CN107979825B - Audio transmission system based on Internet of things - Google Patents
Audio transmission system based on Internet of things Download PDFInfo
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- CN107979825B CN107979825B CN201711207925.3A CN201711207925A CN107979825B CN 107979825 B CN107979825 B CN 107979825B CN 201711207925 A CN201711207925 A CN 201711207925A CN 107979825 B CN107979825 B CN 107979825B
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- 238000012545 processing Methods 0.000 claims description 36
- 238000012216 screening Methods 0.000 claims description 32
- 238000005070 sampling Methods 0.000 claims description 25
- 238000005336 cracking Methods 0.000 claims description 9
- 238000000605 extraction Methods 0.000 claims description 9
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/02—Protecting privacy or anonymity, e.g. protecting personally identifiable information [PII]
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
- G10L21/00—Speech or voice signal processing techniques to produce another audible or non-audible signal, e.g. visual or tactile, in order to modify its quality or its intelligibility
- G10L21/02—Speech enhancement, e.g. noise reduction or echo cancellation
- G10L21/0208—Noise filtering
- G10L21/0216—Noise filtering characterised by the method used for estimating noise
- G10L21/0232—Processing in the frequency domain
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Abstract
The invention discloses an audio transmission system based on the Internet of things, which comprises an audio transmission device and a plurality of audio output terminals connected with the audio transmission device, wherein the audio transmission device comprises an audio backup module, a filtering module, a purity detection module, an audio encryption module, a triggering module, an analog-to-digital conversion module and an audio wireless transmission module. The invention filters the noise in the audio information by the filtering module and combining the purity detection module, if the purity of the audio information is less than the set parameter, the filtering module filters again to remove the noise in the audio information so as to improve the accuracy of the audio information; the audio information to be transmitted is encrypted and decrypted through the audio encryption module so as to ensure the safety and stability in the transmission process of the audio information, and meanwhile, the stability of data remote transmission is further improved through conversion between an analog module and a digital module.
Description
Technical Field
The invention belongs to the technical field of audio transmission, and relates to an audio transmission system based on the Internet of things.
Background
In recent years, with the rapid development of wireless technology, audio transmission technology permeates into people's daily life, at present, in the field of wireless audio transmission, analog signal transmission is generally adopted, so that interference is easily caused in the audio transmission process, especially when a high-power device with poor electromagnetic compatibility is arranged in a system, problems of crosstalk, sound break, sound explosion and the like are often caused, the signal-to-noise ratio of signals is reduced, and the tone quality of traditional wireless audio transmission is severely limited.
In order to improve the anti-interference performance, stability and accuracy of audio information transmission and the security of audio information transmission, an audio transmission system based on the internet of things is designed.
Disclosure of Invention
The invention aims to provide an audio transmission system based on the Internet of things, and solves the problems of poor anti-interference capability, poor stability and low safety of audio information in the existing audio information transmission process.
The purpose of the invention can be realized by the following technical scheme:
an audio transmission system based on the Internet of things comprises an audio transmission device and a plurality of audio output terminals connected with the audio transmission device, wherein the audio transmission device comprises an audio backup module, a filtering module, a purity detection module, an audio encryption module, a triggering module, an analog-to-digital conversion module and an audio wireless transmission module;
the audio backup module is used for receiving the audio information transmitted to the audio transmission device and storing the received audio information;
the filtering module is used for filtering the stored audio information and removing noise information in the audio information;
the purity detection module is used for carrying out audio information purity detection on the audio information sent by the filtering module, if the detected audio information is in a set range, the audio information is sent to the audio encryption module, and if the detected audio information exceeds the set range, the audio information is sent to the filtering module again for filtering;
the audio encryption module is used for carrying out encryption processing operation on the audio information after the purity detection, sending the audio information after the encryption processing to the trigger module, receiving decryption password information sent by the audio wireless transmission module, and sending the obtained decryption password to the audio output terminal through the audio wireless transmission module;
the trigger module is a trigger chip and is used for receiving an encryption processing completion instruction sent by the audio encryption module and sending the trigger instruction to the analog-to-digital conversion module;
the analog-to-digital conversion module is used for converting the analog quantity audio information after the audio encryption into digital quantity audio information and sending the converted digital quantity audio information to the audio wireless transmission module;
the audio wireless transmission module is used for transmitting digital quantity audio information to a plurality of audio output terminals;
and the audio output terminal decrypts the received digital quantity audio information, performs digital-to-analog conversion on the decrypted digital quantity audio information, and plays the audio information.
Furthermore, the filtering module comprises a first sampling frequency screening unit and a second sampling frequency screening unit, wherein the first sampling frequency screening unit is used for primary screening of the audio information, and the second sampling frequency screening unit is used for secondary screening of the sampling frequency of the audio information.
Further, the purity detection module comprises a purity extraction unit, a purity comparison unit and a feedback processing unit;
the purity extraction unit is used for carrying out purity detection on the audio information sent by the first sampling frequency screening unit in the filtering module and sending the detected purity information to the purity comparison unit;
the purity comparison unit is used for comparing the purity of the audio information sent by the purity extraction unit with a set purity parameter of the audio information, if the detected purity is higher than the set purity parameter, the audio information is sent to the audio encryption module, and if the detected purity is lower than the set purity parameter, the audio information processed by the first sampling frequency screening unit is sent to the feedback processing unit;
the feedback processing unit is used for sending the received audio information to the second sampling frequency screening unit so as to improve the screening precision.
Further, the audio encryption module comprises an encryption processing unit and a decryption processing unit;
the encryption processing unit is used for encrypting the received audio information to generate encrypted audio information and sending the encrypted audio information to the analog-to-digital conversion module;
the decryption processing unit is respectively connected with the encryption processing unit and the audio wireless transmission module, automatically generates a decoding password corresponding to the encrypted audio information according to the encrypted information generated by the encryption processing unit, and sends the generated decoding password to the audio wireless transmission module.
Furthermore, the audio output terminal comprises an audio wireless transceiving unit, a digital-to-analog conversion unit and a password cracking unit;
the audio wireless receiving and sending unit is used for receiving the encrypted audio information sent by the audio wireless transmission module, sending the audio information to the digital-to-analog conversion unit and receiving a decryption password sent by the audio wireless transmission module;
the digital-to-analog conversion unit is used for converting the received digital quantity audio information into analog quantity audio information and sending the converted analog quantity audio information to the password cracking unit;
the password cracking unit is used for receiving the audio information sent by the audio wireless receiving and sending module and sending a password obtaining instruction to the audio encryption module through the audio wireless receiving and sending unit and the audio wireless transmission module so as to obtain a decryption password of the encrypted audio information.
The invention has the beneficial effects that:
the invention filters the noise in the audio information by the filtering module and combining the purity detection module, if the purity of the audio information is less than the set parameter, the filtering module filters again to remove the noise in the audio information so as to improve the accuracy of the audio information; the audio information to be transmitted is encrypted and decrypted through the audio encryption module so as to ensure the safety and stability in the transmission process of the audio information, and meanwhile, the stability of data remote transmission is further improved through conversion between an analog module and a digital module.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of the system of the present invention;
fig. 2 is a schematic diagram of an audio transmission system based on the internet of things according to the present invention;
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1 and 2, the invention relates to an audio transmission system based on the internet of things, which comprises an audio transmission device and a plurality of audio output terminals connected with the audio transmission device, wherein the audio transmission device comprises an audio backup module, a filtering module, a purity detection module, an audio encryption module, a triggering module, an analog-to-digital conversion module and an audio wireless transmission module;
the audio backup module is used for receiving the audio information transmitted to the audio transmission device and storing the received audio information;
the filtering module is used for filtering the stored audio information, removing noise in the audio information and improving the accuracy of audio information transmission;
the purity detection module is used for receiving the audio information processed by the filtering module, detecting the purity of the audio information of the received audio information, sending the audio information to the audio encryption module if the detected audio information is within a set range, and sending the audio information to the filtering module again for filtering if the detected audio information exceeds the set range, so as to ensure that the audio information after filtering meets the requirements;
the purity of the audio information is the ratio of the audio information in the set parameter range to the whole audio information.
The audio encryption module is used for carrying out encryption processing operation on the audio information after the purity detection, sending the audio information after the encryption processing to the trigger module, receiving decryption password information sent by the audio wireless transmission module, and sending the obtained decryption password to the audio output terminal through the audio wireless transmission module;
the trigger module is a trigger chip and is used for receiving an encryption processing completion instruction sent by the audio encryption module and sending the trigger instruction to the analog-to-digital conversion module;
the analog-to-digital conversion module is used for converting the analog quantity audio information after the audio encryption into digital quantity audio information and sending the converted digital quantity audio information to the audio wireless transmission module;
the audio wireless transmission module is used for transmitting the digital audio information to a plurality of audio output terminals in a wireless transmission mode;
the audio output terminal is used for receiving the digital quantity audio information, decrypting the received digital quantity audio information, and performing digital-to-analog conversion on the decrypted digital quantity audio information to realize high-quality playing of the audio information.
The filtering module comprises a first sampling frequency screening unit and a second sampling frequency screening unit, the first sampling frequency screening unit is used for carrying out primary screening on the audio information, the second sampling frequency screening unit is used for carrying out secondary screening on the sampling frequency of the audio information, the audio information after the secondary screening is sent to the audio encryption module, the secondary screening is adopted to improve the purity of the sampling frequency of the audio information, and the accuracy of the audio information is improved.
The purity detection module comprises a purity extraction unit, a purity comparison unit and a feedback processing unit, wherein the purity extraction unit is used for carrying out purity detection on the audio information sent by the first sampling frequency screening unit in the filtering module and sending the detected purity information to the purity comparison unit;
the purity comparison unit is used for comparing the purity of the audio information sent by the purity extraction unit with a set purity parameter of the audio information, if the detected purity is higher than the set purity parameter, the audio information is sent to the audio encryption module, and if the detected purity is lower than the set purity parameter, the audio information processed by the first sampling frequency screening unit is sent to the feedback processing unit;
the feedback processing unit is used for sending the received audio information to the second sampling frequency screening unit, and the screening precision is further improved.
The audio encryption module comprises an encryption processing unit and a decryption processing unit, the encryption processing unit is used for encrypting the received audio information to generate encrypted audio information and sending the encrypted audio information to the analog-to-digital conversion module; the decryption processing unit is respectively connected with the encryption processing unit and the audio wireless transmission module, automatically generates a decoding password corresponding to the encrypted audio information according to the encrypted information generated by the encryption processing unit, and sends the generated decoding password to the audio wireless transmission module.
The audio output terminal comprises an audio wireless receiving and transmitting unit, a digital-to-analog conversion unit, a password cracking unit and an audio playing unit, wherein the audio wireless receiving and transmitting unit is used for receiving the encrypted audio information sent by the audio wireless transmission module, sending the audio information to the digital-to-analog conversion unit and receiving a decryption password sent by the audio wireless transmission module; the digital-to-analog conversion unit is used for converting the received digital quantity audio information into analog quantity audio information and sending the converted analog quantity audio information to the password cracking unit; the password cracking unit is used for receiving the audio information sent by the audio wireless receiving and sending module, sending a password obtaining instruction to the audio encryption module through the audio wireless receiving and sending unit and the audio wireless transmission module, further obtaining a decryption password of the encrypted audio information and realizing the decoding of the encrypted audio information; the audio playing unit is used for playing the decoded audio information.
The invention filters the noise in the audio information by the filtering module and combining the purity detection module, if the purity of the audio information is less than the set parameter, the filtering module filters again to remove the noise in the audio information so as to improve the accuracy of the audio information; the audio information to be transmitted is encrypted and decrypted through the audio encryption module so as to ensure the safety and stability in the transmission process of the audio information, and meanwhile, the stability of data remote transmission is further improved through conversion between an analog module and a digital module.
The foregoing is merely exemplary and illustrative of the principles of the present invention and various modifications, additions and substitutions of the specific embodiments described herein may be made by those skilled in the art without departing from the principles of the present invention or exceeding the scope of the claims set forth herein.
Claims (1)
1. The utility model provides an audio transmission system based on thing networking, includes audio transmission device and a plurality of audio output terminal who is connected with audio transmission device, its characterized in that: the audio transmission device comprises an audio backup module, a filtering module, a purity detection module, an audio encryption module, a triggering module, an analog-to-digital conversion module and an audio wireless transmission module;
the audio backup module is used for receiving the audio information transmitted to the audio transmission device and storing the received audio information;
the filtering module is used for filtering the stored audio information and removing noise information in the audio information;
the purity detection module is used for carrying out audio information purity detection on the audio information sent by the filtering module, if the detected audio information is in a set range, the audio information is sent to the audio encryption module, and if the detected audio information exceeds the set range, the audio information is sent to the filtering module again for filtering;
the audio encryption module is used for carrying out encryption processing operation on the audio information after the purity detection, sending the audio information after the encryption processing to the trigger module, receiving decryption password information sent by the audio wireless transmission module, and sending the obtained decryption password to the audio output terminal through the audio wireless transmission module;
the trigger module is a trigger chip and is used for receiving an encryption processing completion instruction sent by the audio encryption module and sending the trigger instruction to the analog-to-digital conversion module;
the analog-to-digital conversion module is used for converting the analog quantity audio information after the audio encryption into digital quantity audio information and sending the converted digital quantity audio information to the audio wireless transmission module;
the audio wireless transmission module is used for transmitting digital quantity audio information to a plurality of audio output terminals;
the audio output terminal decrypts the received digital quantity audio information, performs digital-to-analog conversion on the decrypted digital quantity audio information, and plays the audio information;
the filtering module comprises a first sampling frequency screening unit and a second sampling frequency screening unit, wherein the first sampling frequency screening unit is used for carrying out primary screening on the audio information, and the second sampling frequency screening unit is used for carrying out secondary screening on the sampling frequency of the audio information;
the purity detection module comprises a purity extraction unit, a purity comparison unit and a feedback processing unit;
the purity extraction unit is used for carrying out purity detection on the audio information sent by the first sampling frequency screening unit in the filtering module and sending the detected purity information to the purity comparison unit;
the purity comparison unit is used for comparing the purity of the audio information sent by the purity extraction unit with a set purity parameter of the audio information, if the detected purity is higher than the set purity parameter, the audio information is sent to the audio encryption module, and if the detected purity is lower than the set purity parameter, the audio information processed by the first sampling frequency screening unit is sent to the feedback processing unit;
the feedback processing unit is used for sending the received audio information to the second sampling frequency screening unit so as to improve the screening precision;
the audio encryption module comprises an encryption processing unit and a decryption processing unit;
the encryption processing unit is used for encrypting the received audio information to generate encrypted audio information and sending the encrypted audio information to the analog-to-digital conversion module;
the decryption processing unit is respectively connected with the encryption processing unit and the audio wireless transmission module, automatically generates a decoding password corresponding to the encrypted audio information according to the encrypted information generated by the encryption processing unit, and sends the generated decoding password to the audio wireless transmission module;
the audio output terminal comprises an audio wireless receiving and transmitting unit, a digital-to-analog conversion unit and a password cracking unit;
the audio wireless receiving and sending unit is used for receiving the encrypted audio information sent by the audio wireless transmission module, sending the audio information to the digital-to-analog conversion unit and receiving a decryption password sent by the audio wireless transmission module;
the digital-to-analog conversion unit is used for converting the received digital quantity audio information into analog quantity audio information and sending the converted analog quantity audio information to the password cracking unit;
the password cracking unit is used for receiving the audio information sent by the audio wireless receiving and sending module and sending a password obtaining instruction to the audio encryption module through the audio wireless receiving and sending unit and the audio wireless transmission module so as to obtain a decryption password of the encrypted audio information.
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| CN201711207925.3A CN107979825B (en) | 2017-11-27 | 2017-11-27 | Audio transmission system based on Internet of things |
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| CN201711207925.3A CN107979825B (en) | 2017-11-27 | 2017-11-27 | Audio transmission system based on Internet of things |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629472A (en) * | 2011-02-07 | 2012-08-08 | Jvc建伍株式会社 | Noise rejection apparatus and noise rejection method |
| CN103730131A (en) * | 2012-10-12 | 2014-04-16 | 华为技术有限公司 | Voice quality evaluation method and device |
| CN204615904U (en) * | 2014-12-19 | 2015-09-02 | 上海斐讯数据通信技术有限公司 | A kind of audio signal transmission encryption system and mobile terminal |
| CN106357623A (en) * | 2016-08-30 | 2017-01-25 | 韦嘉志 | Audio transmission system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140086407A1 (en) * | 2012-09-25 | 2014-03-27 | General Instrument Corporation | Conditional Access to Encrypted Media Content |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102629472A (en) * | 2011-02-07 | 2012-08-08 | Jvc建伍株式会社 | Noise rejection apparatus and noise rejection method |
| CN103730131A (en) * | 2012-10-12 | 2014-04-16 | 华为技术有限公司 | Voice quality evaluation method and device |
| CN204615904U (en) * | 2014-12-19 | 2015-09-02 | 上海斐讯数据通信技术有限公司 | A kind of audio signal transmission encryption system and mobile terminal |
| CN106357623A (en) * | 2016-08-30 | 2017-01-25 | 韦嘉志 | Audio transmission system |
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