CN1722630A - System for wireless transmission, receiving, and amplification of voice - Google Patents
System for wireless transmission, receiving, and amplification of voice Download PDFInfo
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- CN1722630A CN1722630A CN 200410069206 CN200410069206A CN1722630A CN 1722630 A CN1722630 A CN 1722630A CN 200410069206 CN200410069206 CN 200410069206 CN 200410069206 A CN200410069206 A CN 200410069206A CN 1722630 A CN1722630 A CN 1722630A
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Abstract
This invention discloses a voice wireless transmission and receiving enlarging system, in addition to a wireless transmission device and a receiving enlarging device, wherein the wireless transmission device is used for coding the analog form voice signal to meet the Blue Tooth wireless transmission standard, and then transmitting the voice; the receiving enlarging device is used for receiving the sound signal, and outputting after enlarging by the analog / data power amplifier. Said system can be connected with different multimedia broadcast devices, wirelessly receiving and broadcasting the sound signal in the multimedia.
Description
Technical field
The present invention relates to the wireless transmission of a kind of sound and receive amplification system, particularly utilize the wireless transmission of sound and reception amplification system of blue tooth radio network transmission standard.
Background technology
The audio-visual multimedia playing device, for example DVD dials the machine of putting, and has popularized in general family, and the home theater system that is equipped with 5.1 sound channel loudspeaker is also popularized gradually in general popular family.But when installing loudspeaker in purchase family theater is gone back home, most consumers can find, in the part of postposition around loudspeaker, wiring is a burden, except tediously long being difficult for of connecting up, also destroy the decoration of existing house easily, influence attractive in appearancely, therefore, a lot of consumers simply throw postposition aside around loudspeaker; Cause the unnecessary wasting of resources and visual and sound effects not good, can not reach the demand and the effect of so-called family theater.
In view of this, wireless around loudspeaker satisfy in response to and give birth to.The wireless technology that product in the market is used, distinguish haply several, first, 2.4GHz the distinctive transmission technology of frequency band, adopt non-standard transformat, incompatible in the wireless module of other manufacturer, generally have 5～8 channels and can set up selection on their own for the consumer.The second, the transmission technology of 2.4GHz IEEE802.11b/g WLAN.The 3rd, IrDA infrared transmission technology.
Above Radio Transmission Technology can satisfy really for wireless demand around loudspeaker, but also derive new problem to be solved.Except the infrared transmission technology, other Radio Transmission Technology has mutual interference problem easily because all be on the fixing frequency band, influences receiving quality, causes sound generating noise or interruption.Sound is different from image, and flashing of image moment can't cause too big puzzlement to most of people, and sound one has flaw to take place, and that listens comes out at once.Especially in wireless network (IEEE802.11b/g), often there is multiple device to work on the identical 2.4GHz frequency band, cause the phase mutual interference, and the lower side of power causes signal interruption easily.At this problem, common to overcome mode be to strengthen transmitting power, possessing the quality of sound, but can cause the interruption of wireless network or frequency range to descend.
And IrDA infrared transmission technology also can cause the interruption of sound equally because of transmitting and angle that receives and the problem of covering, and places eminence unless will receive with sending and receiving module, because walking about of people goes to have influence on infrared transmission, causes sound interruption to avoid.
In addition, as shown in Figure 1, be that radio receiving transmitting module is placed enlarger and loudspeaker.Multimedia playing apparatus 10 can be with multi-media signal decoding and output sound and signal of video signal, and directly by display 20 outputs, voice signal then is sent to enlarger 30 and handles back output signal of video signal.Include decoder 31, digital analog converter 32, encoder 33, amplifier 34 and conveyer 35 in the enlarger 30.Decoder 31 is in order to decipher out voice signal the voice signal of different sound channels, as being example with 5.1 sound channels, voice signal after the decoding can be divided into left front sound channel FL (Front Left), right front channels FR (FrontRight), center channel C (Center), supper bass sound channel SW (Subwoofer), left back surround channel SL (Surround Left) and right back surround channel SR (Surround Right), conversion of signals after digital analog converter 32 will be deciphered becomes analog signal, exports first loudspeaker 41 to after being amplified by amplifier 34 again, second loudspeaker 42, the 3rd loudspeaker 43 and the 4th loudspeaker 44.Sound signal encoding after 33 of encoders will be deciphered becomes corresponding transmission of wireless signals transmission standard, is transmitted by conveyer 35 again.Built-in receiver 451 and 461 in the 5th loudspeaker 45 and the 6th loudspeaker 46, the signal that is received is after decoder 452,462 decodings, again by digital analog converter 453,463 conversions, through after the channel selector 454,464, amplify by the 5th loudspeaker 45 and 46 outputs of the 6th loudspeaker by amplifier 455,465.The whole group of the other purchase again of consumer's palpus family theater enlarger contains wireless speakers or independent wireless postposition adds transmitter module around loudspeaker, spends the nature increase much; And original family's theater of purchasing also must continue to throw aside around loudspeaker.
Therefore, at present in the wireless rearmounted surrounding system of family's theater, can overcome whether whether the interference of wireless transmission, original loudspeaker can continue to use and whether can be by as under the Considerations such as wireless speakers use independently, present home theater system exists really treats improved space.And a kind of sound radio transmission device that can be applicable to the different multimedia playing device and can resist with band interference also is a technical scheme of demanding needs at present urgently with receiving amplifying device.
Summary of the invention
Technical problem to be solved by this invention provides the wireless transmission of a kind of sound and receives amplification system, has the phase mutual interference to solve existing Radio Transmission Technology, and influences the problem of receiving quality.
For achieving the above object, the invention provides a kind of sound radio transmission device, optionally be connected with a multimedia playing apparatus, this multimedia playing apparatus is exported a voice signal at least, this voice signal is an analog form, this transfer system includes: an analog-digital converter is converted to the voice signal of digital form in order to the voice signal with this analog form; One encoder is connected with this analog-digital converter, in order to the voice signal of this digital form to meet the Bluetooth transmission standard code; And-the Bluetooth transmission device, be connected with this encoder, in order to transmit this coded sound signal.
For reaching above-mentioned purpose, sound wireless receiving amplifying device provided by the present invention includes-Bluetooth Receiver, in order to receive a voice signal that meets a digital form of Bluetooth transmission standard; One decoder is connected with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard; One digital analog converter or a digital audio pulse-width regulating device are connected with this decoder, are converted to analog form or pulse wave form in order to this voice signal after will deciphering; And an analog or digital power amplifier, be connected with this digital analog converter or digital audio pulse-width regulating device, in order to amplify the voice signal of this simulation or pulse wave form.
For reaching above-mentioned purpose, the wireless transmission of sound provided by the present invention with receive amplification system, include a wireless voice conveyer, transmit after sound signal encoding with this analog form becomes to meet the Bluetooth wireless transmission standard in order to transmit; And one wireless voice receive amplifying device, amplify this and meet the voice signal of Bluetooth wireless transmission standard in order to receive.
Technique effect of the present invention is:
The present invention is independently to transmit and to receive amplification system, have can with the advantage of present system combination.The present invention can be applicable to any multimedia playing apparatus, can overcome and improve the sound wireless transmission and disturb, and can be used as the independently wireless output amplification system of sound.
Further describe specific embodiments of the invention below in conjunction with accompanying drawing.
Description of drawings
Fig. 1 is the wireless theater subsystem that prior art disclosed;
Fig. 2 is disclosed wireless transmission of sound and reception amplification system;
Fig. 3 is another embodiment of disclosed sound wireless receiving amplifying device;
Fig. 4 is an embodiment again of disclosed sound wireless receiving amplifying device; And
Fig. 5 is the another embodiment of disclosed sound wireless receiving amplifying device.
Wherein, description of reference numerals is as follows:
The left front sound channel of FL
The FR right front channels
The C center channel
SW supper bass sound channel
The left back surround channel of SL
The right back surround channel of SR
10 multimedia playing apparatus
20 displays
30 enlargers
31 decoders
32 digital analog converters
33 encoders
34 amplifiers
35 conveyers
41 first loudspeaker
42 second loudspeaker
43 the 3rd loudspeaker
44 the 4th loudspeaker
45 the 5th loudspeaker
46 the 6th loudspeaker
451 receivers
461 receivers
452 decoders
462 decoders
453 digital analog converters
463 digital analog converters
454 channel selector
464 channel selector
455 amplifiers
465 amplifiers
50 wireless voice conveyers
51 analog-digital converters
52 encoders
53 bluetooth conveyers
60 wireless voice receiving systems
61 Bluetooth Receivers
62 decoders
63 digital analog converters
64 simulated power amplifiers
65 digital audio pulse-width regulating devices
66 digital power amplifiers
The 67MP3 decoder
68 digital audio signal processors
69 microcontrollers
Embodiment
Please refer to Fig. 2, is example with the home theater system, has shown wireless transmission of disclosed sound and the system architecture diagram that receives amplification system.As shown in the figure, formed by a sound radio transmission device 50 and a sound wireless receiving amplifying device 60, the wireless transmission of sound with receive amplification system and optionally be connected with-multimedia playing apparatus 10 (dialling the machine of putting) as DVD, this multimedia playing apparatus 10 is exported a voice signal and signal of video signal at least, and wherein signal of video signal is shown by display 20.
The voice signal of multimedia playing apparatus 10 optionally is connected with an enlarger 70, in order to amplify the voice signal of multimedia playing apparatus 10 outputs, voice signal after the amplification such as left front sound channel, right front channels, center channel, supper bass sound channel are exported by first loudspeaker 41, second loudspeaker 42, the 3rd loudspeaker 43 and the 4th loudspeaker 44 by wired mode respectively.
In this embodiment, disclosed sound radio transmission device 50 and sound wireless receiving amplifying device 60 are directly applied in the present home theater system, by among the figure as can be known, left back surround channel and right back surround channel that multimedia playing apparatus 10 is exported are connected in sound radio transmission device 50, transmit voice signal to sound wireless receiving amplifying device 60 by Bluetooth transmission standard radio ground, receive and amplify the back by loudspeaker 45 and 46 outputs.Just complete thus realized family's theater high-quality wireless around audio-visual enjoyment with represent.
Sound radio transmission device 50 transmits after becoming to meet the Bluetooth wireless transmission standard in order to the sound signal encoding with analog form.This meets the voice signal of Bluetooth wireless transmission standard to sound wireless receiving amplifying device 60 in order to receive amplification.Sound radio transmission device 50 includes an analog-digital converter 51, an encoder 52 and a Bluetooth transmission device 53.Wherein analog-digital converter 51, are converted to the voice signal of digital form in order to the voice signal with analog form, and the voice signal after the coding meets I2S (Inter-IC Sound) form.Encoder 52 joins with analog-digital converter 51, is encoded into the digital signal that meets the Bluetooth transmission reference format in order to the voice signal (I2S) with digital form.Bluetooth transmission device 53 joins with encoder 52, in order to transmit the digital signal after encoding.
Sound wireless receiving amplifying device 60 includes a Bluetooth Receiver 61, a decoder 62, a digital analog converter 63 and a simulated power amplifier 64, is preferably a simulation Class.D power-like amplifier.(the general traditional analog Class.A/AB power-like amplifier usefulness of simulation Class.D power-like amplifier is good).Wherein Bluetooth Receiver 61 is in order to receive a digital signal that meets the Bluetooth transmission reference format.Decoder 62 joins with Bluetooth Receiver 61, and in order to this digital signal is deciphered, the voice signal after the decoding meets the I2S form.Digital analog converter 63 joins with decoder 62, is converted to analog form in order to the voice signal after will deciphering.Simulated power amplifier 64 joins with digital analog converter 63, in order to amplify the voice signal of this analog form.
Please refer to Fig. 3, another embodiment for disclosed sound wireless receiving amplifying device 60, also can include a Bluetooth Receiver 61, a decoder 62, a digital audio pulse-width regulating device 65 and a digital power amplifier 66, be preferably a digital Class.D power-like amplifier (the general traditional analog Class.A/AB power-like amplifier usefulness of digital Class.D power-like amplifier is good).Wherein Bluetooth Receiver 61 is in order to receive a digital signal that meets the Bluetooth transmission reference format.Decoder 62 joins with Bluetooth Receiver 61, and in order to this digital signal is deciphered, the voice signal after the decoding meets the I2S form.Digital audio pulse-width regulating device 65 joins with decoder 62, is converted to the pulse wave form in order to the voice signal after will deciphering.Numeric class power amplifier 66 joins with digital audio pulse-width regulating device 65, in order to amplify the voice signal of this pulse wave form.
In addition, the multimedia playing apparatus that disclosed sound radio transmission device 50 and sound wireless receiving amplifying device 60 more can directly apply to other, as: game machine, advanced audio, multimedia computer, multimedia handset, phone or the like.As shown in Figure 2, sound radio transmission device 50 is to be independent of outside the enlarger 70, and acceptance is general analog music signals, so not only can be used in family's theater postposition around, can also be external in general music and dial the machine of putting, as: walkman, computer, broadcast receiver or the like, and pass through wireless blue tooth, transmit music to sound wireless receiving amplifying device 60, dial from loudspeaker and release.
Because the realization of wireless speakers at present, because all be on the fixing frequency band, this frequency band one has interference, and sound just flaw occurs, and the flaw on the sound is not accepted by the consumer at once.
According to principle of the present invention, in sound radio transmission device 50 and sound wireless receiving amplifying device 60, adopt the technology of wireless blue tooth ieee standard 802.15.1, this technology is mainly applied to the transmission of sound and data on mobile phone and the computer at present.Its working frequency range is between 2.400GHz～2.4835GHz, is distinguished into 79 channels altogether.Receiving system and conveyer must be carried out earlier pairing, and transmission end and receiving terminal can the whiles and frequency hopping (Frequency Hopping) at any time, avoid interference band, so its anti-interference is good than other wireless transmission method.
In sound radio transmission device 50 and sound wireless receiving amplifying device 60, Bluetooth transmission standard system adopts audio transmission model agreement (Advanced Audio Distribution Profile, and be different from HFP (the Hands Free Profile) agreement that is extensively applied at present on the mobile phone A2DP).And the present invention adopts wherein SBC (Sub Band Codec) compress technique of wireless blue tooth, and sampling frequency is 44.1kHz, thoroughly realizes the wireless transmission of high-quality music, and possesses high wireless transmission quality.
According to principle of the present invention, disclosed sound radio transmission device 50 optionally connects any multimedia playing apparatus.Disclosed sound wireless receiving amplifying device 60 also can use separately, amplifies any wireless signal that meets the Bluetooth transmission standard in order to receive.
According to principle of the present invention, employed is wireless blue tooth A2DP agreement.In the A2DP agreement, except the SBC form, also can support the form of MPEG1/2/3 sound to transmit, especially the music format of MP3 is extensively applied in the online music.There are many MP3 to dial at present and put device, PDA, mobile phone partly also can support dialling of MP3 format to put, if these groups are put and have bluetooth module in the machine, and support the A2DP agreement, then the MP3 music can be sent to disclosed sound radio receiver and broadcast by wireless blue tooth.Please refer to Fig. 4, sound wireless receiving amplifying device 60 is except Bluetooth Receiver 61 and decoder 62, also have a MP3 decoder 67 and be connected, be decoded into the voice signal (I2S) that meets MP3 music digit form by UART (Universal Asynchronous Receiver/Transmitter) or USB (Universal Serial Bus) interface in order to this is met the Bluetooth transmission standard digital signals with decoder 62.Digital audio pulse-width regulating device 65 joins with MP3 decoder 67, is converted to the pulse wave form in order to the voice signal (I2S) after will deciphering.Digital power amplifier 66 joins with digital audio pulse-width regulating device 65, in order to amplify the voice signal of this pulse wave form
According to principle of the present invention, please refer to Fig. 5, sound wireless receiving amplifying device 60 also has an audio signal processor 68, one analog-digital converters 51 and a microcontroller 69 except Bluetooth Receiver 61 and decoder 62.Digital audio signal processor 68 is connected with decoder 62 and analog-digital converter 51, adjusts digitized processing in order to the audio signal (I2S) of this standard digital form is done volume.Microcontroller 69 is connected with digital audio signal processor 68, utilizes I2C (Inter-IC) control signal, and the input of control source of sound is selected and the control figure Audio Signal Processing.Digital audio signal processor 68 joins with digital audio pulse-width regulating device 65, is converted to the pulse wave form in order to the voice signal after will handling.Digital power amplifier 66 joins with digital audio pulse-width regulating device 65, in order to amplify the voice signal of this pulse wave form.Thus, wireless voice reception amplifying device 60 also can use as independent two sound channel enlargers.
According to principle of the present invention, in above embodiment, its square Bluetooth Receiver 61/ bluetooth conveyer 53 can be selected the GDM1002 chip of GCT company for use, decoder 62/ encoder 52 can be selected the GDM1202 of GCT company for use, MP3 decoder 67 can be selected the PNX0101 chip of Philips company for use, digital audio pulse-width regulating device 65 can be selected the TAS5010 chip of Texas Instrument for use, digital power amplifier 66 can be selected the TAS5112 chip of Texas Instrument for use, digital analog converter 63 can be selected the PCM1802 chip of Texas Instrument for use, and microcontroller 69 can be selected the M68HC908 chip of Motorola for use, simulated power amplifier 64 can be selected the TA2021B chip of Tripath company for use, digital audio signal processor 68 can be selected the TAS3001 chip of Texas Instrument for use, and analog-digital converter 51 can be selected the chip of the PCM1754 of Texas Instrument for use.
The wireless postposition of family's theater in the market mostly is active loudspeaker greatly around loudspeaker, back level power amplification chip must be implanted in the horn box, and external power supply just can use separately, is restricted in the use, and system is expensive.By disclosed sound radio transmission device and sound wireless receiving amplifying device, both optionally separately or together use, and applicable to present theater subsystem, needn't do extra change and design.
The above is preferred embodiment of the present invention only, is not to be used for limiting practical range of the present invention; Every according to equivalence variation and modification that the present invention did, all contained by claim of the present invention.
Claims (28)
1, a kind of sound radio transmission device optionally is connected with a multimedia playing apparatus, and this multimedia playing apparatus is exported a voice signal at least, and this voice signal is an analog form, it is characterized in that, this conveyer includes:
One analog-digital converter is converted to the voice signal of digital form in order to the voice signal with this analog form;
One encoder is connected with this analog-digital converter, in order to the voice signal of this digital form to meet the Bluetooth transmission standard code; And
One Bluetooth transmission device is connected with this encoder, in order to transmit this coded sound signal.
2, sound radio transmission device according to claim 1 is characterized in that, the voice signal of this digital form meets the I2S standard.
3, sound radio transmission device according to claim 1 is characterized in that, this Bluetooth transmission standard is audio transmission model agreement A2DP.
4, a kind of sound wireless receiving amplifying device is characterized in that, includes:
One Bluetooth Receiver is in order to receive a voice signal that meets a digital form of Bluetooth transmission standard;
One decoder is connected with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard;
One digital analog converter is connected with this decoder, is converted to analog form in order to this voice signal after will deciphering; And
One simulated power amplifier is connected with this digital analog converter, in order to amplify the voice signal of this analog form.
5, sound radio transmission device according to claim 4 is characterized in that, the voice signal of this digital form meets the I2S standard.
6, sound radio transmission device according to claim 4 is characterized in that, this Bluetooth transmission standard is audio transmission model agreement A2DP.
7, sound radio transmission device according to claim 4 is characterized in that, this simulated power amplifier is simulation Class.D power amplifier.
8, a kind of sound wireless receiving amplifying device is characterized in that, includes:
One Bluetooth Receiver is in order to receive a voice signal that meets a digital form of Bluetooth transmission standard;
One decoder is connected with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard;
One digital audio pulse-width regulating device is connected with this decoder, is converted to the pulse wave form in order to this voice signal after will deciphering; And
One digital power amplifier is connected with this digital analog converter, in order to amplify the voice signal of this pulse wave form.
9, sound radio transmission device according to claim 8 is characterized in that, the voice signal of this digital form meets the I2S standard.
10, sound radio transmission device according to claim 8 is characterized in that, this Bluetooth transmission standard is audio transmission model agreement A2DP.
11, sound radio transmission device according to claim 8 is characterized in that, this power amplifier is digital Class.D power-like amplifier.
12, sound radio transmission device according to claim 8, it is characterized in that, also include a MP3 decoder, be connected with this decoder and this digital audio pulse-width regulating device respectively, be decoded into the voice signal that meets the MP3 number format in order to this voice signal that this is met the Bluetooth transmission standard.
13, a kind of sound wireless receiving amplifying device is characterized in that, includes:
One Bluetooth Receiver is in order to receive a voice signal that meets a digital form of Bluetooth transmission standard;
One decoder is connected with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard;
One analog-digital converter is in order to receive an analoging sound signal and this analoging sound signal is converted to a digital audio signal;
One digital audio signal processor joins with this decoder and this analog-digital converter respectively, in order to the voice signal of this digital form is done the digitized processing that volume is adjusted;
One microcontroller is connected with this digital audio signal processor, utilizes I2C (Inter-IC) control signal to select and the digital audio signal processing with the input of control source of sound;
One digital audio pulse-width regulating device joins with this digital audio signal processor, in order to adjusted this voice signal is converted to the pulse wave form; And
One digital power amplifier joins with this digital audio pulse-width regulating device, in order to amplify the voice signal of this pulse wave form.
14, sound wireless receiving amplifying device according to claim 13 is characterized in that the voice signal of this digital form meets the I2S standard.
15, sound wireless receiving amplifying device according to claim 13 is characterized in that, this Bluetooth transmission standard is audio transmission model agreement A2DP.
16, sound wireless receiving amplifying device according to claim 13 is characterized in that, this power amplifier is digital Class.D power-like amplifier.
17, wireless transmission of a kind of sound and reception amplification system optionally are connected with a multimedia playing apparatus, and this multimedia playing apparatus is exported a voice signal at least, and this voice signal is an analog form, it is characterized in that, includes:
One sound radio transmission device transmits after sound signal encoding with this analog form becomes to meet the Bluetooth wireless transmission standard in order to transmit; And
One sound wireless receiving amplifying device is in order to receive the voice signal that this meets the Bluetooth wireless transmission standard.
18, wireless transmission of sound according to claim 17 and reception amplification system is characterized in that this Bluetooth transmission standard is audio transmission model agreement A2DP.
19, wireless transmission of sound according to claim 17 and reception amplification system is characterized in that the voice signal of this digital form meets the I2S standard.
20, wireless transmission of sound according to claim 17 and reception amplification system is characterized in that this wireless voice conveyer includes:
One analog-digital converter is converted to the voice signal of digital form in order to the voice signal with this analog form;
One encoder is connected with this analog-digital converter, in order to the voice signal of this digital form to meet the Bluetooth transmission standard code; And
One Bluetooth transmission device is connected with this encoder, in order to transmit this coded sound signal.
21, wireless transmission of sound according to claim 17 and reception amplification system is characterized in that this wireless voice receives amplifying device and includes:
One Bluetooth Receiver is in order to receive a voice signal that meets a digital form of Bluetooth transmission standard;
One decoder is connected with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard;
One digital analog converter is connected with this decoder, is converted to analog form in order to this voice signal after will deciphering; And
One simulated power amplifier is connected with this digital analog converter, in order to amplify the voice signal of this analog form.
22, wireless transmission of sound according to claim 21 and reception amplification system is characterized in that, this simulated power amplifier is simulation Class.D power-like amplifier.
23, wireless transmission of sound according to claim 17 and reception amplification system is characterized in that this wireless voice receives amplifying device and includes:
One Bluetooth Receiver is in order to receive a voice signal that meets a digital form of Bluetooth transmission standard;
One decoder is connected with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard;
One digital audio pulse-width regulating device is connected with this decoder, is converted to the pulse wave form in order to this voice signal after will deciphering; And
One digital power amplifier is connected with this digital analog converter, in order to amplify the voice signal of this pulse wave form.
24, wireless transmission of sound according to claim 23 and reception amplification system is characterized in that this digital power amplifier is digital Class.D power-like amplifier.
25, wireless transmission of sound according to claim 17 and reception amplification system is characterized in that this wireless voice receives amplifying device and includes:
One Bluetooth Receiver is in order to receive a voice signal that meets a digital form of Bluetooth transmission standard;
One decoder joins with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard;
One MP3 decoder is connected with this decoder and this digital audio pulse-width regulating device respectively, is decoded into the voice signal that meets the MP3 number format in order to this voice signal that this is met the Bluetooth transmission standard;
One digital audio pulse-width regulating device joins with this MP3 decoder, is converted to the pulse wave form in order to this voice signal after will deciphering; And
One digital power amplifier joins with this digital analog converter, in order to amplify the voice signal of this pulse wave form.
26, wireless transmission of sound according to claim 25 and reception amplification system is characterized in that this digital power amplifier is digital Class.D power-like amplifier.
27, wireless transmission of sound according to claim 17 and reception amplification system is characterized in that this wireless voice receives amplifying device and includes:
One Bluetooth Receiver is in order to receive a voice signal that meets a digital form of Bluetooth transmission standard;
One decoder joins with this Bluetooth Receiver, in order to the voice signal decoding of this digital form of this being met the Bluetooth transmission standard;
One analog-digital converter is in order to receive an analoging sound signal and this analoging sound signal is converted to a digital audio signal;
One digital audio signal processor joins with this decoder and this analog-digital converter respectively, in order to the voice signal of this standard digital form is done the digitized processing that volume is adjusted;
One microcontroller is connected with this digital audio signal processor, utilizes I2C (Inter-IC) control signal to select and the digital audio signal processing with the input of control source of sound;
One digital audio pulse-width regulating device joins with this digital audio signal processor, in order to adjusted this voice signal is converted to the pulse wave form; And
One digital power amplifier joins with this digital analog converter, in order to amplify the voice signal of this pulse wave form.
28, wireless transmission of sound according to claim 27 and reception amplification system is characterized in that this digital power amplifier is digital Class.D power-like amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410069206 CN1722630A (en) | 2004-07-14 | 2004-07-14 | System for wireless transmission, receiving, and amplification of voice |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200410069206 CN1722630A (en) | 2004-07-14 | 2004-07-14 | System for wireless transmission, receiving, and amplification of voice |
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| CN1722630A true CN1722630A (en) | 2006-01-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200410069206 Pending CN1722630A (en) | 2004-07-14 | 2004-07-14 | System for wireless transmission, receiving, and amplification of voice |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155439A (en) * | 2006-09-30 | 2008-04-02 | 安富科技股份有限公司 | Method for intensifying sound effect processing function of Bluetooth stereo device |
| CN101222793B (en) * | 2008-01-25 | 2010-06-16 | 中兴通讯股份有限公司 | Method and system for regulating bluetooth stereo acoustic quality |
| CN101056477B (en) * | 2007-04-12 | 2011-09-21 | 曾勇 | Radio attached audio energy converter |
| CN101833678B (en) * | 2009-03-13 | 2012-05-30 | 纬创资通股份有限公司 | Data card for computer system and related computer system |
| CN111263273A (en) * | 2018-11-30 | 2020-06-09 | 许祐豪 | Multi-channel audio control system |
-
2004
- 2004-07-14 CN CN 200410069206 patent/CN1722630A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101155439A (en) * | 2006-09-30 | 2008-04-02 | 安富科技股份有限公司 | Method for intensifying sound effect processing function of Bluetooth stereo device |
| CN101056477B (en) * | 2007-04-12 | 2011-09-21 | 曾勇 | Radio attached audio energy converter |
| CN101222793B (en) * | 2008-01-25 | 2010-06-16 | 中兴通讯股份有限公司 | Method and system for regulating bluetooth stereo acoustic quality |
| CN101833678B (en) * | 2009-03-13 | 2012-05-30 | 纬创资通股份有限公司 | Data card for computer system and related computer system |
| CN111263273A (en) * | 2018-11-30 | 2020-06-09 | 许祐豪 | Multi-channel audio control system |
| CN111263273B (en) * | 2018-11-30 | 2021-08-20 | 许祐豪 | Multi-channel audio control system |
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