Control circuit of wireless microphone

Abstract

The invention discloses a control circuit of a wireless microphone. The control circuit of the wireless microphone comprises a microprocessor, an audio collecting circuit, an audio compressing circuit, an audio emission circuit, a powering supply, a gesture monitoring sensor and a mute control circuit; the signal output end of the gesture monitoring sensor is connected with the microprocessor of which the mute control signal output end is connected with the control signal input end of the mute control circuit; the audio signal output end of the audio collecting circuit is connected with the audio compressing circuit of which the output end is connected with the audio emission circuit by the mute control circuit; after the time that the angle or position of the microphone does not change achieves the timing of a first stage, the microprocessor cuts off the audio signal, entering the audio emission circuit, of the audio compressing circuit by the mute control circuit. A sound loop can be timely closed and restored, silencing is timely performed as far as possible under the condition that the use of a user is not influenced, squealing is avoided, and the use time and service life of a wireless microphone power supply are prolonged.

Description

[technical field] [0001] The invention relates to a wireless microphone, in particular to a control circuit of the wireless microphone. [Background technique] [0002] For a long time, during the use of wireless microphones, the control idea is only the modulation of its carrier frequency, the adjustment of common functions such as power adjustment and display. However, in the process of use, it often occurs that the microphone is placed on the opposite side of the speaker unconsciously, so that a strong howling will appear due to an external noise. Although the pre-stage squelch will weaken this phenomenon to a certain extent, it will still be There are many microphones that have similar problems. At the same time, the wireless microphone uses a mobile power supply, but for a long time it seems that due to the problem of the use occasion, everyone does not pay much attention to the issue of energy saving, and often reduces its power consumption to extend the use time. [C...

AI Technical Summary

Problems solved by technology

However, in the process of use, it often occurs that the microphone is placed on the opposite side of the speaker unconsciously, so that a strong howling will appear due to an external noise. Although the pre-stage squelch will weaken this phenomenon to a certain extent, it will still be There are many microphones with similar problems

At the same time, the wireless microphone uses a mobile power supply, but for a long time it seems that due to the problem of the use occasion, everyone does not pay much attention to the issue of energy saving, and often reduces its power consumption to extend the use time

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