Method of defining working limit of loudspeaker

Abstract

The invention relates to the field of manufacturing of a micro horn, and provides a method of defining a working limit of a loudspeaker. The displacement of the loudspeaker in sweep frequency is monitored in real time; when the loudspeaker reaches the limit, the limit displacement is recorded; the maximum temperature resistance value of the loudspeaker and the limit displacement are combined to the working limit condition of the loudspeaker; and thus, the working limit of the loudspeaker can be nominal more accurately.

Description

technical field [0001] The invention relates to the field of micro-speaker manufacture, in particular to a method for defining the operating limit of the loudspeaker. Background technique [0002] Micro-speakers are a type of loudspeakers, which are widely used in mobile devices and other portable electronic products. Miniature speakers usually refer to speakers with a size of less than 15mm*15mm and a power of less than 2W used in portable devices. [0003] Please refer to figure 1 , the micro-speaker is usually composed of a coil 1, a diaphragm 2 and a magnet 3. The diaphragm 2 and the coil 1 form a flexible suspension system. After the coil 1 is energized, under the magnetic field of the magnet 3, an upward or downward force is formed to drive the diaphragm. 2 Vibrate up and down, thereby pushing the air to vibrate and make a sound. [0004] At present, the rated power is usually used to indicate the working limit of the micro-speaker, that is, the micro-speaker can st...

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Problems solved by technology

[0006] However, in practical applications, the music signal is a random signal, which is a combination of various frequencies at various signal amplitudes. The speaker is a suspension system, and the effect of the electrical signal will have a certain hysteresis effect. Therefore, the rated power (electrical signal) to measure the mechanical limit and there is a certain deviation

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