CN210868080U

CN210868080U - Wireless microphone device

Info

Publication number: CN210868080U
Application number: CN201922393682.8U
Authority: CN
Inventors: 吴炎柏
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-06-26
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a wireless microphone device, which comprises a main control module, a plurality of receiving antennas, a plurality of FM demodulators, an electronic volume control module, a diversity control module, an audio matrix module, an external input preamplifier and a post output amplifier; the main control module is respectively connected with the audio matrix module, the diversity control module and the FM demodulator through circuits; the antenna is connected with the corresponding FM demodulator circuit: the FM demodulator is connected with the electronic volume control module through a circuit; the electronic volume control module is connected with the diversity control module through a circuit; the diversity control module is connected with the audio matrix module through a circuit; the external input preamplifier is connected with the audio input end through a circuit, and the external input preamplifier is connected with the audio matrix module through a circuit; the post-output amplifier is connected with the audio matrix module through a line, and the post-output amplifier is connected with the audio main output end through a line.

Description

Wireless microphone device

Technical Field

The utility model relates to a microphone field especially relates to a wireless microphone device.

Background

With the development of the economic society and the continuous improvement of the mobile communication technology level, digital products such as wireless microphones and the like are more and more commonly found in daily life.

Most of wireless microphones adopt a bluetooth technology or an FM technology for signal transmission, however, a microphone system adopting the bluetooth technology has a narrow bandwidth and a transmission distance of only about ten meters, and thus, the requirement of remote transmission cannot be met. In addition, in the external sound amplification environment of the conventional wireless microphone, the audio signals played by the loudspeaker are picked up by the microphone again and amplified and played by the audio power amplifier to form sound wave positive feedback, and howling is easily generated when the volume of the system is large.

In view of the above-mentioned problems and disadvantages, there is a need for an improved wireless microphone.

Disclosure of Invention

The utility model aims at the above-mentioned problem, provide a simple structure, the better wireless microphone device of audio.

In order to realize the purpose, the technical scheme of the utility model is that:

a wireless microphone device comprises a main control module, a plurality of receiving antennas, a plurality of FM demodulators, an electronic volume control module, a diversity control module, an audio matrix module, an external input preamplifier and a post-output amplifier, wherein the FM demodulators correspond to the receiving antennas; the signal output end of the main control module is respectively connected with the signal input ends of the audio matrix module, the diversity control module and the FM demodulator through circuits; the signal output end of the antenna is connected with the input end line of the corresponding FM demodulator; the signal output end of the FM demodulator is connected with the signal input end of the electronic volume control module through a line; the signal output end of the electronic volume control module is connected with the signal input end of the diversity control module through a line; the signal output end of the diversity control module is connected with the signal input end of the audio matrix module through a line; the signal input end of the external input preamplifier is connected with the audio input end through a line, and the signal output end of the external input preamplifier is connected with the signal input end of the audio matrix module through a line; the signal input end of the post-output amplifier is connected with the signal output end of the audio matrix module through a line, and the signal output end of the post-output amplifier is connected with the audio main output end through a line.

Furthermore, the wireless microphone device further comprises an infrared emission module, and a signal input end of the infrared emission module is connected with a signal output end of the main control module through a circuit.

Furthermore, the wireless microphone device further comprises a liquid crystal display, and a signal input end of the liquid crystal display is connected with a signal output end of the main control module through a circuit.

Furthermore, the wireless microphone device further comprises a man-machine interface, and a signal input end of the man-machine interface is connected with a signal output end of the main control module through a circuit.

Compared with the prior art, the utility model has the advantages and positive effect be:

the utility model discloses at the during operation, the antenna receives audio frequency modulation signal after, demodulates out audio signal through the FM demodulator, then with audio signal input electronic volume control module, realizes audio frequency amplification and independent volume control. The audio modulation signals received by the antennas enter the diversity control module together after the same processing operation, enter the audio matrix module after the independent/diversity processing, and simultaneously, the external audio signals received by the audio input end enter the audio matrix module together after passing through the external input preamplifier. And after the audio signal is processed by the audio matrix module, the audio signal is output as audio through a post-output amplifier. The output of the audio master output end is a mixed audio signal processed by a series of functions, the audio signal can be output to the audio input end of the next host, and matrix processing is carried out on the audio matrix module of the next host.

The utility model adopts the unique audio matrix module, which can reduce the environmental sound pressure to the minimum at the same time in the multi-unit meeting process, thereby reducing the squeaking probability and enabling the speaker to use the pickup effect at a longer distance; the audio matrix module is additionally provided with an online function and can be connected with other hosts through an external input preamplifier and a post output amplifier, so that the aim of mutual control of a plurality of independent hosts is fulfilled, and the microphone can meet more use requirements and adapt to different environments; and simultaneously, the utility model provides a diversity control module has the function of freely switching between independent passageway receipt and true diversity passageway receipt for the receiver can satisfy the user demand of more distant.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a frame structure diagram of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, any modifications, equivalent replacements, improvements, etc. made by other embodiments obtained by a person of ordinary skill in the art without creative efforts shall be included in the protection scope of the present invention.

As shown in fig. 1, the wireless microphone apparatus in this embodiment includes a main control module, a plurality of receiving antennas, a plurality of FM demodulators corresponding to the receiving antennas, an electronic volume control module, a diversity control module, an audio matrix module, an external input preamplifier, and a post-output amplifier; the signal output end of the main control module is respectively connected with the signal input ends of the audio matrix module, the diversity control module and the FM demodulator through circuits; the signal output end of the antenna is connected with the input end line of the corresponding FM demodulator; the signal output end of the FM demodulator is connected with the signal input end of the electronic volume control module through a line; the signal output end of the electronic volume control module is connected with the signal input end of the diversity control module through a line; the signal output end of the diversity control module is connected with the signal input end of the audio matrix module through a line; the signal input end of the external input preamplifier is connected with the audio input end through a line, and the signal output end of the external input preamplifier is connected with the signal input end of the audio matrix module through a line; the signal input end of the post-output amplifier is connected with the signal output end of the audio matrix module through a line, and the signal output end of the post-output amplifier is connected with the audio main output end through a line.

The wireless microphone device further comprises an infrared emission module, and the signal input end of the infrared emission module is connected with the signal output end of the main control module through a circuit. The infrared emission module is mainly used for being matched with the main control module to send frequency data to the outside, and when the host microphone receives the frequency data, the frequency is automatically switched to the frequency same as that of the host, so that synchronous frequency conversion is realized.

The wireless microphone device also comprises a liquid crystal display, and the signal input end of the liquid crystal display is connected with the signal output end of the main control module through a circuit. The liquid crystal display is used for displaying information such as volume.

The utility model discloses at the during operation, after antenna A, antenna B, antenna C, antenna D received audio frequency modulation signal, demodulated out audio signal through the FM demodulator, then with audio signal input electronic volume control module, realized audio frequency amplification and independent volume control. The audio modulation signals received by the antennas enter the diversity control module together after the same processing operation, enter the audio matrix module after the independent/diversity processing, and simultaneously, the external audio signals received by the audio input end enter the audio matrix module together after passing through the external input preamplifier. And after the audio signal is processed by the audio matrix module, the audio signal is output as audio through a post-output amplifier. The output of the audio master output end is a mixed audio signal processed by a series of functions, the audio signal can be output to the audio input end of the next host, and matrix processing is carried out on the audio matrix module of the next host.

Claims

1. A wireless microphone apparatus, characterized in that: the wireless microphone device comprises a main control module, a plurality of receiving antennas, a plurality of FM demodulators, an electronic volume control module, a diversity control module, an audio matrix module, an external input preamplifier and a post-output amplifier, wherein the FM demodulators correspond to the receiving antennas; the signal output end of the main control module is respectively connected with the signal input ends of the audio matrix module, the diversity control module and the FM demodulator through circuits; the signal output end of the antenna is connected with the input end line of the corresponding FM demodulator; the signal output end of the FM demodulator is connected with the signal input end of the electronic volume control module through a line; the signal output end of the electronic volume control module is connected with the signal input end of the diversity control module through a line; the signal output end of the diversity control module is connected with the signal input end of the audio matrix module through a line; the signal input end of the external input preamplifier is connected with the audio input end through a line, and the signal output end of the external input preamplifier is connected with the signal input end of the audio matrix module through a line; the signal input end of the post-output amplifier is connected with the signal output end of the audio matrix module through a line, and the signal output end of the post-output amplifier is connected with the audio main output end through a line.

2. The wireless microphone apparatus of claim 1, wherein: the wireless microphone device further comprises an infrared emission module, and the signal input end of the infrared emission module is connected with the signal output end of the main control module through a circuit.

3. The wireless microphone apparatus of claim 1, wherein: the wireless microphone device also comprises a liquid crystal display, and the signal input end of the liquid crystal display is connected with the signal output end of the main control module through a circuit.

4. The wireless microphone apparatus of claim 1, wherein: the wireless microphone device further comprises a man-machine interface, and the signal input end of the man-machine interface is connected with the signal output end of the main control module through a circuit.