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    METHOD AND APPARATUS FOR SYNTHESIZING SPEECH FROM SPEECH RECOGNITION TEMPLATES
    21.
    发明专利
    METHOD AND APPARATUS FOR SYNTHESIZING SPEECH FROM SPEECH RECOGNITION TEMPLATES 未知

    公开(公告)号：CA1321425C

    公开(公告)日：1993-08-17

    申请号：CA526266

    申请日：1986-12-24

    Applicant: MOTOROLA INC

    Inventor： BORTH DAVID E ,  GERSON IRA A ,  LINDSLEY BRETT L

    IPC: G10L13/00 ,  G10L13/04 ,  G10L15/22 ,  H04M1/27 ,  H04M1/60 ,  G10L5/00

    Abstract: CM00282G A user-interactive control system for an electronic device is disclosed which synthesizes speech from speech recogniton templates to generate voice reply feedback to the user indicative of which template word was recognized. The acoustic features of the user-spoken speech are extracted by the acoustic processor (110) and applied to the training processor (170) to generate word recogniton templates stored in the template memory (160). Recognition processor (120) compares the user-spoken features to the recognition templates to provide voice command data for the device controller (130) which controls the operating parameters of the electronic device (150). The device controller also produces device status data for the synthesis processor (140) which synthesizes a speech reply signal from the word recognition templates. In the preferred embodiment, a hands-free user-interactive control system for a mobile radiotelephone is provided utilizing speech synthesis from speech recognition templates.

    HANDS-FREE CONTROL SYSTEM FOR A RADIOTELEPHONE
    24.
    发明专利
    HANDS-FREE CONTROL SYSTEM FOR A RADIOTELEPHONE 未知

    公开(公告)号：CA1264356A

    公开(公告)日：1990-01-09

    申请号：CA533558

    申请日：1987-04-01

    Applicant: MOTOROLA INC

    Inventor： BORTH DAVID E ,  GERSON IRA A ,  VILMUR RICHARD J

    IPC: H04B1/40

    Abstract: of the Invention An improved hands-free user-interactive control and dialing system is disclosed for use with a speech communications device. The control system (400) includes a dynamic noise suppressor (410), a speech recognizer (420) for implementing voice-control, a device controller (430) responsive to the speech recognizer for controlling operating parameters of the speech communications device (450) and for producing status information representing the operating status of the device, and a speech synthesizer (440) for providing reply information to the user as to the speech communications device operating status. In a mobile radiotelephone application, the spectral subtraction noise suppressor (414) is configured to improve the performance of the speech recognizer (424), the voice quality of the transmitted audio (417), and the audio switching operation of the vehicular speakerphone (460). The combination of noise processing, speech recognition, and speech synthesis provides a substantial improvement to prior art control systems.

    26.
    发明专利
    未知

    公开(公告)号：AT208082T

    公开(公告)日：2001-11-15

    申请号：AT92917101

    申请日：1992-08-03

    Applicant: MOTOROLA INC

    Inventor： GERSON IRA A ,  WINTER ERIC H ,  JASIUK MARK A

    IPC: G10L19/04 ,  G10L19/00 ,  G10L19/06 ,  G10L19/12 ,  G10L19/14 ,  H03M13/35

    Abstract: A method for protecting information bits wherein input data bits, at least some of which are to be protected, are sorted based upon information determined from a subset of the input data bits. An error control coding technique is applied to at least some of the sorted bits. In the preferred embodiment, an input data stream of voice coder bits is separated into arrays of bits. A first array (302) comprises voice coder bits needing error protection, with the bits arranged in order of importance determined by voicing mode. The second array (303) comprises bits that will not be error protected. The bits from the first array are provided to the input of an encoder (304), then the encoded bits are combined (305) with the bits from the second array (303) to form a bit stream.

    Vector sum excited linear predictive coding speech coder
    27.
    发明专利
    Vector sum excited linear predictive coding speech coder 未知

    公开(公告)号：DE4447647C2

    公开(公告)日：2000-05-11

    申请号：DE4447647

    申请日：1994-03-07

    Applicant: MOTOROLA INC

    Inventor： GERSON IRA A ,  JASIUK MARK A ,  HARTMAN MATTHEW A

    IPC: G10L19/06 ,  G10L19/083 ,  G10L19/135 ,  G10L25/06 ,  G10L25/24 ,  G10L19/04

    Abstract: The method comprises the steps of segmenting the optimal reflection coefficient vector into two segments, and providing an array of predetermined vectors of coefficients, with each vector having multiple elements. A first vector is selected from the array. The residual error is calculated corresp. to the first selected vector. The above steps are repeated for each vector in the array. A vector is chosen from the first array with the lowest residual error, which defines the initial conditions for the second segment. A second array of predetermined vectors of reflection coefficients are provided, each vector having multiple elements. The above steps are repeated for the second segment, using the second array of vectors so forming a second chosen vector.

    METHOD FOR GENERATING A SPECTRAL NOISE WEIGHTING FILTER FOR USE IN A SPEECH CODER
    28.
    发明专利
    METHOD FOR GENERATING A SPECTRAL NOISE WEIGHTING FILTER FOR USE IN A SPEECH CODER 未知

    公开(公告)号：CA2132006C

    公开(公告)日：1998-04-28

    申请号：CA2132006

    申请日：1994-01-18

    Applicant: MOTOROLA INC

    Inventor： JASIUK MARK A ,  GERSON IRA A ,  HARTMAN MATTHEW A

    IPC: G10L19/12 ,  H03H17/00 ,  H03H17/02 ,  H03M7/30 ,  H03M7/38 ,  H04B14/04 ,  G10L5/00

    Abstract: Analysis by synthesis calculates a difference by subtracting (130) synthesized s peech from input speech. The synthesized speech is formed by exciting long and short term filters (124,126) with excitation vectors from a codebook store (114) which is searched by codebook generation (120). A weighting filter (132) is applied to the difference signal a nd the weighted difference is used to calculate an energy measure (134) which is used to control the codebook search (140). The weighting filter is an Rth-order filter controlled with calculated coefficients. The method for calculating coefficients models the frequency respo nse of L Pth-order filters by a single Rth-order filter, where the order R ~ LxP. This method increases the control of a speech coder filter wi thout an increase in hardware complexity.

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