A dual-transduction way combined coaxial full-range loudspeaker

Abstract

The invention discloses a combined coaxial full-frequency loudspeaker in a double-transduction mode, which includes a magnetic circuit structure, a voice coil is provided on the upper part of the magnetic circuit structure, and a vibration plate is provided at the output end of the voice coil, and the vibration plate is A disc made of piezoelectric material is used, and the disc is fixed on the magnetic circuit structure through a ring and a washer. The present invention combines the dynamic speaker and the piezoelectric speaker, and uses the transducer device of the piezoelectric speaker - the piezoelectric disc as the vibrating plate (cone) of the dynamic speaker to work in the low frequency band as an electrodynamic transducer. Working with piezoelectric transducers in the high-frequency band, a new type of unique combined full-range speaker is formed. Full frequency band work. The invention can be widely used in the field of loudspeakers.

Description

technical field [0001] The present invention relates to a loudspeaker, especially a combined coaxial full-range loudspeaker in a dual-transduction mode. new transducers. Background technique [0002] At present, the piezoelectric transducer (speaker) utilizes the characteristics of mechanical deformation of the piezoelectric material under the action of an electric field to achieve the electro-acoustic transduction effect. The magnitude of its deformation is proportional to the electric field strength. [0003] Piezoceramics are piezoelectric, meaning they generate an additional charge when pressure is applied. The piezoelectric effect reflects the coupling between the elastic and dielectric properties of crystals. The piezoelectric equation reflects the relationship between the elastic variables (ie, stress, strain) and electrical variables (ie, electric field and electric displacement) of piezoelectric ceramics. [0004] Most of the piezoelectric materials in the past ...

AI Technical Summary

Problems solved by technology

But this has caused new problems: first, the frequency division device is increased, and second, the number of transducers is increased, which increases the total volume

[0016] When the above two combinations are arranged, because the two sound radiation sources will work at the same time near the frequency crossover point, the sound waves radiated by the two sound sources will reach the listener at different distances near the frequency crossover point, which will cause The sound waves interfere with each other (superimposed when in phase and canceled when out of phase), which affects the balance of the sound wave output of the entire system

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