Test field for speaker sound and testing method

Abstract

The invention discloses a test field for speaker sound. The test field is obtained by transforming a normal room, and comprises a closed space, wherein an empty space is formed in the top of the closed space; a round test hole is formed in the center of the top of the closed space; a test panel is mounted on the test hole; a clamp for mounting a speaker is arranged on the test panel; the panel surface of the test panel is coincided with the horizontal plane of the top of the closed space; the test panel is fixed at the top of the room through a lifting device; soft high polymer materials are mounted at the periphery of the test hole and are used for forming a totally closed environment between the test panel and the test hole; five asbestos boards are arranged at the periphery of the lifting device in the empty space so as to form a cuboid-shaped sound absorption space; a microphone used for receiving the sound is arranged under the test panel in the closed space and is connected with a test control module. The test field provided by the invention is reasonable in structure, the inherent structural pattern in the prior art is changed, the installation construction problem which cannot be solved for a long time is solved, and the test field has excellent application prospects.

Description

technical field [0001] The invention relates to a testing field and a testing method for loudspeaker sound, belonging to the technical field of loudspeaker testing. Background technique [0002] Loudspeaker sound testing must be carried out in a free sound field, and the test room is a laboratory that simulates a free sound field. [0003] In the prior art, due to the space setting of the test room, a test panel is often installed on the wall or on the ground vertical to the ground of the shielding room for installing the speaker under test. [0004] If the speaker under test is installed on the wall of the shielding room vertical to the ground, since there are upper and lower roofs and the ground between the wall and the microphone, the distance between the ground and the roof will not be very high due to the height limit of the building itself. Therefore, the echo generated by it will cause echo interference and affect the test result of the speaker. [0005] If the spea...

AI Technical Summary

Problems solved by technology

[0004] If the speaker under test is installed on the wall of the shielding room vertical to the ground, since there are upper and lower roofs and the ground between the wall and the microphone, the distance between the ground and the roof will not be very high due to the height limit of the building itself. Therefore, the echo generated by it will cause echo interference and affect the test results of the speaker

[0005] If the speaker under test is installed on the ground of the shielding room, due to the floor setting of the ordinary room, it is impossible to dig holes on the floor, which will cause difficulties in construction, and the defect of insufficient airtightness of the space will be caused when the speaker is installed

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