CH238926A - Method of obfuscating spoken messages. - Google Patents

Method of obfuscating spoken messages.

Info

Publication number
CH238926A
CH238926A CH238926DA CH238926A CH 238926 A CH238926 A CH 238926A CH 238926D A CH238926D A CH 238926DA CH 238926 A CH238926 A CH 238926A
Authority
CH
Switzerland
Prior art keywords
obfuscating
spoken messages
spoken
messages
obfuscating spoken
Prior art date
Application number
Other languages
German (de)
Inventor
Guanella Gustav
Original Assignee
Patelhold Patentverwertung
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Patelhold Patentverwertung filed Critical Patelhold Patentverwertung
Publication of CH238926A publication Critical patent/CH238926A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • H04K1/04—Secret communication by frequency scrambling, i.e. by transposing or inverting parts of the frequency band or by inverting the whole band

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Complex Calculations (AREA)
  • Transmission Systems Not Characterized By The Medium Used For Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)
CH238926D 1943-04-05 1943-04-05 Method of obfuscating spoken messages. CH238926A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH582737X 1943-04-05

Publications (1)

Publication Number Publication Date
CH238926A true CH238926A (en) 1945-08-31

Family

ID=4521608

Family Applications (1)

Application Number Title Priority Date Filing Date
CH238926D CH238926A (en) 1943-04-05 1943-04-05 Method of obfuscating spoken messages.

Country Status (6)

Country Link
US (1) US2411206A (en)
BE (1) BE455172A (en)
CH (1) CH238926A (en)
FR (1) FR902917A (en)
GB (1) GB582737A (en)
NL (1) NL63459C (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062750B (en) * 1957-09-27 1959-08-06 Standard Elektrik Lorenz Ag Arrangement for switching over voice inverters in communication systems
DE1181749B (en) * 1960-03-31 1964-11-19 Siemens Ag Method for message encryption
DE1196713B (en) * 1962-08-30 1965-07-15 Deutsche Bundespost Procedure for voice encryption
DE2333975A1 (en) * 1973-06-12 1975-01-09 Patelhold Patentverwertung METHOD AND DEVICE FOR THE SECRET TRANSMISSION OF VOICE SIGNALS
DE2457663A1 (en) * 1974-11-05 1976-05-06 Patelhold Patentverwertung PROCEDURES AND EQUIPMENT FOR IMPROVING CONFIDENTIALITY IN ENCRYPTED MESSAGE TRANSMISSION
DE2750240A1 (en) * 1977-11-10 1979-05-17 Tekade Felten & Guilleaume PROCESS FOR IMPROVING THE QUALITY OF REPLAY OF LANGUAGE DURING ENCRYPTION
DE2523828C2 (en) * 1975-05-30 1982-08-12 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Method for obfuscating speech signals with the aid of orthogonal matrices

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124748A (en) * 1964-03-10 Secret signalling systems
CH246844A (en) * 1945-09-15 1947-01-31 Patelhold Patentverwertung Method and device for obfuscating electrically transmitted voice messages.
BE473802A (en) * 1946-08-20
US2535442A (en) * 1949-07-26 1950-12-26 James L A Mclaughlin Heterodyne eliminator communication system
US2766325A (en) * 1951-09-01 1956-10-09 Itt Narrow band communication system
US4068094A (en) * 1973-02-13 1978-01-10 Gretag Aktiengesellschaft Method and apparatus for the scrambled transmission of spoken information via a telephony channel
CH580893A5 (en) * 1973-07-02 1976-10-15 Gretag Ag
US4058677A (en) * 1974-04-26 1977-11-15 Lear Siegler, Inc. Sound scrambling equipment
US4156107A (en) * 1978-02-03 1979-05-22 Bell Telephone Laboratories, Incorporated Speech signal scrambler
US4443660A (en) * 1980-02-04 1984-04-17 Rockwell International Corporation System and method for encrypting a voice signal
US4591673A (en) * 1982-05-10 1986-05-27 Lee Lin Shan Frequency or time domain speech scrambling technique and system which does not require any frame synchronization
US5949878A (en) * 1996-06-28 1999-09-07 Transcrypt International, Inc. Method and apparatus for providing voice privacy in electronic communication systems

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1062750B (en) * 1957-09-27 1959-08-06 Standard Elektrik Lorenz Ag Arrangement for switching over voice inverters in communication systems
DE1181749B (en) * 1960-03-31 1964-11-19 Siemens Ag Method for message encryption
DE1196713B (en) * 1962-08-30 1965-07-15 Deutsche Bundespost Procedure for voice encryption
DE2333975A1 (en) * 1973-06-12 1975-01-09 Patelhold Patentverwertung METHOD AND DEVICE FOR THE SECRET TRANSMISSION OF VOICE SIGNALS
DE2457663A1 (en) * 1974-11-05 1976-05-06 Patelhold Patentverwertung PROCEDURES AND EQUIPMENT FOR IMPROVING CONFIDENTIALITY IN ENCRYPTED MESSAGE TRANSMISSION
DE2523828C2 (en) * 1975-05-30 1982-08-12 TE KA DE Felten & Guilleaume Fernmeldeanlagen GmbH, 8500 Nürnberg Method for obfuscating speech signals with the aid of orthogonal matrices
DE2750240A1 (en) * 1977-11-10 1979-05-17 Tekade Felten & Guilleaume PROCESS FOR IMPROVING THE QUALITY OF REPLAY OF LANGUAGE DURING ENCRYPTION

Also Published As

Publication number Publication date
US2411206A (en) 1946-11-19
BE455172A (en)
NL63459C (en)
FR902917A (en) 1945-09-17
GB582737A (en) 1946-11-26

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