公开(公告)号：US10468045B2

公开(公告)日：2019-11-05

申请号：US15815304

申请日：2017-11-16

申请人： VOICEAGE CORPORATION

发明人： Redwan Salami ,  Vaclav Eksler

IPC分类号： G10L19/06 ,  G10L25/21 ,  G10L19/12 ,  G10L19/16 ,  G10L19/26 ,  G10L19/24 ,  G10L25/06 ,  G10L19/00 ,  G10L19/07 ,  G10L21/038

摘要： Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate S1 to a sampling rate S2. A power spectrum of a LP synthesis filter is computed, at the sampling rate S1, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate S1 to the sampling rate S2. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S2. The autocorrelations are used to compute the LP filter parameters at the sampling rate S2.

公开(公告)号：US20210375296A1

公开(公告)日：2021-12-02

申请号：US17444799

申请日：2021-08-10

申请人： VOICEAGE EVS LLC

发明人： Redwan SALAMI ,  Vaclav EKSLER

IPC分类号： G10L19/12 ,  G10L19/06 ,  G10L19/16 ,  G10L19/24 ,  G10L19/26 ,  G10L25/06

摘要： Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate S1 to a sampling rate S2. A power spectrum of a LP synthesis filter is computed, at the sampling rate S1, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate S1 to the sampling rate S2. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S2. The autocorrelations are used to compute the LP filter parameters at the sampling rate S2.

公开(公告)号：US20230326472A1

公开(公告)日：2023-10-12

申请号：US18334853

申请日：2023-06-14

申请人： VOICEAGE EVS LLC

发明人： Redwan SALAMI ,  Vaclav EKSLER

IPC分类号： G10L19/12 ,  G10L19/06 ,  G10L19/16 ,  G10L19/24 ,  G10L19/26 ,  G10L25/06

CPC分类号： G10L19/12 ,  G10L19/06 ,  G10L19/173 ,  G10L19/24 ,  G10L19/167 ,  G10L19/26 ,  G10L25/06 ,  G10L19/07

摘要： Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate S1 to a sampling rate S2. A power spectrum of a LP synthesis filter is computed, at the sampling rate S1, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate S1 to the sampling rate S2. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S2. The autocorrelations are used to compute the LP filter parameters at the sampling rate S2.

公开(公告)号：US11721349B2

公开(公告)日：2023-08-08

申请号：US17444799

申请日：2021-08-10

申请人： VOICEAGE EVS LLC

发明人： Redwan Salami ,  Vaclav Eksler

IPC分类号： G10L19/04 ,  G10L19/12 ,  G10L19/06 ,  G10L19/16 ,  G10L19/24 ,  G10L19/26 ,  G10L25/06 ,  G10L19/07 ,  G10L21/038 ,  G10L19/00

CPC分类号： G10L19/12 ,  G10L19/06 ,  G10L19/167 ,  G10L19/173 ,  G10L19/24 ,  G10L19/26 ,  G10L25/06 ,  G10L19/07 ,  G10L21/038 ,  G10L2019/0002 ,  G10L2019/0004 ,  G10L2019/0016

摘要： Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate S1 to a sampling rate S2. A power spectrum of a LP synthesis filter is computed, at the sampling rate S1, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate S1 to the sampling rate S2. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S2. The autocorrelations are used to compute the LP filter parameters at the sampling rate S2.

公开(公告)号：US11282530B2

公开(公告)日：2022-03-22

申请号：US16594245

申请日：2019-10-07

申请人： VOICEAGE EVS LLC

发明人： Redwan Salami ,  Vaclav Eksler

IPC分类号： G10L19/04 ,  G10L19/24 ,  G10L25/21 ,  G10L19/12 ,  G10L19/06 ,  G10L19/16 ,  G10L19/26 ,  G10L25/06 ,  G10L19/07 ,  G10L21/038 ,  G10L19/00

摘要： Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate S1 to a sampling rate S2. A power spectrum of a LP synthesis filter is computed, at the sampling rate S1, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate S1 to the sampling rate S2. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S2. The autocorrelations are used to compute the LP filter parameters at the sampling rate S2.

公开(公告)号：US10431233B2

公开(公告)日：2019-10-01

申请号：US15814083

申请日：2017-11-15

申请人： VOICEAGE CORPORATION

发明人： Redwan Salami ,  Vaclav Eksler

IPC分类号： G10L19/06 ,  G10L25/21 ,  G10L19/12 ,  G10L19/16 ,  G10L19/26 ,  G10L19/24 ,  G10L25/06 ,  G10L19/00 ,  G10L19/07 ,  G10L21/038

摘要： Methods, an encoder and a decoder are configured for transition between frames with different internal sampling rates. Linear predictive (LP) filter parameters are converted from a sampling rate S1 to a sampling rate S2. A power spectrum of a LP synthesis filter is computed, at the sampling rate S1, using the LP filter parameters. The power spectrum of the LP synthesis filter is modified to convert it from the sampling rate S1 to the sampling rate S2. The modified power spectrum of the LP synthesis filter is inverse transformed to determine autocorrelations of the LP synthesis filter at the sampling rate S2. The autocorrelations are used to compute the LP filter parameters at the sampling rate S2.