WO2008086675A1 - Système microphone sans fil - Google Patents

Système microphone sans fil Download PDF

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Publication number
WO2008086675A1
WO2008086675A1 PCT/CN2007/002432 CN2007002432W WO2008086675A1 WO 2008086675 A1 WO2008086675 A1 WO 2008086675A1 CN 2007002432 W CN2007002432 W CN 2007002432W WO 2008086675 A1 WO2008086675 A1 WO 2008086675A1
Authority
WO
WIPO (PCT)
Prior art keywords
microphone
receiver
wireless
data transmission
transmission module
Prior art date
Application number
PCT/CN2007/002432
Other languages
English (en)
Chinese (zh)
Inventor
Zhonghuo Wu
Original Assignee
Zhonghuo Wu
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhonghuo Wu filed Critical Zhonghuo Wu
Publication of WO2008086675A1 publication Critical patent/WO2008086675A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R2420/00—Details of connection covered by H04R, not provided for in its groups
    • H04R2420/07—Applications of wireless loudspeakers or wireless microphones

Definitions

  • the present invention relates to a wireless microphone system. Background technique
  • Wireless microphones were widely used in the late 1980s. At that time, they used simple IX oscillator loop circuits and FM FM to transmit voice, and the frequency stability was poor.
  • wireless microphones began to use a large number of quartz crystal frequency locking technology, which enabled it to work at a highly stable working frequency, greatly improving the system's operational reliability.
  • quartz crystal frequency locking technology which enabled it to work at a highly stable working frequency, greatly improving the system's operational reliability.
  • many frequencies interfered with each other, causing system instability. Therefore, products using PLL frequency synthesis technology have begun to solve interference problems in foreign countries, but this technology has followed The problem is that the operation is very complicated, and the receiver and microphone should be separated for independent adjustment.
  • the wireless microphone system comprises a wireless microphone microphone and a wireless microphone receiver, wherein: the system uses two channels of information transmission between the microphone and the receiver, and one of the channels is voice transmission, and is responsible for transmitting the sound information received by the microphone to the receiver; The other is RF wireless data transmission, which is responsible for transmitting control commands and/or status information between the receiver and the microphone.
  • the wireless microphone system adopts a two-way information transmission mechanism, one is voice transmission, and is responsible for transmitting the sound information received by the microphone to the receiver; the other is RF wireless data transmission, which is responsible for transmitting between the receiver and the microphone.
  • the control command and status information are used to implement wireless data communication between the receiver and the microphone through the RF wireless data transmission circuit. According to different needs, it can be realized 1.
  • the frequency of the microphone can be quickly synchronized with the working frequency of the receiver. It is not necessary to separate the receiver and the microphone for independent adjustment, or it can be completed.
  • the invention utilizes the mature RF wireless data transmission module as a hardware platform, and the single-chip microcomputer control technology flexibly calls different softwares to realize the receiver multi-function wireless microphone remote control.
  • Figure 1 is a block diagram showing the structure of a microphone of the present invention
  • FIG. 2 is a block diagram showing the structure of a receiver of the present invention
  • Figure 3 is a waveform diagram of a pilot code of an RF wireless data communication code
  • Figure 4 is a waveform diagram of the communication data "0" of the RF wireless data communication code
  • Figure 5 is a waveform diagram of the communication data "1" of the RF wireless data communication code
  • Figure 6 is a waveform diagram of RF wireless data communication coding
  • FIG. 7 is a block diagram of the RF wireless data communication data code. detailed description
  • a wireless microphone system includes a wireless microphone receiver and a wireless microphone microphone, and the microphone may be a handheld, a lavalier or a desk.
  • the wireless microphone receiver includes a receiver main circuit and a main circuit.
  • wireless microphone microphone includes microphone main circuit, connection and main circuit pickup and audio processing, transmitting circuit and microphone RF wireless data transmission module, receiver wireless voice
  • the processing and output circuit and the microphone pickup and audio processing, and the operating frequency of the transmitting circuit are respectively controlled by the respective main circuits, and the two are realized in the case of the same working frequency to realize the wireless data transmission connection, and the receiver RF wireless data transmission module
  • the main circuit of the receiver comprises a single chip microcomputer, a memory connected to the single chip microcomputer, an operation keyboard and an information display device, and the single chip computer has a connection port for connecting the wireless voice receiving processing and output circuit and the receiver RF wireless data transmission module;
  • the microphone main circuit comprises a single chip and a connection
  • the memory of the single chip microcomputer has a connection port for connecting sound pickup and audio processing, a transmitting circuit and a microphone RF wireless data transmission module.
  • the RF wireless data transmission module for transmitting control commands and/or status information between the receiver and the microphone is composed of an antenna, an RF wireless data communication module, and a codec circuit, and the RF wireless data communication is performed.
  • the module is connected to the connection port of the main circuit through a codec circuit.
  • the receiver main circuit further includes a data acquisition module, wherein the output end of the data acquisition module is connected to the single chip microcomputer, and the input end is connected to the audio sample circuit, so that the receiver performs interference spectrum analysis.
  • the receiver main circuit further includes a data collection module, the output end of the data acquisition module is connected to the single chip microcomputer, and the input end is connected to the state acquisition circuit for displaying various states, which is convenient for collecting various state information, and sending back to the reception. Machine, it is convenient for the console to master the microphone usage.
  • the input end of the data acquisition module can also be connected to the battery voltage sampling circuit, so as to conveniently display the battery power information on the microphone or send the battery power and the like to the receiver through the RF wireless data communication module of the microphone, so that the console can grasp the microphone. Battery usage.
  • the microphone main circuit may further include an operation keyboard and a display device connected to the single chip microcomputer, so as to facilitate various settings from the microphone end.
  • the single-chip microcomputer of the microphone main circuit has a connection port connected to the sound collection and audio processing and transmission circuit through a sensitivity control circuit, and the sensitivity control command of the receiver is transmitted to the microphone through the RF wireless data communication module, and the sensitivity is controlled by the microphone main circuit.
  • the circuit controls the sensitivity of the microphone.
  • the wireless microphone system of the present invention will be further described in detail below.
  • the "RF wireless data communication" circuit set by this system works as follows - the circuit uses a practical codec circuit and two pairs of high-performance RF wireless data communication modules, a pair of receivers and microphones, to realize two MCUs. Wireless duplex communication. Working process: The MCU sends the data to the encoding circuit for encoding. After encoding, it is sent to the RF wireless transmitting module to transmit a radio frequency signal through the antenna. The information is received by the antenna and sent to the RF wireless receiving module. The decoding circuit is decoded and sent to the MCU for processing. . The data transmission and reception are controlled by the MCU software.
  • the data communication rules are composed of four parts: the guide code, the synchronization code, the data and the data inversion.
  • the data is composed of the instruction code, the ID code and the operation data.
  • the waveform of the wireless communication rule is shown in Figure 3. 4, 5, 6, and 7, wherein "X" in Figures 3, 4, and 5 refers to the minimum time unit for generating a waveform of one microsecond.
  • Each receiver has its fixed ID number, which is determined at the factory. Both the adjustment microphone and the receiver enter the "microphone binding" function. The receiver sends the ID number and the binding command to the microphone through the RF wireless data transmission module. After receiving the binding command, the microphone stores the received ID code to the original The ID code is covered to realize the binding of the microphone to the receiver. Only after the microphone and the receiver are bound one-to-one, the microphone and the receiver can perform wireless data communication, that is, the microphone can only be received by its binding. Machine control, this can avoid the wrong operation of other units when the multi-machine is used at the same time. Both the microphone and the receiver enter the "microphone binding" function through the "keyboard” and display menu.
  • the MCU of the MCU will use the RF wireless data transmission module to set the receiver ID number and binding command.
  • the microphone After being sent to the microphone, after receiving the binding command, the microphone stores the ID code in the EEPR0M memory to overwrite the ID code in the original EEPR0M, and the unbound microphone directly stores the ID code.
  • the intelligent frequency chasing function is implemented, and the "frequency chasing" function of the receiver is entered.
  • the receiver After the receiver starts the interference spectrum analysis in its working frequency band, it locks in a non-interfering source frequency point, and the receiving and receiving system transmits the data through the RF data.
  • the module sends a frequency synchronization command to the microphone to achieve fast frequency synchronization and avoid frequency interference.
  • the "frequency chase lock" function of the receiver is entered through the "keyboard” and the display menu.
  • the receiver calculates the frequency data in the MCU of the working frequency band, and then serially inputs the phase-locked loop frequency synthesizer, and then passes the audio after processing.
  • the sampling circuit returns data to the MCU of the single-chip microcomputer, and the MCU of the single-chip microcomputer starts to judge whether the frequency has interference. If there is a frequency source with interference, the MCU of the single-chip microcomputer continues to scan the next frequency until the frequency of the interference-free frequency is scanned, and the frequency data is serially input.
  • the phase-locked loop frequency synthesizer after the hardware circuit processes, the working frequency of the receiver is immediately locked, and the frequency synchronization command is sent to the microphone through the RF data transmission module. After the microphone receives the data, the MCU calculates the frequency data serial input phase-locked loop.
  • the frequency synthesizer after the hardware circuit is processed, the microphone will immediately emit the same operating frequency as the receiver, achieving fast frequency synchronization and avoiding frequency interference.
  • the receiver system After the sensitivity selection is determined, the receiver system transmits the data through the data.
  • the module sends a sensitivity adjustment command, and after the microphone receives the data processing, it is adjusted by the sensitivity adjustment circuit. This operation allows the operator to control the microphone status in real time in different situations such as personal singing, speaking, and chorus.
  • the receiver system sends the RF power adjustment command through the RF data transmission module, and the microphone receives the data processing. After that, enter the corresponding power working mode.
  • the microphone automatically sends a set of status information (battery power, signal reception intensity, sensitivity, working mode, etc.) to the receiver at intervals. After receiving the data, the receiver saves the data and simultaneously displays the relevant status through the display after being processed by the MCU. information.
  • a set of status information battery power, signal reception intensity, sensitivity, working mode, etc.
  • the system of the present invention can also realize real-time control of other working state information of the microphone through the receiver.

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Transmitters (AREA)

Abstract

Système microphone sans fil comprenant un récepteur de microphone sans fil et un microphone sans fil. Le récepteur de microphone sans fil comprend un circuit principal, un circuit de réception et de sortie de son sans fil connecté au circuit principal et un module de transmission de données sans fil pour RF de récepteur. Le microphone sans fil comprend un circuit principal de microphone, un circuit de prise de son et de traitement et transmission audio connecté au circuit principal, et un module de transmission de données sans fil pour RF de microphone, et les fréquences de fonctionnement du circuit de traitement de réception et de sortie de son et du circuit du récepteur et du circuit de prise de son et de traitement et transmission audio audio du microphone sont respectivement contrôlés par chaque circuit principal, et termine la connexion de transmission de données sans fil avec la même fréquence de fonctionnement. Le module de transmission de données sans fil pour RF de récepteur et le module de transmission sans fil pour RF de microphone terminent la connexion de transmission de données sans fil de la commande de contrôle et/ou d'informations d'état entre le récepteur et le microphone.
PCT/CN2007/002432 2007-01-16 2007-08-14 Système microphone sans fil WO2008086675A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200710026464XA CN101009492B (zh) 2007-01-16 2007-01-16 无线麦克风系统
CN200710026464.X 2007-01-16

Publications (1)

Publication Number Publication Date
WO2008086675A1 true WO2008086675A1 (fr) 2008-07-24

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ID=38697690

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2007/002432 WO2008086675A1 (fr) 2007-01-16 2007-08-14 Système microphone sans fil

Country Status (2)

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CN (1) CN101009492B (fr)
WO (1) WO2008086675A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106231456A (zh) * 2016-09-14 2016-12-14 武汉智能鸟无人机有限公司 一种多路无线麦克风

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101605245B (zh) * 2008-06-12 2012-07-18 上海航空电器有限公司 一种自适应无线视频倒车系统
US20120108282A1 (en) * 2010-08-25 2012-05-03 Qualcomm Incorporated Methods and apparatus for power control and interference management in wireless microphone transmission systems
CN102036138B (zh) * 2010-12-21 2015-04-08 杨志豪 无线麦克风系统及其自动安装调试方法
CN103036690B (zh) * 2012-12-11 2015-04-29 恩平市海天电子科技有限公司 一种无线会议系统
CN107343233A (zh) * 2017-09-01 2017-11-10 江西创成微电子有限公司 一种基于遥控器控制的话筒
CN108446093A (zh) * 2018-03-15 2018-08-24 广东小天才科技有限公司 一种基于麦克风设备的信息交互方法、系统及相关设备
CN109547880A (zh) * 2018-10-24 2019-03-29 深圳市咔莱科技有限公司 一种宽动态范围麦克风
CN109819361B (zh) * 2019-03-26 2024-02-09 广州市华维世电子科技有限公司 一种单层或多层壳体的智能防摔无线话筒
CN111586510B (zh) * 2020-04-10 2021-07-23 深圳市爱图仕影像器材有限公司 一种无线麦克风装置及其使用方法
CN114125612A (zh) * 2021-10-09 2022-03-01 吴鲁宁 一种双向无线监听话筒

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1093449A (ja) * 1996-09-13 1998-04-10 N H K Technical Service:Kk ワイアレスマイクロフォンの制御方法
CN1417952A (zh) * 2001-10-31 2003-05-14 松下电器产业株式会社 无线话筒系统、语音接收设备和无线话筒
WO2004109701A1 (fr) * 2003-06-10 2004-12-16 Enter Tech Co. Ltd. Signal hf de bloc de reception de donnees de karaoke et systeme de karaoke utilisant ce signal
CN1601927A (zh) * 2003-09-28 2005-03-30 嘉强电子股份有限公司 无线麦克风发射与接收频率自动追踪锁定装置

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH1093449A (ja) * 1996-09-13 1998-04-10 N H K Technical Service:Kk ワイアレスマイクロフォンの制御方法
CN1417952A (zh) * 2001-10-31 2003-05-14 松下电器产业株式会社 无线话筒系统、语音接收设备和无线话筒
WO2004109701A1 (fr) * 2003-06-10 2004-12-16 Enter Tech Co. Ltd. Signal hf de bloc de reception de donnees de karaoke et systeme de karaoke utilisant ce signal
CN1601927A (zh) * 2003-09-28 2005-03-30 嘉强电子股份有限公司 无线麦克风发射与接收频率自动追踪锁定装置

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106231456A (zh) * 2016-09-14 2016-12-14 武汉智能鸟无人机有限公司 一种多路无线麦克风

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CN101009492B (zh) 2012-02-29
CN101009492A (zh) 2007-08-01

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