Loudspeaker

Abstract

The invention discloses a loudspeaker. The loudspeaker comprises a vibrating diaphragm, a basin stand, a sound coil, a metal pillar, a first input end, a second input end, a magnet, a magnetic carrier and a metal shell, wherein the basin stand is used for supporting the vibrating diaphragm, the metal pillar is arranged in the sound coil, the first input end and the second input end are connected with the sound coil, the magnetic carrier is used for bearing the magnet, and the metal shell is connected with the basin stand and used for containing the sound coil, the metal pillar, the magnet, the first input end, the second input end and the magnetic carrier. By the adoption of the loudspeaker, electromagnetic radiation can be shielded, so that the electromagnetic radiation of the sound coil is lowered, the sound quality is effectively improved, digital sounds in the audio field are effectively removed, the sound timbre is made soft, analysis force is increased, and the sound effect is improved.

Description

technical field [0001] The invention relates to the field of audio technology, in particular to a loudspeaker capable of shielding electromagnetic radiation. Background technique [0002] The instantaneous power loss of the audio power amplifier power supply charging and discharging conversion, or the interference of the pulse wave at the input terminal, and the backflow of the semiconductor output tube when the signal itself crosses zero, will cause the current to turn off the circuit instantaneously. [0003] However, due to the inductive characteristics of the voice coil of the moving coil speaker, a momentary power failure will cause pulse waves of differential mode and common mode to appear. And due to various reasons such as the skin effect of the conductor in the transmission line, the surface defect of the conductor, and the speed of the absorbing device, the pulse wave cannot be well absorbed in the very short time at the beginning, which will cause interference to ...

AI Technical Summary

Problems solved by technology

[0004] For this kind of pulse wave, which may not appear frequently but has extremely high-frequency properties locally, it is easy to ignore it. Since it is difficult for traditional instruments to capture its traces in the nanosecond picosecond region, the high-frequency circuit And the audio field which is extremely sensitive to this kind of pulse wave, the understanding and processing of this kind of pulse wave is even more serious blank

The distortion caused by this pulse wave may be the main body of circuit distortion in the audio system, or one of the most important parts. In this audio field, it is attempted to use transient intermodulation distortion (TIMD), interface intermodulation distortion ( IIMD) and phase intermodulation distortion (PIMD) actually come from this phenomenon, which seriously affects the sound effect.

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