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Method and system for scrambling and descrambling audio ...
https://www.freepatentsonline.com/5058159.html#:~:text=Audio%20signals%20are%20scrambled%20by%20inverting%20the%20original%3B,the%20band%20are%20shifted%20to%20the%20lower%20end.
(PDF) Audio scrambling technique based on cellular …
https://www.researchgate.net/publication/257627515_Audio_scrambling_technique_based_on_cellular_automata
4 Audio scrambling based on cellular automata. The technique we are proposing can be divided into two processes: first the audio is. scrambled and used as the …
A Review of Analog Audio Scrambling Methods for Residual ...
https://www.iiste.org/Journals/index.php/ISDE/article/viewFile/2250/2414
The audio signal is transformed using an appropriate transformation technique and the transform coefficients are permuted to produce the Transformation based audio scrambling. 3.2 Analog Audio Scrambling Classification-Second level This section sub-classifies the above techniques based on the analog scrambling techniques available in the literature
MICROPROCESSOR-BASED ANALOG VOICE SCRAMBLING …
https://repository.arizona.edu/bitstream/handle/10150/613892/ITC_1979_79-11-2.pdf;sequence=1
The techniques used for analog voice scrambling fall into two basic categories: (1) frequency (i.e., spectrum) manipulation, and (2) voice signal manipulation with time [4]. To these two basic categories can be added secondary techniques such as amplitude modification and masking. Because the latter two techniques alter the overall dynamic
(PDF) A Review of Analog Audio Scrambling Methods for ...
https://www.researchgate.net/publication/279494781_A_Review_of_Analog_Audio_Scrambling_Methods_for_Residual_Intelligibility
th e analog audio scrambling techniques. Innovative Sys tems Design and Enginee ring www.iiste.or g. ISSN 2222-1727 (Paper) IS SN 2222-28 71 (Online) V ol 3, N o 7, 2012 . 24 .
Audio scrambling - Everything2.com
https://everything2.com/title/Audio+scrambling
Scrambling audio usually refers to somehow garbling a sound signal being transmitted over some insecure medium (like a phone line, a walkie-talkie, cassette tape, etc) and ungarbling the sound at the receiving end, so that the intended recepient can understand the message. Typically, audio scrambling refers to mostly analog electronic techniques; purely …
Progressive Audio Scrambling in Compressed Domain
https://www.comp.nus.edu.sg/~mohan/papers/audscram.pdf
Audio scrambling is an efficient approach towards audio copyright protection during data transfer. It can be used for ensuring confidentiality during distribution. Scrambling techniques have been employed in copyright protection of cable TV broadcast, secure image trans-fer from satellites to ground stations, and for military communication.
Progressive Scrambling for MP3 Audio
https://www.comp.nus.edu.sg/~mohan/papers/mp3_scram.pdf
Audio scrambling aims to minimize the residual intelligibility of the original audio and control the access to only authorized users. It is similar to but not a direct application of normal cryptographic techniques. The main advantage is that scrambled audio are still validly formatted which can be played by the corresponding players.
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