Playing device, sound production equipment and control device thereof

Abstract

The invention discloses sound production equipment, and the equipment comprises a shell; a front sound outlet and a rear sound outlet are formed in the shell; a first loudspeaker and a second loudspeaker are arranged in the shell; a front cavity of the first loudspeaker is communicated with the front sound outlet, a rear cavity of the first loudspeaker and a front cavity of the second loudspeaker are both communicated with the rear sound outlet, and a rear cavity of the second loudspeaker is closed; the sound signal output by the rear cavity of the first loudspeaker is opposite to the sound signal output by the front cavity of the second loudspeaker in phase, and the sound signal output by the rear cavity of the first loudspeaker is opposite to the sound signal output by the front cavity of the first loudspeaker in phase. The purpose of attenuating sound radiation to the outside can be achieved, and the purposes of weakening attenuation of far-field sound signals and improving the sensitivity of the sound signals at the human ears can also be achieved. The invention further discloses a control device of the sound production equipment and the playing equipment, which have the above beneficial effects.

Description

technical field [0001] The present application relates to the field of audio control, in particular to a playback device, a sound generating device and a control device thereof. Background technique [0002] At present, the commonly used head-mounted playback devices play sound signals through sound-generating devices set on them. The sound-generating devices include speakers. Refer to figure 1 As shown, the front of the speaker is connected to the front sound outlet of the sound-generating device, the back of the speaker is connected to the rear sound outlet of the sound-generating device, and the sound-generating device radiates sound signals outward through the front sound outlet and the rear sound outlet. Since the sound signal on the front of the loudspeaker is in opposite phase to the sound signal on the back, the sound signals at the front and rear sound outlets of the sound-generating device are in opposite phase. The distance between the receiving point in the hori...

AI Technical Summary

Problems solved by technology

However, in the near field, that is, the signal heard by the human ear will also be affected by the signal interference between the front sound outlet and the rear sound outlet, which makes the sensitivity of the human ear to the middle and low frequency sound signals decrease.

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