Loudspeaker t/s parameter measurement method, measurement device and electronic equipment

Abstract

The invention provides a T / S parameter measurement method, a measurement device and electronic equipment of a loudspeaker. The T / S parameter measurement method of a loudspeaker includes: acquiring a first impedance curve of the loudspeaker when the diaphragm is loaded and a second impedance curve when the diaphragm is unloaded. Impedance curve; obtain the structure of the equivalent circuit of the speaker, and determine the equivalent impedance of the equivalent circuit; determine the initial value of the equivalent parameters of the equivalent circuit based on the first impedance curve and the second impedance curve; The objective is to minimize the difference between the effective impedance and the measured impedance read from the second impedance curve, and the equivalent parameters are adjusted to obtain the measurement result. The method for measuring the T / S parameter of the loudspeaker of the present invention, by establishing an equivalent impedance function, and taking the parameters measured from the impedance curve as the initial value for gradual optimization, in the case of collecting fewer frequency points, an accurate measurement can be obtained. The measurement results, and the measurement time is less, which helps to improve the research and development quality of earphones and speed up the research and development.

Description

technical field [0001] The present invention relates to the technical field of acoustics, in particular to a method for measuring T / S parameters of a loudspeaker, a measuring device and electronic equipment. Background technique [0002] Loudspeakers are widely used in electronic equipment such as headphones. When designing loudspeakers, it is necessary to measure their parameters to facilitate the design of subsequent structures. Among them, the T / S parameters are the most widely used and recognized group of parameters in the electro-acoustic industry. [0003] In the prior art, when measuring T / S parameters, it is usually a point-by-point frequency sweep of a limited number of frequency points on the impedance curve to read the center frequency, peak value and bandwidth for subsequent calculation. Rarely, making the measurement inaccurate. In order to improve the accuracy, in the related art, multiple sets of curves are measured, the average value is taken, or a user-def...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a T / S parameter measurement method, measurement device and electronic equipment of a loudspeaker, which are used to solve the defect of inaccurate measurement in the prior art and realize efficient and high-quality detection

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