Abnormal sound source judging and positioning system and abnormal sound source judging and positioning method

Abstract

The invention discloses an abnormal sound source judging and positioning system and an abnormal sound source judging and positioning method. The abnormal sound source judging and positioning system comprises a microprocessor module, a sound collection module and an abnormal sound source indication module, the microprocessor module comprises a microprocessor, a crystal resonance circuit, a reset circuit and a data memory, the sound collection module comprises three sound collection circuits, each of the sound collection circuits comprises a microphone, an audio frequency amplification circuit, an A / D conversion circuit and an anti-aliasing filter which are connected in sequence, the abnormal sound source indication module comprises a liquid crystal display screen, four abnormal sound source indication circuits, a left arm ring and a right arm ring, and each of the four abnormal sound source indication circuits comprises a D / A conversion circuit, a power amplification circuit, a voltage booster circuit and a position-indicating electrode which are sequentially connected. The abnormal sound source judging and positioning method includes the steps of firstly, collecting and transmitting sound signals; secondly, judging an abnormal sound source; thirdly, positioning the abnormal sound source; fourthly, indicating a position of the abnormal sound source. The abnormal sound source judging and positioning system and the abnormal sound source judging and positioning method can position the abnormal sound source accurately and efficiently, and are highly practical and convenient to popularize and use.

Description

technical field [0001] The invention belongs to the technical field of sound detection, and in particular relates to a system and method for judging and locating abnormal sound sources. Background technique [0002] Sound, it has no mass, but it can produce energy effects, sound, it is a longitudinal wave, but it is different from light waves, light has photons, it has momentum, energy, and mass, but only pressure in physics The sound is of no quality. As a kind of sound, abnormal sound fully possesses the above-mentioned characteristics of sound. [0003] Sudden events in the environment are often accompanied by the sudden release of more energy, such as explosions, collisions, etc. The release of these energy often includes mechanical energy and the sound waves with high energy flow density at the same time. At this time, high loudness or accompanied by high frequency sound. On the other hand, social creatures will also convey important information, especially warning i...

AI Technical Summary

Problems solved by technology

[0004] There are more than 17 million deaf-mute people in our country. In addition, there are more hearing-impaired patients with unilateral or bilateral hearing loss. They cannot normally obtain abnormal sounds or distinguish the direction of sounds, so they cannot find out in time, such as cars honking their horns, loud noises, etc. Sound sources with abnormal warning information such as shouting pedestrians and falling glasses

At present, patients can only solve this problem by wearing bilateral hearing aids, but this is costly and relies on residual hearing

[0005] At present, the research on abnormal sound detection and recognition technology started relatively late, and the development is relatively slow. Some researchers judge whether there is a sound in the environment by calculating the feature vector of each sound frame and comparing it with the template. The method has a large amount of calculation, and the real-time performance is not good; there are also studies that use the calculation of characteristic parameters and training to classify a sound in detail, and divide it into explosions, gunshots, and glass breaking sounds, etc., and the calculation amount is also relatively large

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