WO2007003074A1 - Équipement acoustique extérieur sans fil - Google Patents

Équipement acoustique extérieur sans fil Download PDF

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Publication number
WO2007003074A1
WO2007003074A1 PCT/CN2005/001109 CN2005001109W WO2007003074A1 WO 2007003074 A1 WO2007003074 A1 WO 2007003074A1 CN 2005001109 W CN2005001109 W CN 2005001109W WO 2007003074 A1 WO2007003074 A1 WO 2007003074A1
Authority
WO
WIPO (PCT)
Prior art keywords
wireless
frequency
amplifier
audio
wireless receiver
Prior art date
Application number
PCT/CN2005/001109
Other languages
English (en)
Chinese (zh)
Inventor
Shuzhe Fang
Original Assignee
Shuzhe Fang
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 Shuzhe Fang filed Critical Shuzhe Fang
Publication of WO2007003074A1 publication Critical patent/WO2007003074A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones

Definitions

  • the present invention relates to an audio device, and more particularly to a wireless outdoor audio device.
  • Background Art A conventional outdoor sound is an audio frequency of an indoor amplifier ⁇ passing through a step-up transformer 2, and a connection line is transmitted to the outside, and is connected to the horn 4 through an audio step-down transformer 3 to emit a sound.
  • the drawback is that the connection line is complicated and the installation work is large.
  • SUMMARY OF THE INVENTION It is an object of the present invention to provide a wireless outdoor audio device that is easy to install, reliable in operation, and capable of obtaining a variety of signals.
  • the invention relates to a wireless outdoor audio device, which is composed of a wireless transmitter and a wireless receiver;
  • the wireless transmitter is composed of a volume control circuit, a frequency generator, a high frequency amplifier and a band pass filter, the volume
  • the control circuit adds the volume to the frequency generator, and the frequency generator modulates the signal and sends it to the high-frequency amplifier for amplification.
  • the band-pass filter fixes the signal amplified by the high-frequency amplifier and transmits it through the antenna.
  • the wireless receiver includes an input loop, a difference frequency amplifier, an audio amplifier, a solar battery, and a horn.
  • the input loop selects a frequency and sends the selected frequency signal to a difference frequency amplifier, and the difference frequency amplifier changes the high frequency.
  • the intermediate frequency is converted into an audio signal, which is amplified by the audio amplifier and output from the rab eight, and the solar cell supplies power to the circuit.
  • An audio signal input interface is provided on the wireless transmitter.
  • An MP3 interface, a MIC jack, and a radio are provided on the wireless transmitter.
  • the wireless receiver is also connected in series with the battery.
  • the wireless receiver further includes a subwoofer with a low frequency filter serially connected to the input end of the subwoofer audio amplifier, filtering the middle and high frequency of the audio to only reproduce the low frequency portion and being amplified by the audio amplifier. After output from the woofer.
  • the wireless transmitter and the wireless receiver of the present invention adopt a wireless electrical connection manner, and simultaneously use a solar battery and a storage battery on the wireless receiver, and provide a stable working power supply of the wireless receiver by the solar battery and the storage battery.
  • the outdoor audio can be reliably operated without any connection (power cord or audio cable), which greatly facilitates the user's use and installation, and expands its use range; and can add different inputs as needed.
  • Ports such as MIC, MP3, etc. are more convenient to use, and the special ultra-low speaker can be added to enhance the sound effect, and multi-partition can also be used for partition broadcasting.
  • the outdoor sound can be installed in outdoor decorations such as stone carvings or in various corners of the courtyard, so that it has various beautiful shapes.
  • FIG. 1 is a schematic view of a conventional outdoor acoustic structure
  • Figure 2 is a circuit diagram of a wireless receiver of the present invention
  • FIG. 3 is a circuit diagram of an embodiment of a wireless transmitter of the present invention.
  • FIG. 4 is a circuit diagram of two embodiments of a wireless transmitter of the present invention.
  • Figure 5 is a circuit diagram of a third embodiment of the wireless transmitter of the present invention.
  • Figure 6 is a circuit diagram of a fourth embodiment of the wireless transmitter of the present invention.
  • FIG 12 is a circuit diagram of a wireless receiver of the present invention having enhanced bass sound quality.
  • the present invention has five ways to transmit audio signal converted radio waves to the outdoor wireless receiver 2 through the wireless transmitter 1, and the outdoor wireless receiver 2 converts the radio signals into audio signals, by: it: p eight sounds.
  • the five ways are as follows:
  • the first method (as shown in FIG. )) is to transmit an audio signal F such as a CD or a DVD to the outdoor wireless receiver 2 through the wireless transmitter 1, and activate the sound of the single program, and can connect one or several outdoor sounds at the same time.
  • the circuit uses the circuit structure shown in Figure 3.
  • the second mode (shown in Figure 8) is a wireless transmitter 1B that adds a radio function A/FM to the original, which allows the present invention to choose between audio and radio.
  • the circuit is constructed using the circuit shown in Figure 4.
  • the third and fourth modes are based on the first two methods.
  • the connector and the MC socket that can directly insert the MP3 player into the 1C of the wireless transmitter are added.
  • the transmitter 1 can simultaneously select audio signals, A/FM radio, MP3 playback, and MIC talk.
  • the circuit uses the circuit structure shown in FIG.
  • the five methods are based on the above different audio input methods.
  • the wireless transmitter 1D can be divided into several transmission frequencies, or simultaneously transmitted separately, so that the wireless receivers 2 in different zones simultaneously Or the audio signal transmitted by the wireless transmitter 1 is played separately, and the effect of simultaneous or partition playback has been achieved.
  • the circuit uses the circuit structure shown in Figure 6.
  • the present invention designs the following circuit structure. As shown in Figs. 2 and 3, the present invention is a wireless outdoor audio device which is composed of a wireless transmitter 1 and a wireless receiver 2.
  • the wireless transmitter 1 is composed of a volume control circuit 11, a frequency generator 12, a high frequency amplifier 13, a band pass filter 14, and an antenna 15.
  • the volume control circuit 11 adds the volume to the frequency generator 12, and the frequency generator 12 modulates the signal and sends it to the high frequency amplifier 13 for amplification.
  • the bandpass filter 14 amplifies the signal amplified by the high frequency amplifier 13.
  • the frequency is fixed and transmitted through the antenna 15.
  • the wireless transmitter 1 further has an audio signal interface AUX, a radio interface AM FM, an MP3 interface, and a MIC jack.
  • the frequency generator 12 includes an audio oscillator G and an amplifier A1, which can use a 2SC9D18 chip.
  • the high frequency amplifier 13 includes an amplifier A2 which can employ an SH10 chip.
  • the wireless receiver 2 includes an input circuit 21, a difference frequency amplifier 22, an audio amplifier 23, a solar battery 24, a battery 25, and a horn 26.
  • the input circuit 21 selects a frequency and selects The subsequent frequency signal is sent to the difference frequency amplifier 22, and the difference frequency amplifier 22 changes the high frequency to the intermediate frequency, and then changes the intermediate frequency to an audio signal, which is amplified by the audio amplifier 23 and output from the speaker 26.
  • the solar battery 24 and the battery 25 are used to supply power to the circuit.
  • the input loop 21 and the difference frequency amplifier 22 include an operational amplifier IC1, which can be a CX1191S chip.
  • the audio amplifier 23 includes an operational amplifier IC2, which can be a TDA2822 chip.
  • the wireless receiver 2 can have multiple parts and can be installed in different places, such as stone carvings, pavilions, and the like.
  • the wireless receiver 3 can be specially designed as a receiver for ultra-low speakers.
  • the wireless receiver 3 includes an input circuit 31, a difference frequency amplifier 32, a low frequency filter 33, an audio amplifier 34, a solar battery 35, a battery 36, and a woofer 37.
  • the frequency is selected and the selected frequency signal is sent to the difference frequency amplifier 32.
  • the difference frequency amplifier 32 changes the high frequency to an intermediate frequency, and then changes the intermediate frequency to an audio signal.
  • the low frequency filter 33 is serially connected to the audio amplifier 34.
  • the input terminal is filtered by the low frequency filter 33 and amplified by the audio amplifier 34, and the middle and high frequency of the audio is filtered out to reproduce only the low frequency portion and output from the woofer 36.
  • a solar battery 35 and a battery 36 are used to supply power to the circuit.
  • the input circuit 31 and the difference frequency amplifier 32 include an operational amplifier IC1, which can be a CX1191S chip.
  • the audio amplifier 34 includes an operational amplifier IC2, the operational amplifier IC2 can employ a TDA2822 chip, and the low frequency filter 33 can employ an LC filter.
  • the use of this wireless receiver can better reflect the bass sound quality and increase the overall system sound playback.

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Circuits Of Receivers In General (AREA)
  • Circuit For Audible Band Transducer (AREA)
  • Transmitters (AREA)

Abstract

L’invention concerne un équipement acoustique extérieur sans fil composé d’un émetteur sans fil et d’un récepteur sans fil. Ledit émetteur sans fil comprend un circuit de commande de volume, un générateur de fréquence, un amplificateur haute fréquence et un filtre passe-bande ; ledit récepteur sans fil contient un circuit d’importation, un amplificateur à fréquence différentielle, un amplificateur audio, une batterie solaire et un klaxon, ladite batterie solaire fournissant l’alimentation du circuit. Le mode de connexion électrique sans fil s’utilise entre l’émetteur sans fil et le récepteur sans fil, et l’on emploie la batterie solaire et l’accumulateur dans le récepteur en même temps, la batterie solaire et l’accumulateur fournissant une alimentation de travail stable pour le récepteur sans fil sans circuit (circuit d’alimentation ou circuit acoustique) permettant au son de fonctionner correctement en plein air, d’où un plus grand confort pour l’utilisateur.
PCT/CN2005/001109 2005-07-01 2005-07-25 Équipement acoustique extérieur sans fil WO2007003074A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200520061088.4 2005-07-01
CNU2005200610884U CN2859976Y (zh) 2005-07-01 2005-07-01 无线室外音响设备

Publications (1)

Publication Number Publication Date
WO2007003074A1 true WO2007003074A1 (fr) 2007-01-11

Family

ID=37604082

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2005/001109 WO2007003074A1 (fr) 2005-07-01 2005-07-25 Équipement acoustique extérieur sans fil

Country Status (2)

Country Link
CN (1) CN2859976Y (fr)
WO (1) WO2007003074A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101938684A (zh) * 2010-09-17 2011-01-05 文创太阳能(福建)科技有限公司 可移动的太阳能音箱

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201210749Y (zh) * 2008-05-12 2009-03-18 陈文良 一种新型太阳能无线音响系统
CN102026076A (zh) * 2009-09-11 2011-04-20 台湾驻极体电子股份有限公司 太阳能驻极体换能器及低耗能驻极体换能器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2269025Y (zh) * 1995-12-08 1997-11-26 陈杉员 免配线扬声器
CN2372857Y (zh) * 1999-04-07 2000-04-05 张少持 无线信号传送接收有源音箱
CN1305272A (zh) * 2001-03-02 2001-07-25 成都天奥实业有限公司 无线音响系统

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2269025Y (zh) * 1995-12-08 1997-11-26 陈杉员 免配线扬声器
CN2372857Y (zh) * 1999-04-07 2000-04-05 张少持 无线信号传送接收有源音箱
CN1305272A (zh) * 2001-03-02 2001-07-25 成都天奥实业有限公司 无线音响系统

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101938684A (zh) * 2010-09-17 2011-01-05 文创太阳能(福建)科技有限公司 可移动的太阳能音箱

Also Published As

Publication number Publication date
CN2859976Y (zh) 2007-01-17

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