公开(公告)号：WO1981002215A1

公开(公告)日：1981-08-06

申请号：PCT/US1981000132

申请日：1981-01-30

Applicant: SEGAN M ,  SWARZTRAUBER S

IPC: G10L01/00

CPC classification number: B42D15/022 ,  G09B5/062 ,  G10H1/26 ,  G10H2230/351

Abstract: An audio-visual message device (15) that utilizes microelectronic digital memory (60, 65, 70) and digital logic (80, 85, 90, 95, 100, 105, 110, 115, 120, 125, 130, 135) to produce through an acoustic transducer (170, 175, 180) the audio portion of the message. In one embodiment the microelectronic digital circuitry is affixed to the back leaf (25) of a greeting card (15) and a photosensitive switch (20, 50) turns on the audio message when the card is opened. A variety of messages may be stored in the digital memory and only selected messages chosen for the appropriate greeting at the time of manufacture.

公开(公告)号：WO1980002211A1

公开(公告)日：1980-10-16

申请号：PCT/US1980000309

申请日：1980-03-24

Applicant: WESTERN ELECTRIC CO INC

Inventor： WESTERN ELECTRIC CO INC ,  ATAL B

IPC: G10L01/00

CPC classification number: G10L19/06

Abstract: In a speech processing arrangement for synthesizing more natural sounding speech, a speech signal is partitioned into intervals (105). For each interval, a set of coded prediction parameter signals, pitch period and voicing signals, and a set of signals corresponding to the spectrum of the prediction error signal are produced (130). A replica of the speech signal is generated responsive to the coded pitch period and voicing signals as modified by the coded prediction parameter signals (140). The pitch period and voicing signals are shaped (150) responsive to the prediction error spectral signals (122, 124, 126) to compensate for errors in the predictive parameter signals whereby the speech replica is natural sounding.

公开(公告)号：WO1979000901A1

公开(公告)日：1979-11-15

申请号：PCT/US1979000197

申请日：1979-03-28

Applicant: WESTERN ELECTRIC CO INC

Inventor： WESTERN ELECTRIC CO INC ,  ATAL B ,  SCHROEDER M

IPC: G10L01/00

CPC classification number: H04B14/046 ,  G10L19/04 ,  G10L19/06 ,  H03M3/042

Abstract: A predictive speech signal processor features an adaptive filter (120) in a feedback network (137) around the quantizer (111). The adaptive filter (120) essentially combines the quantizing error signal, the formant related prediction parameter signals and the difference signal to concentrate the quantizing error noise in spectral peaks corresponding to the time-varying formant portions of the speech spectrum so that the quantizing noise is masked by the speech signal formants.