An acoustic test system for anc earphones

Abstract

The present invention relates to the technical field of earphone acoustic structure, in particular to an ANC earphone acoustic test system, which includes an audio system, a test sound card, a test microphone, a converter, and a console. The audio system includes a test speaker, and the test speaker includes an analog front shell and a simulated rear case, the simulated front case is provided with a front chamber, the simulated front case is also provided with a middle chamber, a channel and a leakage hole, and a test space for accommodating the measured resonance damping speaker box is arranged in the middle chamber , the inner wall of the middle cavity is provided with a mounting hole, one end of the leakage hole is connected to the front cavity, and the mounting hole is provided with an elastic flat pressure tube body for supporting and connected with the inside of the resonance damping speaker box, and the flat pressure tube body One end is plugged into the mounting hole. An ANC earphone acoustic testing system of the present invention can be used to test a resonance damping speaker box with a special structure, is easy to install and replace the measured resonance damping speaker box, and simulates the actual earphone assembly environment of the speaker.

Description

technical field [0001] The invention relates to the technical field of earphone acoustic structure, in particular to an ANC earphone acoustic test system. Background technique [0002] The acoustic structure of active noise-cancelling headphones seriously affects the overall performance of the headphones, and they must pass various tests before entering the market. [0003] A 2 NC2.0 is a representative of the new generation of headphone technology, but there are still many technical problems to be solved. The production consistency of noise-cancelling headphones is very high. At the same time, it is also necessary to consider whether the design of the headphones can ensure the consistency of leakage when worn by real people. The common method in design is to increase the leakage resistance of the front cavity, but this will lead to frequency response The range is narrowed, which reduces the sensitivity of the earphone. In order to solve this problem, someone proposed a de...

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Problems solved by technology

The production consistency of noise-cancelling headphones is very high. At the same time, it is also necessary to consider whether the design of the headphones can ensure the consistency of leakage when worn by real people. The common method in design is to increase the leakage resistance of the front cavity, but this will lead to frequency response The range is narrowed, which reduces the sensitivity of the earphone. In order to solve this problem, someone proposed a design of a resonance damping speaker box. In the speaker installation box, it is proposed to realize the problem through the material selection and structural design of the resonance damping speaker box. Solved, but the prior art has not been able to provide a system for simulating the acoustic performance of the resonance damping speaker box

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