CN204810470U - Seeing and hearing encircles sound equipment's harmless wireless audio transmission system of multichannel - Google Patents

Seeing and hearing encircles sound equipment's harmless wireless audio transmission system of multichannel Download PDF

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Publication number
CN204810470U
CN204810470U CN201520492614.6U CN201520492614U CN204810470U CN 204810470 U CN204810470 U CN 204810470U CN 201520492614 U CN201520492614 U CN 201520492614U CN 204810470 U CN204810470 U CN 204810470U
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audio
module
digital signals
wireless
bass
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朱文锋
肖杰行
伏胜
杨泳源
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ZHONGSHAN RICHSOUND ELECTRONIC INDUSTRIAL Co Ltd
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ZHONGSHAN RICHSOUND ELECTRONIC INDUSTRIAL Co Ltd
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Abstract

The utility model discloses a seeing and hearing encircles sound equipment's harmless wireless audio transmission system of multichannel, a preceding left side and preceding right audio frequency data signal in its system, the bass is put audio frequency data signal in with and is encircleed a left side and encircle right audio frequency data signal output back, the separation of the first audio frequency data signal separating module of audio frequency data signal rethread is put in with to wherein bass, the audio frequency mixture is carried out with preceding right audio frequency data signal rethread audio mixing module in wherein a bass audio frequency data signal and a preceding left side, audio frequency data signal after will mixing passes through the unified transmission of wireless transmitter module, then corresponding three wireless receiver of the group modules that set up are received, this three wireless receiver of group module was received behind the corresponding audio frequency data signal, isolate bass audio frequency data signal more respectively, audio frequency data signal is encircleed on a left side and audio frequency data signal is encircleed on the right side. Thereby the harmless wireless audio transmission of three channels has been realized.

Description

The multichannel of audiovisual surround sound equipment can't harm wireless audio transmission system
Technical field
The utility model relates to a kind of harmless wireless audio transmission system of audiovisual surround sound equipment, and particularly a kind of multichannel of audiovisual surround sound equipment can't harm wireless audio transmission system.
Background technology
General audiovisual surround sound equipment has more telepresenc to allow play audio, mostly be provided with preposition left and right sound channels loud speaker, center loudspeaker in the front that audiovisual that corresponds to of audio visual environment, the rear corresponding to viewer is provided with left and right circulating loudspeaker, and subwoofer is set in position, and form be commonly called as six sound channels (become five one sound channels) around audio.
The erection mode of tradition surround sound is the Signal transmissions by each loud speaker of railway superstructures and sound equipment main body, and general main system of audio is located at the anterior position place of viewer more, therefore preposition left and right sound channels loud speaker, circuit between center loudspeaker and main system of audio can't cause obstruction to the moving-wire of audio visual environment; Its circuit between left and right circulating loudspeaker and main system of audio that has being located at viewer rear position then likely can through the moving-wire of audio visual environment only, and obstruction will be caused to the personnel of turnover environment, severe patient more likely pulls because circuit suffers to hook improperly and causes the damage of stereo set.
For above-mentioned, be developed the harmless wireless audio frequency transmission function technology in audiovisual surround sound equipment between main system of audio and loud speaker, such as harmless wireless supper bass keep pouring in defeated or harmless wireless left and right around audio transmission also or harmless wireless mid-audio transmission etc.Harmless wireless audio frequency transmission function is adopted to replace the voice band line in conventional art to transmit, therefore efficiently avoid in conventional art because the circuit between left and right circulating loudspeaker and main system of audio is through audio visual environment, cause causing obstruction to the personnel of turnover environment, severe patient is more likely because circuit suffers to hook improperly pull and cause the situation of the damage of stereo set to occur.But existing harmless wireless audio frequency transmission function technology can only accomplish the audio transmission of 2 passages.Therefore, it cannot all change harmless wireless system into left and right around audio frequency and supper bass frequently.
Therefore, be necessary that the audiovisual surround sound system that above-mentioned existing employing be can't harm to wireless audio frequency transmission function technology does further technological improvement.
Utility model content
The purpose of this utility model provides a kind of multichannel of audiovisual surround sound equipment to can't harm wireless audio transmission system to solve above-mentioned the deficiencies in the prior art.
To achieve these goals, the multichannel of a kind of audiovisual surround sound equipment designed by the utility model can't harm wireless audio transmission system, and this system comprises:
One for being converted to front left and front right audio digital signals, bass and mid-audio digital signals and around the left DD/DTS decoder module with exporting around right audio digital signals by DD/DTSSPDIF input analog video signal;
One by the mode of numerical computations to above-mentioned front left and front right audio digital signals, bass and mid-audio digital signals and around the left digital signal processing module with processing around right audio digital signals;
For the wireless launcher module of harmless wireless transmission audio digital signals;
For receiving the wireless receiver module of the audio digital signals that above-mentioned wireless launcher module occurs;
And for audio digital signals is converted to audio analog signals, and carry out the power amplifier that amplifies to drive loud speaker to sound;
Wherein, above-mentioned digital signal processing module is primarily of conventional audio processing module and mix module two parts composition, the described front left that above-mentioned DD/DTS decoder module produces and front right audio digital signals enter conventional audio processing module and export the first power amplifier to by circuit, described bass and mid-audio digital signals are separated into audio bass digital signal and mid-audio digital signals by a first audio digital signals separation module, wherein said mid-audio digital signals enters conventional audio processing module equally and exports the second power amplifier to, described audio bass digital signal then enters mix module, described around left with enter above-mentioned mix module around right audio digital signals, described mix module exports above-mentioned wireless launcher module to, above-mentioned wireless receiver module is divided into the first wireless receiver module, second wireless receiver module and the 3rd wireless receiver module, described first wireless receiver module, second wireless receiver module and the 3rd wireless receiver module three individual reception by above-mentioned wireless launcher module send through mix module mixed audio bass digital signal and around left with around right audio digital signals, described first wireless receiver module is wherein obtained audio bass digital signal by a second audio digital signals separation module and first low pass filter and is exported to the 3rd power amplifier, described second wireless receiver module obtains left exporting the 4th power amplifier to around audio digital signals by a 3rd audio digital signals separation module and high pass filter, described 3rd wireless receiver module obtains right export power amplifier to export the 5th power amplifier to around audio digital signals by a 4th audio digital signals separation module.
Described DD/DTS decoder a kind ofly DD/DTSSPDIF input analog video signal is converted to front left and front right audio digital signals, bass and mid-audio digital signals and the family expenses two-decoder around the left standard with exporting around right audio digital signals.
Described Digital Signal Processing is the theory and technology that a kind of mode of numerical computations is processed signal, and its English original name, digitalsignalprocessing, is called for short DSP.
The basic handling content of above-mentioned conventional audio processing module to audio digital signals comprises: the conversion between different sample rate, frequency, port number and conversion.Wherein conversion is just regarded as another kind of form simply, and conversion is undertaken by resampling, and interpolation algorithm wherein can also be adopted as required with compensating distortion; For the various conversion that voice data itself carries out, as faded in, fading out, volume adjusting etc.; By the conversion that digital filtering algorithm carries out, as high pass, low pass filter.
The multichannel of above-mentioned middle provided a kind of audiovisual surround sound equipment can't harm wireless audio transmission system, digital signal processing module in its system comprises conventional audio processing module and mix module two parts, D/DTSSPDIF input analog video signal is converted to front left and front right audio digital signals by DD/DTS decoder, bass and mid-audio digital signals and around left with export around right audio digital signals after, bass wherein and mid-audio digital signals are separated by the first audio digital signals separation module again, audio bass digital signal wherein and front left and front right audio digital signals carry out audio mix by mix module again, mixed audio digital signals is launched by wireless launcher module is unified, then correspondence arranges three groups of wireless receiver modules and receives, after these three groups of wireless receiver modules receive corresponding audio digital signals, isolate audio bass digital signal respectively again, left around audio digital signals and the right side around audio digital signals.Thus achieve three-channel harmless wireless audio frequency transmission function, in audio visual environment, left and right surround sound and supper bass are all changed into harmless wireless transmission, user just can according to the size of audio visual environment random put left and right surround sound and subwoofer.
As everyone knows, the dynamic thought of audion system is far smaller than the dynamic range of band music signal, dynamic up to 100dB as symphony orchestra, and the dynamic range of general audion system is lower than 80dB, and digital system can reach more than 90dB, and magnetic tape station is then at below 70dB.Therefore music signal is recorded on tape or when being made into television field frame, with audio compressor, the dynamic range of music signal must be compressed. in order to avoid sound pick-up outfit transships and causes device damage or audio distortions.But so. amplifier good again and audio amplifier, the music of Larger Dynamic of also cannot resetting out.Examination is defeated for television audio signals people to high fidelity amplifier, and reset with audio amplifier, just can feel that television field frame is more unpleasant to hear, solution comes being expanded by the signal compressed with audio extender again.Original dynamic to return to.
Therefore, as further technological improvement, between described first audio digital signals separation module and mix module, have additional bass dynamic audio frequency processing module; Have additional around dynamic audio frequency processing module between described DD/DTS decoder and mix module.
As further technological improvement, between described first audio digital signals separation module and bass dynamic audio frequency processing module, have additional the second bass filter.Bass filter in above-mentioned further Technological improvement plan can AC noise further in filtering audio bass digital signal and noise and induced signal, thus further improves the quality of audio bass.
As further technological improvement, in described wireless launcher module, have additional the signal encryption module that the audio digital signals of band transmitting is encrypted.In above-mentioned further Technological improvement plan signal encryption module be arranged so that audio digital signals can be launched by wireless launcher module after encryption again, audio signal emission security grade can be promoted.
The multichannel of a kind of audiovisual surround sound equipment that the utility model obtains can't harm wireless audio transmission system, after it uses in audiovisual surround sound equipment, the line audio transmission road through audio visual environment can be reduced, thus promote the cleaning of whole audio visual environment, efficiently avoid in conventional art because the circuit between left and right circulating loudspeaker and main system of audio is through audio visual environment, cause causing obstruction to the personnel of turnover environment, severe patient is more likely because circuit suffers to hook improperly pull and cause the situation of the damage of stereo set to occur.
Accompanying drawing explanation
Fig. 1 be embodiment 1 provide a kind of multichannel of audiovisual surround sound equipment to can't harm the schematic diagram of wireless audio transmission system;
Fig. 2 be embodiment 2 provide a kind of multichannel of audiovisual surround sound equipment to can't harm the schematic diagram of wireless audio transmission system;
Fig. 3 be embodiment 3 provide a kind of multichannel of audiovisual surround sound equipment to can't harm the schematic diagram of wireless audio transmission system;
Fig. 4 be embodiment 4 provide a kind of multichannel of audiovisual surround sound equipment to can't harm the schematic diagram of wireless launcher module in wireless audio transmission system.
In figure: DD/DTS decoder module 1, digital signal processing module 2, wireless launcher module 3, conventional audio processing module 4, mix module 5, first power amplifier 6, first audio digital signals separation module 7, second power amplifier 8, first wireless receiver module 9, second wireless receiver module 10, 3rd wireless receiver module 11, second audio digital signals separation module 12, first low pass filter 13, 3rd power amplifier 14, 3rd audio digital signals separation module 15, high pass filter 16, 4th power amplifier 17, 4th audio digital signals separation module 18, 5th power amplifier 19, bass dynamic audio frequency processing module 20, around dynamic audio frequency processing module 21, second bass filter 22, signal encryption module 23.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Embodiment 1:
As shown in Figure 1, the multichannel of a kind of audiovisual surround sound equipment provided in the present embodiment can't harm wireless audio transmission system, and this system comprises:
One for being converted to front left and front right audio digital signals, bass and mid-audio digital signals and around the left DD/DTS decoder module 1 with exporting around right audio digital signals by DD/DTSSPDIF input analog video signal;
One by the mode of numerical computations to above-mentioned front left and front right audio digital signals, bass and mid-audio digital signals and around the left digital signal processing module 2 with processing around right audio digital signals;
For the wireless launcher module 3 of harmless wireless transmission audio digital signals;
For receiving the wireless receiver module of the audio digital signals that above-mentioned wireless launcher module 3 occurs;
And for audio digital signals is converted to audio analog signals, and carry out the power amplifier that amplifies to drive loud speaker to sound;
Wherein, above-mentioned digital signal processing module 2 is primarily of conventional audio processing module 4 and mix module 5 two parts composition, the described front left that above-mentioned DD/DTS decoder module 1 produces and front right audio digital signals enter conventional audio processing module 4 and export the first power amplifier 6 to by circuit, described bass and mid-audio digital signals are separated into audio bass digital signal and mid-audio digital signals by a first audio digital signals separation module 7, wherein said mid-audio digital signals enters conventional audio processing module 4 equally and exports the second power amplifier 8 to, described audio bass digital signal then enters mix module 5, described around left with enter above-mentioned mix module 5 around right audio digital signals, described mix module 5 exports above-mentioned wireless launcher module 3 to, above-mentioned wireless receiver module is divided into the first wireless receiver module 9, second wireless receiver module 10 and the 3rd wireless receiver module 11, described first wireless receiver module 9, second wireless receiver module 10 and the 3rd wireless receiver module 11 three individual reception by above-mentioned wireless launcher module 3 send through mix module 5 mixed audio bass digital signal and around left with around right audio digital signals, described first wireless receiver module 9 is wherein obtained audio bass digital signal by a second audio digital signals separation module 12 and first low pass filter 13 and is exported to the 3rd power amplifier 14, described second wireless receiver module 10 obtains left exporting the 4th power amplifier 17 to around audio digital signals by a 3rd audio digital signals separation module 15 and high pass filter 16, described 3rd wireless receiver module 11 obtains right export power amplifier to export the 5th power amplifier 19 to around audio digital signals by a 4th audio digital signals separation module 18.
The multichannel of above-mentioned middle provided a kind of audiovisual surround sound equipment can't harm wireless audio transmission system, digital signal processing module 2 in its system comprises conventional audio processing module 4 and mix module 5 two parts, D/DTSSPDIF input analog video signal is converted to front left and front right audio digital signals by DD/DTS decoder, bass and mid-audio digital signals and around left with export around right audio digital signals after, bass wherein and mid-audio digital signals are separated by the first audio digital signals separation module 7 again, audio bass digital signal wherein and front left and front right audio digital signals carry out audio mix by mix module 5 again, mixed audio digital signals is launched by wireless launcher module 3 is unified, then correspondence arranges three groups of wireless receiver modules and receives, after these three groups of wireless receiver modules receive corresponding audio digital signals, isolate audio bass digital signal respectively again, left around audio digital signals and the right side around audio digital signals.Thus achieve three-channel harmless wireless audio frequency transmission function, in audio visual environment, left and right surround sound and supper bass are all changed into harmless wireless transmission, user just can according to the size of audio visual environment random put left and right surround sound and subwoofer.
Embodiment 2:
The multichannel of a kind of audiovisual surround sound equipment provided in the present embodiment can't harm wireless audio transmission system, its general structure is consistent with embodiment 1, as shown in Figure 2, but between described first audio digital signals separation module 7 and mix module 5, have additional bass dynamic audio frequency processing module 20 in the present embodiment; Have additional around dynamic audio frequency processing module 21 between described DD/DTS decoder and mix module 5.
Embodiment 3:
The multichannel of a kind of audiovisual surround sound equipment provided in the present embodiment can't harm wireless audio transmission system, its general structure is consistent with embodiment 2, as shown in Figure 3, but between described first audio digital signals separation module 7 and bass dynamic audio frequency processing module 20, have additional the second bass filter 22 in the present embodiment.
Bass filter in above-mentioned can AC noise further in filtering audio bass digital signal and noise and induced signal, thus further improves the quality of audio bass.
Embodiment 4:
The multichannel of a kind of audiovisual surround sound equipment provided in the present embodiment can't harm wireless audio transmission system, its general structure is consistent with embodiment 3, as shown in Figure 4, but have additional the signal encryption module 23 that is encrypted of audio digital signals that band is launched in the module of wireless launcher described in the present embodiment 3.
Above-mentioned signal encryption module 23 be arranged so that audio digital signals can be launched by wireless launcher module 3 after encryption again, audio signal emission security grade can be promoted.

Claims (4)

1. the multichannel of audiovisual surround sound equipment can't harm a wireless audio transmission system, it is characterized in that comprising:
One for being converted to front left and front right audio digital signals, bass and mid-audio digital signals and around the left DD/DTS decoder module with exporting around right audio digital signals by DD/DTSSPDIF input analog video signal;
One by the mode of numerical computations to above-mentioned front left and front right audio digital signals, bass and mid-audio digital signals and around the left digital signal processing module with processing around right audio digital signals;
For the wireless launcher module of harmless wireless transmission audio digital signals;
For receiving the wireless receiver module of the audio digital signals that above-mentioned wireless launcher module occurs;
And for audio digital signals is converted to audio analog signals, and carry out the power amplifier that amplifies to drive loud speaker to sound;
Wherein, above-mentioned digital signal processing module is primarily of conventional audio processing module and mix module two parts composition, the described front left that above-mentioned DD/DTS decoder module produces and front right audio digital signals enter conventional audio processing module and export the first power amplifier to by circuit, described bass and mid-audio digital signals are separated into audio bass digital signal and mid-audio digital signals by a first audio digital signals separation module, wherein said mid-audio digital signals enters conventional audio processing module equally and exports the second power amplifier to, described audio bass digital signal then enters mix module, described around left with enter above-mentioned mix module around right audio digital signals, described mix module exports above-mentioned wireless launcher module to, above-mentioned wireless receiver module is divided into the first wireless receiver module, second wireless receiver module and the 3rd wireless receiver module, described first wireless receiver module, second wireless receiver module and the 3rd wireless receiver module three individual reception by above-mentioned wireless launcher module send through mix module mixed audio bass digital signal and around left with around right audio digital signals, described first wireless receiver module is wherein obtained audio bass digital signal by a second audio digital signals separation module and first low pass filter and is exported to the 3rd power amplifier, described second wireless receiver module obtains left exporting the 4th power amplifier to around audio digital signals by a 3rd audio digital signals separation module and high pass filter, described 3rd wireless receiver module obtains right export power amplifier to export the 5th power amplifier to around audio digital signals by a 4th audio digital signals separation module.
2. the multichannel of a kind of audiovisual surround sound equipment according to claim 1 can't harm wireless audio transmission system, it is characterized in that having additional bass dynamic audio frequency processing module between described first audio digital signals separation module and mix module; Have additional around dynamic audio frequency processing module between described DD/DTS decoder and mix module.
3. the multichannel of a kind of audiovisual surround sound equipment according to claim 2 can't harm wireless audio transmission system, it is characterized in that having additional the second bass filter between described first audio digital signals separation module and bass dynamic audio frequency processing module.
4. the multichannel of a kind of audiovisual surround sound equipment according to any one of claim 1-3 can't harm wireless audio transmission system, it is characterized in that having additional the signal encryption module be encrypted the audio digital signals of band transmitting in described wireless launcher module.
CN201520492614.6U 2015-07-08 2015-07-08 Seeing and hearing encircles sound equipment's harmless wireless audio transmission system of multichannel Active CN204810470U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111601159A (en) * 2020-05-27 2020-08-28 海信视像科技股份有限公司 Display device, digital audio signal generation method and digital audio signal processing method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111601159A (en) * 2020-05-27 2020-08-28 海信视像科技股份有限公司 Display device, digital audio signal generation method and digital audio signal processing method

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