Audio frequency camouflage and recovery method that combines secret key with random unit orthogonal basis
The invention discloses an audio frequency camouflage and recovery method that combines a secret key with random unit orthogonal basis; the method comprises the following steps: firstly dividing a secret audio frequency and a public audio frequency into small segment sequences of the same quantity,...
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| creator | REN PING'AN SHAO JINGJIN SHAO LIPING |
| description | The invention discloses an audio frequency camouflage and recovery method that combines a secret key with random unit orthogonal basis; the method comprises the following steps: firstly dividing a secret audio frequency and a public audio frequency into small segment sequences of the same quantity, and using the secret key to build the random unit orthogonal basis; secondarily, solving the projection of the secret audio frequency small segment sequence on the random unit orthogonal basis so as to fully, effectively and linearly express the secret audio frequency small segment sequence, selecting first k projection factors with large amplitude and energy and recording index positions, and thus forming an index sequence; finely adjusting the public audio frequency and using a high capacity built-in secret writing method to embed the selected projection factors and a line sequence into the corresponding public audio frequency small segment sequence, thus forming a channel public transmission audio frequency; usi |
| format | Patent |
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the method comprises the following steps: firstly dividing a secret audio frequency and a public audio frequency into small segment sequences of the same quantity, and using the secret key to build the random unit orthogonal basis; secondarily, solving the projection of the secret audio frequency small segment sequence on the random unit orthogonal basis so as to fully, effectively and linearly express the secret audio frequency small segment sequence, selecting first k projection factors with large amplitude and energy and recording index positions, and thus forming an index sequence; finely adjusting the public audio frequency and using a high capacity built-in secret writing method to embed the selected projection factors and a line sequence into the corresponding public audio frequency small segment sequence, thus forming a channel public transmission audio frequency; usi</description><language>chi ; eng</language><subject>ACOUSTICS ; CALCULATING ; COMPUTING ; COUNTING ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL ; MUSICAL INSTRUMENTS ; PHYSICS ; SPEECH ANALYSIS OR SYNTHESIS ; SPEECH OR AUDIO CODING OR DECODING ; SPEECH OR VOICE PROCESSING ; SPEECH RECOGNITION ; TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><creationdate>2018</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181123&DB=EPODOC&CC=CN&NR=108877818A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25543,76293</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20181123&DB=EPODOC&CC=CN&NR=108877818A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>REN PING'AN</creatorcontrib><creatorcontrib>SHAO JINGJIN</creatorcontrib><creatorcontrib>SHAO LIPING</creatorcontrib><title>Audio frequency camouflage and recovery method that combines secret key with random unit orthogonal basis</title><description>The invention discloses an audio frequency camouflage and recovery method that combines a secret key with random unit orthogonal basis; the method comprises the following steps: firstly dividing a secret audio frequency and a public audio frequency into small segment sequences of the same quantity, and using the secret key to build the random unit orthogonal basis; secondarily, solving the projection of the secret audio frequency small segment sequence on the random unit orthogonal basis so as to fully, effectively and linearly express the secret audio frequency small segment sequence, selecting first k projection factors with large amplitude and energy and recording index positions, and thus forming an index sequence; finely adjusting the public audio frequency and using a high capacity built-in secret writing method to embed the selected projection factors and a line sequence into the corresponding public audio frequency small segment sequence, thus forming a channel public transmission audio frequency; usi</description><subject>ACOUSTICS</subject><subject>CALCULATING</subject><subject>COMPUTING</subject><subject>COUNTING</subject><subject>ELECTRIC COMMUNICATION TECHNIQUE</subject><subject>ELECTRICITY</subject><subject>IMAGE DATA PROCESSING OR GENERATION, IN GENERAL</subject><subject>MUSICAL INSTRUMENTS</subject><subject>PHYSICS</subject><subject>SPEECH ANALYSIS OR SYNTHESIS</subject><subject>SPEECH OR AUDIO CODING OR DECODING</subject><subject>SPEECH OR VOICE PROCESSING</subject><subject>SPEECH RECOGNITION</subject><subject>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2018</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNyzsOgkAURmEaC6Pu4boAE4kF0xKisbKyJ5fhByYwc3EeGnYvhQuwOs35tpkpU2uEOo9XgtMLabaSuol7ELuWPLS84ReyiIO0FAeOpMU2xiFQgPaINGKhj4kD-ZWIpeRMJPEr6MXxRA0HE_bZpuMp4PDrLjvers_qfsIsNcLMGg6xrh75WamiULkqL_88X4oGQUc</recordid><startdate>20181123</startdate><enddate>20181123</enddate><creator>REN PING'AN</creator><creator>SHAO JINGJIN</creator><creator>SHAO LIPING</creator><scope>EVB</scope></search><sort><creationdate>20181123</creationdate><title>Audio frequency camouflage and recovery method that combines secret key with random unit orthogonal basis</title><author>REN PING'AN ; SHAO JINGJIN ; SHAO LIPING</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN108877818A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2018</creationdate><topic>ACOUSTICS</topic><topic>CALCULATING</topic><topic>COMPUTING</topic><topic>COUNTING</topic><topic>ELECTRIC COMMUNICATION TECHNIQUE</topic><topic>ELECTRICITY</topic><topic>IMAGE DATA PROCESSING OR GENERATION, IN GENERAL</topic><topic>MUSICAL INSTRUMENTS</topic><topic>PHYSICS</topic><topic>SPEECH ANALYSIS OR SYNTHESIS</topic><topic>SPEECH OR AUDIO CODING OR DECODING</topic><topic>SPEECH OR VOICE PROCESSING</topic><topic>SPEECH RECOGNITION</topic><topic>TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION</topic><toplevel>online_resources</toplevel><creatorcontrib>REN PING'AN</creatorcontrib><creatorcontrib>SHAO JINGJIN</creatorcontrib><creatorcontrib>SHAO LIPING</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>REN PING'AN</au><au>SHAO JINGJIN</au><au>SHAO LIPING</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Audio frequency camouflage and recovery method that combines secret key with random unit orthogonal basis</title><date>2018-11-23</date><risdate>2018</risdate><abstract>The invention discloses an audio frequency camouflage and recovery method that combines a secret key with random unit orthogonal basis; the method comprises the following steps: firstly dividing a secret audio frequency and a public audio frequency into small segment sequences of the same quantity, and using the secret key to build the random unit orthogonal basis; secondarily, solving the projection of the secret audio frequency small segment sequence on the random unit orthogonal basis so as to fully, effectively and linearly express the secret audio frequency small segment sequence, selecting first k projection factors with large amplitude and energy and recording index positions, and thus forming an index sequence; finely adjusting the public audio frequency and using a high capacity built-in secret writing method to embed the selected projection factors and a line sequence into the corresponding public audio frequency small segment sequence, thus forming a channel public transmission audio frequency; usi</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ACOUSTICS CALCULATING COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY IMAGE DATA PROCESSING OR GENERATION, IN GENERAL MUSICAL INSTRUMENTS PHYSICS SPEECH ANALYSIS OR SYNTHESIS SPEECH OR AUDIO CODING OR DECODING SPEECH OR VOICE PROCESSING SPEECH RECOGNITION TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION |
| title | Audio frequency camouflage and recovery method that combines secret key with random unit orthogonal basis |
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