A system and method for judging and locating abnormal sound sources

Abstract

The invention discloses a system and method for judging and locating an abnormal sound source. The system includes a microprocessor module, a sound collection module and an abnormal sound source indication module. The microprocessor module includes a microprocessor, a crystal oscillator circuit, a reset circuit and a data memory; the sound collection module includes three-way sound collection circuits, and each sound collection circuit is composed of a microphone, an audio amplifier circuit, an A / D conversion circuit and an anti-aliasing filter connected in sequence; the abnormal sound source indication module includes a liquid crystal display 1. The four-way abnormal sound source indicating circuit, the left arm ring and the right arm ring, and the four-way abnormal sound source indicating circuit are all composed of a sequentially connected D / A conversion circuit, a power amplifier circuit, a boost circuit and a position indicating electrode; the method The steps include: 1. sound signal collection and transmission, 2. abnormal sound source judgment, 3. abnormal sound source location, and 4. abnormal sound source orientation indication. The invention can efficiently and accurately locate the azimuth of the abnormal sound source, has strong practicability, and is convenient for popularization and use.

Description

Technical field[0001]The present invention belongs to the field of sound detection, and more particularly to an abnormal sound source judgment and a positioning system and method.Background technique[0002]The sound, it doesn't have quality, but it can generate energy effects, sound, it is a longitudinal wave, but it is different from the light wave, the light is light, it is moving, there is energy, quality, and physical only The sound is no quality. As an abnormal sound of a sound, it is completely available as these characteristics as described above.[0003]The emergency in the environment is often accompanied by sudden release of more energy, such as explosion, collision, etc., which often includes sound waves that can generate large energy flow density simultaneously, and generate high loudness or accompanying high The frequency of the frequency. On the other hand, social organisms will also increase the information that is important, especially a warning effect by increasing the...

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

Images