Voice spectrum recognition and voice pressure vibration detection device and method for starting gun voice

Abstract

The invention provides a voice spectrum recognition and voice pressure vibration detection device and method for starting gun voice, belongs to the technical field of acoustic effect measurement, andaims at solving the problems that an electronic racing timing system is low in racing timing precision and prone to false triggering. The device comprises a host, a gooseneck pipe and a sensor assembly, the sensor assembly comprises a shell, a voice sensor and a vibration sensor. Wherein the voice sensor and the vibration sensor are fixedly arranged in the shell, the host comprises a casing, a battery and a circuit board, the circuit board and the battery are fixedly arranged in the casing, one end of the gooseneck is fixedly connected to the shell, the other end of the gooseneck is fixedly connected to the casing, and a voice frequency spectrum processing module, a voice pressure vibration processing module and a microprocessor are arranged on the circuit board. According to the method, when two judgment conditions of frequency spectrum effectiveness and intensity effectiveness are met at the same time, the starting gun voice is judged to be effective, and finally a starting signal istriggered. The method is used for voice frequency spectrum recognition and voice pressure vibration detection of the starting gun voice.

Description

technical field [0001] The invention belongs to the technical field of measuring acoustic effects, and in particular relates to a sound spectrum identification and sound pressure vibration detection device and method of a starting gun sound. Background technique [0002] The job trigger of existing " electronic racing timing system " all is to monitor the firing sound of starting pistol, and automatically triggers to start after the sound sensor monitors gunshot. There are deficiencies in actual use: [0003] 1. In terms of usage, it is conventional to tie the sound sensor to the starting gun or place the sound sensor near the starter. If it is tied to the starting gun, the wired transmission of the sound sensor will affect the normal operation of the starting gun by the starter. If it is placed In the vicinity of the starter, if the position is improper and the distance is far away, there will be a 3ms delay in the propagation time of sound speed for every 1 meter distance...

AI Technical Summary

Problems solved by technology

[0003] 1. In terms of usage, it is common practice to tie the sound sensor to the starting gun or place the sound sensor near the starter. If it is tied to the starting gun, the wired transmission of the sound sensor will affect the normal operation of the starting gun by the starter. If it is placed In the vicinity of the starter, if the position is not proper and the distance is far away, there will be a 3ms delay in the propagation time of sound speed for every 1 meter distance, which will affect the accuracy of racing timing;

[0004] 2. Unable to overcome various interference noises. Environmental noise, shouts, and drums and horns in the auditorium are all noises that affect the sound sensor. In extreme cases, it will cause false triggering of the sound sensor;

[0005] 3. Gunshots cannot be effectively identified. Starting gunshots from nearby competitions will also affect the sound sensor. It is difficult to distinguish between gunshots, causing the sound sensor to receive other gunshots and be triggered by mistake.

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