07143028 is referenced by 49 patents and cites 20 patents.

A simple and efficient method for producing an obfuscated speech signal which may be used to mask a stream of speech, is disclosed. A speech signal representing the speech stream to be masked is obtained. The speech signal is then temporally partitioned into segments, preferably corresponding to phonemes within the speech stream. The segments are then stored in a memory, and some or all of the segments are subsequently selected, retrieved, and assembled into an obfuscated speech signal representing an unintelligble speech stream that, when combined with the speech signal or reproduced and combined with the speech stream, provides a masking effect. While the presently preferred embodiment finds application most readily in an open plan office, embodiments suitable for use in restaurants, classrooms, and in telecommunications systems are also disclosed.

Title
Method and system for masking speech
Application Number
10/205328
Publication Number
7143028 (B2)
Application Date
July 24, 2002
Publication Date
November 28, 2006
Inventor
Brian Eno
London
GB
Russel Howe
Montrose
CA, US
Bran Ferren
Beverly Hills
CA, US
W Daniel Hillis
Encino
CA, US
Agent
Glenn Patent Group
Michael A Glenn
Assignee
Applied Minds
CA, US
IPC
H04K 1/00
G10L 21/00
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