjusts the amplification factor of the far-end voice signal according to the volume adjusting signal.
2. The vehicle-mounted end-to-end call volume automatic adjustment system as claimed in claim 1, wherein the signal acquisition module acquires a driver voice signal picked up by the microphone and analyzes and extracts the frequency and volume information of the voice; and meanwhile, a far-end call signal acquired from the mobile equipment end is collected, and the frequency and volume information of the voice is analyzed and extracted.
3. The system according to claim 2, wherein the signal processing module compares the driver-side speech signal to obtain a corresponding frequency variation and amplitude variation function and the far-end speech signal to obtain a corresponding frequency variation and amplitude variation function, and determines that the audio and audio at the driver side and the far end have too large variation if the ratio of the two frequency variations and the amplitude variation function is greater than an internally set threshold.
4. The car-mounted end-to-call volume automatic adjustment system according to claim 3, characterized in that the internally set threshold is determined by engineering experiments.
5. The system according to claim 1, wherein the signal processing module calculates the volume adjustment value of the speaker by performing a comprehensive analysis on a comparison function according to the audio amplitude variation condition collected at the two ends of the call and the wind noise caused by the vehicle speed, and outputs a volume adjustment signal.
6. The system according to claim 1, wherein the execution module controls and adjusts the amplification factor of the car speaker for the far-end voice signal according to the volume adjustment signal provided by the signal processing module.
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| CN202010388848.1A CN111610947B (en) | 2020-05-09 | 2020-05-09 | Vehicle-mounted end conversation volume automatic regulating system |
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