CN2264455Y

CN2264455Y - Single carrier wave wireless remote-control microphone

Info

Publication number: CN2264455Y
Application number: CN 96229031
Authority: CN
Inventors: 黄帝文
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-01-05
Filing date: 1996-01-05
Publication date: 1997-10-08
Anticipated expiration: 2006-01-05

Abstract

The utility model relates to wireless microphone device, which is characterized in that a control key assembly and an oscillation signal generating circuit are arranged on a transmitter, and an oscillation circuit is controlled by the key assembly; thus, a plurality of signals which are higher than the audio frequency and have different oscillating frequencies can be correspondingly output, and the signals and sound signals are together modulated by FM to be transmitted in single signal mode. A receiver comprises a frequency demoding circuit, and the receiver is used for receiving an FM signal which is transmitted form the transmitter; then, the FM signal is sent to the frequency demoding circuit after the FM signal is demodulated, and a corresponding frequency decoder is started; thus, a control signal is output and sent to a relevant control circuit; thereby, the control operation is realized, and the transmission and the remote control of the sound are realized.

Description

The wireless remote control microphone apparatus of single carrier wave

The utility model relates to radio microphone device, particularly a kind of radio microphone device with sound transmission and remote control dual-use function.

Wireless microphone is a kind of broadcasting utensil of singing quite easily, and it makes singer's action no longer be subjected to the restriction of microphone conductor length, also can not be difficult for because of the mixed and disorderly arrangement of being entangled with of lead, destroys singer's excitement; And not needing to take on the other hand microphone, the remote controller of another hand-held sound processing apparatus carries out remote control, causes suitable inconvenience in rain.

The wireless microphone of existing tool distant control function, its design all is the purposes that reach remote control by indivedual independently remote control signal transmitting-receiving processing unit, just sound signal is transmitted with FM emission and receiving circuit device, and numerical digit coded telecommand signal then transmits with another infrared and receiving circuit device and handles; Such design, blemish in an otherwise perfect thing be, need two covers independently emission and receiving circuit device, therefore improved the complexity of circuit, and shared volume, the cost of making also increases many for it; Secondly, because infrared ray has suitable directivity, so the singer must interrupt singing, and adjusts the sensing of remote control microphone, could successfully carry out straighforward operation; Be that transmitting range is far away still more, or this design just can't be carried out remote control when having obstacle to cover in the transfer path, therefore still cause sizable puzzlement.

The purpose of this utility model is to provide a kind of wireless remotecontrol microphone apparatus with single carrier wave of sound and remote control signal transmission dual-use function.

The utility model is achieved in that the wireless remote control microphone apparatus, comprises transmitter and receiver, transmitter is by microphone sound head, pre-amplification circuit, FM modulation circuit, and radiating circuit forms, and receiver is by receiving circuit, and audio amplifier circuit forms, wherein:

Transmitter more includes a control key groups and an oscillation signal produces circuit, control key groups control oscillation signal produces circuit, make the some frequencies of oscillation of its corresponding output be higher than pleasant frequency of hearing (being audio frequency), and the mutually different oscillation signal of its frequency of oscillation, after making the FM modulation jointly together with sound signal, carry emission with single FM carrier wave; Then include frequency decoding (Frequency Decoding) circuit with respect to receiver; Receiver receives the FM carrier wave of emission, after demodulation solves, send into this frequency decoding circuit, and use and start corresponding frequency decoder (Frequency Decoder), make its output controlling signal, this controlling signal can be delivered to relevant control circuit, and the operation of controlling realizes that sound transmits and the remote control dual-use function.

The following drawings and embodiment will be described further technical characterictic of the present utility model:

Fig. 1 is the circuit block diagram of a preferred embodiment transmitter of the present utility model.

Fig. 2 is the circuit block diagram of a preferred embodiment receiver of the present utility model.

Fig. 3 is the detailed circuit diagram of a preferred embodiment transmitter of the present utility model.

Fig. 4 is the detailed circuit diagram of a preferred embodiment receiver of the present utility model.

Embodiment:

As Fig. 1, shown in 2, transmitter 1 mainly comprises: a microphone sound head 11, a pre-amplification circuit 12, an oscillation signal generation circuit 13, control key groups 14, a FM modulation circuit 15 and a radiating circuit 16; Receiver 2 then comprises: a receiving circuit 21, a frequency decoding circuit 22 and an audio amplifier circuit 23; Singer's sound signal is via microphone sound head 11 input, after sending into pre-amplification circuit 12 and making processing and amplifying, sends into FM modulation circuit 15; And control key groups 14 comprises a plurality of control buttons, when the singer wants to adjust microphone volume or echo size etc., or cooperation vocal accompany unit, carry out various adjustment, for example accompany volume, accompaniment tone is heightened low or during other general selected songs operations etc., can press the wherein operating key of a certain function of operating key group 14, when pressing this key, promptly can start oscillation signal and produce circuit 13, output one oscillation signal corresponding to pressing operating key, and its frequency of oscillation is higher than the frequency that people's ear can be heard; Oscillation signal is sent into FM modulation circuit 15, and this modulation circuit 15 is the voice emplifying signal of input, and oscillation signal, make the FM modulation process after, send into radiating circuit 16, be written in the radio frequency, after radio frequency amplifies, with single FM carrier wave via antenna emission output; The FM carrier wave of emission output is received via antenna by receiving circuit 21, after high frequency amplification, frequency conversion, intermediate frequency amplification and detection are handled, exports a demodulation signal, sends into audio amplifier circuit 23 and frequency decoding circuit 22; Audio amplifier circuit 23 receives these demodulation signals, make processing and amplifying after, can send into general sound treatment circuit device, do various relevant processing; And frequency decoding circuit 22 more includes a plurality of frequency decoders, and corresponding frequency decoder is exported controlling signal after starting; This controlling signal can be sent into control circuit relevant in the selected songs vocal accompany unit, adjusts the control operation that microphone volume, echo size, accompaniment volume, accompaniment tone are heightened functions such as low or general selected songs and vocal accompaniment control.

As Fig. 3, shown in 4 wherein the sound equipment signal partly, after via transistor Q1 and Q2 signal being amplified, send into FM modulation circuit 15 by 11 inputs of microphone sound head; And control button K1, K2, K3, and start corresponding integrated circuit 131,132,133, export the oscillation signal of a correspondence, send into FM modulation circuit 15; Varicap D1 with the signal of input, is written in the radio frequency in FM modulation mode again, and transistor Q3, Q4, Q5 amplify, and by the collection utmost point (Collector) of Q5, through a transmitting antenna 161, the FM carrier transmit are exported at last; This FM carrier wave is received via a reception antenna 211 by receiving circuit 21 again, does through integrated circuit 212 that high frequency amplifies, frequency conversion, and after integrated circuit 213 is done that intermediate frequency amplifies, detection handles, exports a demodulation signal; Integrated circuit 231 is done this demodulation signal to export after the processing and amplifying again, and behind frequency decoding circuit 22 these demodulation signals of reception, transistor Q6 amplifies signal, send into frequency decoding integrated circuit 221,222,223, and after using the corresponding frequency decoding integrated circuit of startup, this frequency decoding integrated circuit is promptly exported a low level signal, this signal just can directly be sent into the microprocessor in the digital control circuit device, or a switch driving circuit in the analogy control circuit device, carry out control operation.

Be again, in the utility model, the oscillation signal of transmitter produces the design of circuit, the frequency of oscillation of the oscillation signal of its output, can be to be higher than more than the 15KHz frequency, to distinguish to some extent with common people's sound, make the frequency decoding circuit of the receiver in the utility model, its frequency decoding reliability more improves.

More than diagram and explanation only be preferable enforcement situation of the present utility model, and feature of the present utility model is not limited in this, any personage who is familiar with this skill can think easily and modification or equivalent variation, all not from spirit of the present utility model and creation scope.

Claims

1. the wireless remote control microphone apparatus of a single carrier wave comprises transmitter and receiver, and transmitter is by microphone sound head, pre-amplification circuit, FM modulation circuit, and radiating circuit is formed, receiver is by receiving circuit, and audio amplifier circuit forms, and it is characterized in that:

Transmitter more includes: an oscillation signal produces circuit, be the mutually different oscillation signals of the some frequencies of oscillation of output, and its frequency of oscillation is higher than the frequency that people's ear can be heard; One control key groups comprises more than one control button, presses a certain control button, and above-mentioned oscillation signal generation circuit is promptly exported the oscillation signal of a correspondence; Oscillation signal is written in the FM modulation circuit jointly together with sound signal, exports with the FM carrier transmit;

Receiver also includes: a radio frequency decoding circuit, and circuit comprises more than one frequency decoder, is the demodulation signal of reception by receiving circuit output, and uses the corresponding frequency decoder of startup, makes its output controlling signal; Cooperate a relevant control circuit to receive controlling signal again and carry out control operation.

2. the wireless remotecontrol microphone apparatus of a kind of single carrier wave according to claim 1 is characterized in that, the oscillation signal of frequency of oscillation signal generating circuit output wherein, and its frequency of oscillation can be to be higher than more than the 15KHz frequency.

3. the wireless remotecontrol microphone apparatus of a kind of single carrier wave according to claim 1 is characterized in that, it can cooperate a selected songs vocal accompany unit, allows the user when singing, and can directly carry out general selected songs and vocal accompaniment control with the wireless remote control microphone apparatus.