Sound-producing apparatus, calibration method for sound-producing apparatus, sound-producing unit and headset equipment

A calibration method for a sound-producing apparatus, wherein the sound-producing apparatus comprises two sound-producing units;

• each of the sound-producing units comprises a cavity, a sound-producing unit body and an adjusting apparatus;
• the sound-producing unit body is provided in the cavity, and the cavity is separated into a front cavity and a rear cavity;
• the adjusting apparatus comprises an adjusting plate and a driving portion;
• one end of the adjusting plate is rotatably provided on an inner wall of the rear cavity, and the driving portion is configured to drive the adjusting plate to move so as to adjust an effective volume of the rear cavity;
• the calibration method for the sound-producing apparatus comprises:
• obtaining frequency response parameters of the two sound-producing units;
• and
• controlling the adjusting apparatus and/or an input voltage of at least one of the sound-producing units according to a differential value between the frequency response parameters to make the differential value between the frequency response parameters of the two sound-producing units be within a preset range.

A sound-producing unit, comprising:

• a cavity;
• a sound-producing unit body;
• and
• an adjusting apparatus;
• wherein the sound-producing unit body is provided in the cavity and the cavity is separated into a front cavity and a rear cavity;
• the adjusting apparatus comprises an adjusting plate and a driving portion, and one end of the adjusting plate is rotatably provided on an inner wall of the rear cavity;
• the driving portion is configured to drive the adjusting plate to move so as to adjust an effective volume of the rear cavity;
• wherein in each of the sound-producing units, the inner wall of the rear cavity is provided with a plurality of sealing fitting portions on a rotation track of the adjusting plate, and the other end of the adjusting plate is configured to move to be sealingly connected with one of the sealing fitting portions.