公开(公告)号：US07143028B2

公开(公告)日：2006-11-28

申请号：US10205328

申请日：2002-07-24

申请人： W. Daniel Hillis ,  Bran Ferren ,  Russel Howe ,  Brian Eno

发明人： W. Daniel Hillis ,  Bran Ferren ,  Russel Howe ,  Brian Eno

IPC分类号： G10L21/00 ,  H04K1/00

CPC分类号： H04K1/02 ,  G10K11/175 ,  G10K15/02 ,  G10L21/00 ,  G10L21/06 ,  H04K1/06 ,  H04K3/825 ,  H04K2203/12

摘要： 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.

摘要翻译： 公开了一种用于产生可用于掩蔽语音流的混淆语音信号的简单有效的方法。 获得表示待屏蔽的语音流的语音信号。 语音信号然后在时间上划分成段，优选地对应于语音流内的音素。 然后将段存储在存储器中，并且随后选择，检索和组合部分或全部段，以组合成表示非智能语音流的混淆语音信号，当与语音信号组合或者与语音流合成时 ，提供掩蔽效果。 虽然目前优选的实施例在开放式办公室中最容易应用，但是也公开了适用于餐馆，教室和电信系统中的实施例。