CN220896811U - Microphone switching system - Google Patents

Abstract

The utility model discloses a microphone switching system, which comprises a microphone receiver and a microphone transmitter unit, wherein the microphone receiver comprises a switching module, an online main module and an online auxiliary module, the online main module is connected with the switching module, the online main module is wirelessly connected with a first online sub-module and a second online sub-module, the online auxiliary module is wirelessly connected with a third online sub-module and a fourth online sub-module, the microphone transmitter unit and the microphone receiver start a code matching, and the online main module controls the online auxiliary module to disconnect or connect the third online sub-module and the fourth online sub-module through the switching module.

Description

Microphone switching system

Technical Field

The utility model relates to the technical field of microphones, in particular to a microphone switching system.

Background

With the rapid development of self-media nowadays, in order to pursue better sound quality, audio and video producers often use a separate microphone to record sound, and wireless microphones are widely used because of the characteristic of being convenient to carry.

Typically, one microphone receiver is equipped with one, two, four or more microphone transmitters, and the microphone receiver is used online with the microphone transmitters, so that the problem of synchronous recording of multiple persons can be solved. The more transmitters that are on-line with the receiver, the greater the power consumption of the receiver. However, in the prior art, the setting of the microphone connection amount is fixed, for example, one-to-four mode is adopted, and when the receiver is connected with less than four transmitters, the receiver also tries to be connected with the transmitters, so that more electric quantity is consumed, and the endurance of the microphone is reduced.

Disclosure of utility model

The utility model aims to overcome the defects in the prior art and provides a microphone switching system capable of improving the endurance of a microphone.

The aim of the utility model is realized by the following technical scheme:

The microphone switching system comprises a microphone receiver and a microphone transmitter group, wherein the microphone receiver comprises a switching module, an online main module and an online slave module, the online main module is connected with the switching module, the microphone transmitter group comprises a first microphone sub-module, a second microphone sub-module, a third microphone sub-module and a fourth microphone sub-module, the microphone transmitter group further comprises a plurality of microphone transmitters, the online main module is in wireless connection with the first microphone sub-module and the second microphone sub-module, the online slave module is in wireless connection with a third microphone sub-module and a fourth microphone sub-module, the microphone transmitter group is connected with the microphone receiver starting code matching, the online main module is controlled by the switching module to disconnect the online slave module or connect the third microphone sub-module and the fourth microphone sub-module, the switching module can realize the effect that one microphone receiver is provided with one, two, four or more microphone transmitters (one, four and one microphone transmitter, and multiple microphone transmitters), and the microphone receiver and the multiple microphone receivers can be used synchronously.

Further, the microphone receiver further comprises an audio transmission module, wherein the audio transmission module is connected with the online main module and the online slave module, and the audio transmission module transmits the audio signals received by the online slave module to the online main module.

Further, the microphone receiver further comprises a first signal amplifying module and a first RF module, wherein the first signal amplifying module is connected with the first RF module, the first RF module receives the main module audio signal of the microphone transmitter set, sends and receives on-line signals, and transmits the main module audio signal to the first signal amplifying module, and the first signal amplifying module processes and transmits the main module audio signal to the on-line main module.

Further, the microphone receiver further comprises a second signal amplification module and a second RF module, wherein the second signal amplification module is connected with the second RF module, the second RF module receives the audio signals of the slave module of the microphone transmitter group and transmits the audio signals of the slave module to the second signal amplification module, and the second signal amplification module processes the audio signals of the slave module and transmits the audio signals of the slave module to the online slave module.

Further, the microphone receiver further comprises an audio output module, wherein the audio output module is connected with the online main module, and the audio output module outputs processed main module audio signals and slave module audio signals.

Further, the audio output module comprises an output unit, and the output unit is connected with the online main module.

Furthermore, the audio output module comprises an ear amplifier unit, the ear amplifier unit is connected with the online main module and the output unit, and the ear amplifier unit performs digital-to-analog conversion on the main module audio signal and the slave module audio signal output by the online main module, amplifies and transmits the signals to the output unit.

Further, the output unit comprises an earphone interface, the earphone interface is connected with the output unit, and the output unit filters the audio signal, reduces noise and transmits the audio signal to the earphone interface.

Further, the switching module includes a switch S2, the 2 nd end of the switch S2 is connected to the online master module, the switch S2 sends a control signal to the online master module, and the online master module controls power supply to the online slave module.

Further, the first RF module is provided with a first antenna, the second RF module is provided with a second antenna, and the first antenna and the second antenna are used for transmitting and receiving electric signals.

Compared with the prior art, the utility model has the following advantages:

According to the utility model, the on-line main module is used for controlling the switching device, one, two, four or more microphone transmitters in the microphone transmitter group can be allocated to one microphone receiver, and when the connection quantity of the microphone transmitters needs to be reduced, the switching module can close part of connection functions of the microphone receiver, so that the power consumption of the microphone receiver is reduced, the cruising ability of the microphone receiver is increased, and the sound recording time is prolonged.

Drawings

FIG. 1 is a schematic diagram of a microphone switching system;

FIG. 2 is a schematic diagram of a microphone switching system;

FIG. 3 is a schematic diagram of an embodiment III;

FIG. 4 is a schematic diagram of a second embodiment;

FIG. 5 is a schematic diagram of an on-line master module;

FIG. 6 is a schematic diagram of a first signal amplifying module;

FIG. 7 is a schematic diagram of a first RF module;

FIG. 8 is a schematic diagram of an on-line slave module;

FIG. 9 is a schematic diagram of a second signal amplifying module;

FIG. 10 is a schematic diagram of a second RF module;

FIG. 11 is a schematic circuit diagram of a switching module;

Fig. 12 is a circuit diagram of an audio transmission module.

Detailed Description

It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

The technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It is noted that the terms "comprising," "including," and "having," and any variations thereof, in the description and claims of the utility model and in the foregoing figures, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those listed steps or elements but may include other steps or elements not listed or inherent to such process, method, article, or apparatus. In the claims, specification, and drawings of the present utility model, relational terms such as "first" and "second", and the like are used solely to distinguish one entity/operation/object from another entity/operation/object without necessarily requiring or implying any actual such relationship or order between such entities/operations/objects.

Example 1

As shown in fig. 1, this embodiment provides a microphone switching system, including a microphone receiver 1 and a microphone transmitter unit 2, as shown in fig. 2, the microphone receiver 1 includes a switching module 3, an online master module 4, and an online slave module 5, where the online master module 4 is connected with the switching module 3, the microphone transmitter unit 2 is divided into a first transceiver sub-module 11, a second transceiver sub-module 12, a third transceiver sub-module 15, a fourth transceiver sub-module 16 according to the online situation, and the like, the first transceiver sub-module 11, the second transceiver sub-module 12, the third transceiver sub-module 15, and the fourth transceiver sub-module 16 are used to transmit and receive audio signals, the online master module 4 is connected with the first transceiver sub-module 11 and the fourth transceiver sub-module 12, the online master module 4 is connected with the third transceiver sub-module 15 and the fourth transceiver sub-module 16, the connection between the online slave module 4 and the first transceiver sub-module 11 and the second transceiver sub-module 12 can be wireless, the online slave module 5 and the fourth transceiver sub-module 15 and the fourth transceiver sub-module 16 can be connected with the microphone transmitter sub-module 16 respectively, and the microphone transmitter sub-module can be converted into a plurality of microphone transmitter sub-modules 12 in a high-frequency modulation mode according to the situations, and the actual microphone sub-mode, and the microphone transmitter sub-modules can be converted into a plurality of microphone sub-modules, and the microphone sub-modules can be converted into a high-frequency modulation mode, and the microphone sub-module is formed by the microphone transmitter sub-module is further connected with the microphone sub-module 12.

The microphone transmitter group 2 and the microphone receiver 1 start code matching, the online main module 4 controls the online slave module 5 to disconnect or connect the third and fourth link sub-modules 15 and 16 through the switching module 3, the switching module 3 can realize the effect that one microphone receiver 1 is provided with one, two, four or more microphone transmitters (one for short, one for two, one for four, one for many), one for one mode, one for two, one for four, one for many, and the like, so as to obtain one for one mode, one for two mode, one for four mode, one for many mode, and the like, and the microphone receiver 1 and a plurality of microphone transmitters are used online, so that the problem of synchronous recording of a plurality of people can be solved, when the microphone switching system is used, the microphone transmitter group 2 and the microphone receiver 1 are started code matching, and if the microphone receiver online 4 is in one for two modes, the two microphone transmitters are selected to be connected nearest. If the mode is switched from one to four, the connection of the two microphone transmitters connected with the on-line slave module 5 is disconnected, when the on-line master module 4 detects that the PB8 end of the switching module 3 is grounded, the on-line master module 4 sends a signal to the on-line slave module 5 to start the on-line slave module 5, the on-line slave module 5 starts to connect with the microphone transmitters in a code-to-code manner, at the moment, the microphone receiver 1 is changed from one to two to one to four, the switching module 3 switches the connection mode, if the mode is switched from one to four to one to the two, the on-line slave module 5 is controlled by the on-line master module 4 to disconnect the connection with the third and fourth sub-modules 15 and 16, and only the first and second sub-modules 11 and 12 are left to be connected with the on-line master module 4, the on-line master module 4 is controlled to supply power to the on-line slave module 5, so that the on-line slave module 5 does not work, thereby reducing the total energy consumption of the microphone receiver 1, the on-line slave module 5 does not send on-line information to free space, and the connection with the third and fourth sub-module 16 is not searched.

In one embodiment, as shown in fig. 12, the microphone receiver 1 further includes an audio transmission module 6, where the audio transmission module 6 is connected to the online main module 4 and the online slave module 5, the audio transmission module 6 transmits the audio signal received by the online slave module 5 to the online main module 4, in the audio transmission module 6, a mic_p end of the audio transmission module 6 is connected to the online main module 4 with a mic_n end of the audio transmission module 6, and a DACL1 end of the audio transmission module 6 is connected to the online slave module 5 with a DACR end of the audio transmission module 6, so as to transmit the audio signal picked up by the online slave module 5 to the online main module 4; the audio transmission module 6 is used for filtering and noise reduction, and transmits the sound signals received by the online slave module 5 to the online master module 4 after being processed again, and the sound signals are output by the online master module 4, and besides being connected through the audio transmission module 6, the online master module 4 and the online slave module 5 are directly connected through an I2C interface so as to transmit control signals of the online master module 4 to the online slave module 5.

The microphone receiver 1 further includes a first signal amplifying module 14 and a first RF module 13, where the first signal amplifying module 14 is connected to the first RF module 13, and the first RF module 13 receives a main module audio signal of the microphone transmitter unit 2 and transmits the main module audio signal to the first signal amplifying module 14, and the first signal amplifying module 14 processes and transmits the main module audio signal to the online main module 4; the microphone receiver 1 further comprises a second signal amplifying module 18 and a second RF module 17, wherein the second signal amplifying module 18 is connected with the second RF module 17, the second RF module 17 receives the audio signals of the slave module of the microphone transmitter group 2, the first RF module 13 and the second RF module 17 also send, receive on-line signals and the like, and transmit the audio signals of the slave module to the second signal amplifying module 18, the second signal amplifying module 18 processes the audio signals of the slave module and transmits the audio signals of the slave module to the on-line slave module 5, the audio signals of the main module comprise the audio signals of the first on-line sub-module 11 and the second on-line sub-module 12 transmitted to the on-line main module 4, the audio signals of the slave module comprise the audio signals of the third on-line sub-module 15 and the fourth on-line sub-module 16 transmitted to the on-line slave module 5; the first RF module 13 is provided with a first antenna 22, the second RF module 17 is provided with a second antenna 23, the first antenna 22 and the second antenna 23 are used for transmitting and receiving electric signals, the first signal amplifying module 14 and the second signal amplifying module 18 are responsible for signal amplification of channels, as shown in fig. 5 and 6, the on-line main module 4 is connected with the TXRX end of the first signal amplifying module 14 through the bt_rf end, as shown in fig. 7, the ANT end of the first signal amplifying module 14 is connected with the first RF module 13, as shown in fig. 8 and 9, the bt_rf end of the on-line slave module 5 is connected with the TXRX end of the second signal amplifying module 18, as shown in fig. 10, and the ANT end of the second signal amplifying module 18 is connected with the second RF module 17.

In one embodiment, the microphone receiver 1 further includes an audio output module 7, where the audio output module 7 is connected to the online main module 4, and the audio output module 7 outputs a main module audio signal and a slave module audio signal; the audio output module 7 comprises an output unit 8, and the output unit 8 is connected with the online main module 4; the audio output module 7 comprises an ear playing unit 9, the ear playing unit 9 is connected with the online main module 4 and the output unit 8, and the ear playing unit 9 performs digital-to-analog conversion on the main module audio signal and the slave module audio signal output by the online main module 4 and amplifies and transmits the signals to the output unit 8; the output unit 8 comprises an earphone interface 10, the earphone interface 10 is connected with the output unit 8, and the output unit 8 filters and reduces noise of the audio signal and transmits the audio signal to the earphone interface 10.

As shown in fig. 11, the switching module 3 includes a switch S2, in a circuit diagram of the switching module 3, a 2 nd end of the switch S2 is connected to the online master module 4, the switch S2 sends a control signal to the online master module 4, the online master module 4 controls the power supply to the online slave module 5, a 1 st end of the switch S2 is suspended, when the switch S2 is switched to a two-to-one mode, the 2 nd end of the switch S2 is connected to the 1 st end of the switch S2, the switching module 3 feeds back a high level to the online master module 4, and the online master module 4 cuts off the power supply to the online slave module 5; when the switch S2 is switched to a four-out mode, the 2 nd end of the switch S2 is connected with the 3 rd end of the switch S2, the switching module 3 feeds back a low level to the on-line main module 4, the host controls the on-line auxiliary module 5 to start up through the PC3 end of the on-line auxiliary module 5 and the PC4 end of the on-line auxiliary module 5, the on-line auxiliary module 5 is powered on (or any two of the PC2 end, the PC3 end and the PC4 end of the on-line auxiliary module 5 can be used for simulating an I2C interface), an on-line signal is restored to be sent to a free space, and after the matching is successful, the on-line auxiliary module is connected with the third on-line sub-module 15 and the fourth on-line sub-module 16;

In addition, the level can be sent through the external SCM, the external interrupt of the SCM can be triggered by the selective level, namely, the switching module 3 is connected with the on-line slave module 5 through the SCM, and the on-off of the power supply of the on-line slave module 5 is controlled.

Example two

As shown in fig. 4, the on-line master module 4 may be connected to the on-line slave module 5 through the audio transmission module 6 to transmit sound signals, and directly connected to transmit control signals through the analog I2C interface. The on-line slave module 5 transmits the received sound signal to the on-line master module 4. The on-line main module 4 is connected to the switching module 3, and the on-line main module 4 cuts off and opens the power supply of the on-line slave module 5 according to the movement of the switching module 3.

Example III

As shown in fig. 3, the present utility model may further adopt a manner of arranging the switching module 3, the mixing unit 21, and the local oscillation frequency synthesizing unit 20 in the SOC system module 19, where the SOC system module 19 is connected to the CODEC module 18, the first RF module 13, and the second RF module 17, the CODEC module 18 is a CODEC chip, the CODEC module 18 is connected to the audio output module 7, and the CODEC module 18 is used to record and control the audio output module 7 to output audio; the first RF module 13 is connected to a first antenna 22, the second RF module 17 is connected to a second antenna 23, the first RF module 13 is used for controlling the first antenna 22 to receive or transmit signals, and the second RF module 17 is used for controlling the second antenna 23 to receive or transmit signals. The switching module 3 switches the number of the microphone receivers 1 connected with the microphone transmitters from a one-to-four mode to a one-to-two mode; the mixing unit 21 is adapted to mix the local oscillation carrier wave with the voice digital modulation signal to obtain a carrier signal, and the local oscillation frequency synthesizing unit 20 is adapted to synthesize the basic frequency provided by the crystal oscillator into a local oscillation frequency through frequency multiplication, VCO, PLL, etc.; in the SOC system module 19, filtering, amplifying, mixing, intermediate frequency filtering, and demodulation may be performed on the signal.

When the microphone receiver 1 is connected with four microphone transmitters, the sampling rate (for example, 16K) needs to be reduced to ensure the normal communication between the microphone receiver 1 and the microphone transmitters, the sampling rate is still unchanged after the two microphone transmitters are closed, and at the moment, the microphone receiver 1 can be restarted, so that the microphone receiver 1 automatically increases the sampling rate (for example, 32K); the wireless carrier signal with voice digital modulation is amplified by the first signal amplifying module 14 or the second signal amplifying module 18, and then radiated into the air in the form of electromagnetic waves by the vertical inverted-F antenna.

It should be noted that those of ordinary skill in the art will appreciate that the elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Those skilled in the art may implement the described functions using different methods for each specific application, but such implementation should not be considered as beyond the scope of the present utility model, the above-described embodiments are merely preferred embodiments of the present utility model and the technical principles applied, and any changes, modifications, substitutions, combinations, and simplifications made by those skilled in the art without departing from the spirit and principles of the present utility model are intended to be covered by the scope of the present utility model.

Claims (10)

1. A microphone switching system, includes microphone receiver, microphone transmitter group, its characterized in that: the microphone receiver comprises a switching module, an online main module and an online slave module, wherein the online main module is connected with the switching module, the microphone transmitter group comprises a first connector sub-module, a second connector sub-module, a third connector sub-module and a fourth connector sub-module, the online main module is in wireless connection with the first connector sub-module and the second connector sub-module, the online slave module is in wireless connection with the third connector sub-module and the fourth connector sub-module, the microphone transmitter group is started up for code matching with the microphone receiver, and the online slave module is controlled by the switching module to disconnect or connect the third connector sub-module and the fourth connector sub-module.

2. The microphone switching system of claim 1, wherein: the microphone receiver also comprises an audio transmission module, wherein the audio transmission module is connected with the online main module and the online slave module, and the audio transmission module transmits the audio signals received by the online slave module to the online main module.

3. The microphone switching system of claim 1, wherein: the microphone receiver further comprises a first signal amplifying module and a first RF module, wherein the first signal amplifying module is connected with the first RF module, the first RF module receives main module audio signals of the microphone transmitter group, sends and receives on-line signals and transmits the main module audio signals to the first signal amplifying module, and the first signal amplifying module processes the main module audio signals and transmits the main module audio signals to the on-line main module.

4. A microphone switching system according to claim 3, characterized in that: the microphone receiver further comprises a second signal amplification module and a second RF module, wherein the second signal amplification module is connected with the second RF module, the second RF module receives the audio signals of the slave module of the microphone transmitter group and transmits the audio signals of the slave module to the second signal amplification module, and the second signal amplification module processes the audio signals of the slave module and transmits the audio signals of the slave module to the online slave module.

5. The microphone switching system of claim 4, wherein: the microphone receiver also comprises an audio output module, wherein the audio output module is connected with the online main module and outputs processed main module audio signals and slave module audio signals.

6. The microphone switching system of claim 5, wherein: the audio output module comprises an output unit, and the output unit is connected with the online main module.

7. The microphone switching system of claim 6, wherein: the audio output module comprises an ear amplifier unit, the ear amplifier unit is connected with the online main module and the output unit, and the ear amplifier unit performs digital-to-analog conversion on the main module audio signal and the slave module audio signal output by the online main module, amplifies and transmits the signals to the output unit.

8. The microphone switching system of claim 7, wherein: the output unit comprises an earphone interface, the earphone interface is connected with the output unit, and the output unit filters and reduces noise of the audio signal and then transmits the audio signal to the earphone interface.

9. The microphone switching system of claim 1, wherein: the switching module comprises a switch S2, wherein the 2 nd end of the switch S2 is connected with the online main module, the switch S2 sends a control signal to the online main module, and the online main module controls power supply to the online slave module.

10. The microphone switching system of claim 4, wherein: the first RF module is provided with a first antenna, the second RF module is provided with a second antenna, and the first antenna and the second antenna are used for transmitting and receiving electric signals.