公开(公告)号：EP1062657A4

公开(公告)日：2004-10-06

申请号：EP99905742

申请日：1999-02-04

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES PATRICK ,  PENG WEIMIN ,  JASIUK MARK A ,  SMITH AARON M

IPC: G10L19/04 ,  G10L20060101 ,  G10L19/06 ,  G10L19/12 ,  H03M7/30 ,  G10L3/00

CPC classification number: G10L19/04 ,  G10L19/06 ,  G10L19/12 ,  H03M7/30

Abstract: A method and system for providing split vector quantization for use in determining constrained ordered set values, such as line spectrum pair parameters to determine spectral parameters in a data compression system, utilizes multiple codebooks (22a-22c) containing delta coded constrained ordered set values that are normalized to an upper and lower bound. An LSP reconstructor (34) reconstructs received spectral parameters to decode data, such as speech, based on the normalized delta quantization data of line spectrum pair parameters obtained from the split vector reconstruction codebooks (22a-22c). The LSP reconstructor (34) dynamically generates line spectrum pair parameters based on the normalized delta quantization data. In another embodiment, instead of storing the absolute value of the line spectrum pair parameters in segmented codebooks, the combination of at least two absolute value vectors and at least one normalized delta quantization vector is used for spectral quantization.

公开(公告)号：EP1010278A4

公开(公告)日：2002-10-28

申请号：EP98921087

申请日：1998-05-08

Applicant: MOTOROLA INC

Inventor： PROCTOR LEE MICHAEL ,  ASHLEY JAMES PATRICK

IPC: H04B14/04 ,  H04J3/16 ,  H04Q11/04 ,  H04W28/20 ,  H04W88/18 ,  H04J3/14 ,  H04J13/00

CPC classification number: H04W28/20 ,  H04B2201/70703 ,  H04J3/1688 ,  H04W88/181

Abstract: A method and system for controlling speech encoding in a communication system utilizes feedback information such as packet modification control data (154) sent from a communication link output controller, such as a network arbitor (142). The network arbitor (142) sends the packet modification control data (154) to a selected vocoder (146) to change the filter states of the selected vocoder (146) when the network arbitor (142) modifies an output speech packet communicated of a communication link (20), to facilitate improved convergence of a speech encoder and a speech decoder, such as a mobile subscriber unit.

公开(公告)号：EP1106022A4

公开(公告)日：2001-10-10

申请号：EP99942127

申请日：1999-08-17

Applicant: MOTOROLA INC

Inventor： BROPHY JOHN DOUGLAS ,  ASHLEY JAMES PATRICK ,  PROCTOR LEE MICHAEL ,  MARTINOVICH KRSMAN

IPC: G10L19/00 ,  H04M1/00 ,  H04W88/18 ,  H04Q7/00 ,  H04Q7/30

CPC classification number: H04W88/181

Abstract: Vocoder (200) bypass is provided using a combination of out-of-band and in-band signaling. In preferred embodiments of the present invention, two signaling channels are arranged for transmission within the compressed speech. Each of the signaling channels is communicated at a preferred rate to permit fast, reliable detection of conditions indicating vocoder bypass mode of operation and to synchronize and communicate compressed speech in a vocoder bypass mode of operation.

公开(公告)号：EP1106021A4

公开(公告)日：2001-09-05

申请号：EP99935888

申请日：1999-07-23

Applicant: MOTOROLA INC

Inventor： BROPHY JOHN DOUGLAS ,  ASHLEY JAMES PATRICK ,  PROCTOR LEE MICHAEL

IPC: H04B7/26 ,  H04M3/00 ,  H04M7/00 ,  H04Q11/04 ,  H04W88/18 ,  H04Q7/00 ,  H04Q7/30

CPC classification number: H04W88/181

Abstract: Vocoder (200) bypass is provided using in-band signaling. In preferred embodiments of the present invention, three signaling channels (see the Figure) are arranged for transmission within the compressed speech. Each of the signaling channels is communicated at a preferred rate to permit fast, reliable detection of conditions indicating vocoder bypass mode of operations, to negotiate suitable vocoder type if necessary, and to synchronize and communicate compressed speech in a vocoder bypass mode of operation.

公开(公告)号：EP0886927A1

公开(公告)日：1998-12-30

申请号：EP97904861

申请日：1997-01-24

Applicant: MOTOROLA INC

Inventor： ASHLEY JAMES PATRICK ,  PROCTOR LEE MICHAEL

IPC: H04L12/18 ,  H04B7/26 ,  H04M3/56 ,  H04Q11/00 ,  H04W4/00

CPC classification number: H04M3/561 ,  H04M2203/1091 ,  H04M2207/18 ,  H04W4/00

Abstract: An apparatus (200) for providing a multi-party speech connection for use in a wireless communication system (10). The apparatus (200) comprises a first speech encoder (202) producing a first encoded speech signal, a second speech encoder (20) producing a second encoded speech signal, a conference circuit (22), and a speech decoder (208) responsive to the conference circuit (22). The conference circuit (22) receives the first and second speech encoded signals and produces a multiplexed encoded speech signal. The speech decoder (208) receives the multiplexed encoded speech signal and produces a decoded speech signal.