公开(公告)号：US20210201937A1

公开(公告)日：2021-07-01

申请号：US16895827

申请日：2020-06-08

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Charles Kasimer SESTOK, IV ,  David Patrick MAGEE ,  Tarkesh PANDE

IPC: G10L25/84

Abstract: Techniques for target input detection, including receiving input data, dividing the input data into data blocks, determining a detection feature value for a first data block, determining a detection threshold based on a set of detection feature statistics determined for a background sampling time period, and determining a target signal has been received based on a comparison between the detection feature value for the first data block to the detection threshold.

公开(公告)号：US20220260642A1

公开(公告)日：2022-08-18

申请号：US17463186

申请日：2021-08-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Charles Kasimer SESTOK, IV ,  David Patrick MAGEE

IPC: G01R31/389 ,  G01R31/396 ,  G01R31/3835

Abstract: A method includes determining a droop component of a measured parameter of a device under test (DUT). The measured parameter is responsive to an excitation signal having a frequency component, and the droop component is determined responsive to a first value of the parameter at a first time and a second value of the parameter at a second time. The parameter at the first time has a first phase value, and the parameter at the second time has a second phase value. The first phase value is equal to the second phase value. The method also includes correcting a frequency domain representation of the parameter by applying the droop component at a frequency of the representation of the parameter corresponding to the frequency component of the excitation signal.

公开(公告)号：US20210201936A1

公开(公告)日：2021-07-01

申请号：US16730546

申请日：2019-12-30

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Aditya Sunil JOGLEKAR ,  Charles Kasimer SESTOK, IV ,  David Patrick MAGEE

IPC: G10L25/84 ,  G10L21/02 ,  G10L25/21 ,  G10L25/93

Abstract: A method includes selecting a frame of an audio signal. The method further includes determining a first power spectral density (PSD) distribution of the frame. The method further includes generating a first reference PSD distribution indicating an estimate of background noise in the frame based on a non-linear weight, a second reference PSD distribution of a previous frame of the audio signal, and a second PSD distribution of the previous frame. The method further includes determining whether voice activity is detected in the frame based on the first PSD distribution of the frame and the first reference PSD distribution.

公开(公告)号：US20240310440A1

公开(公告)日：2024-09-19

申请号：US18676787

申请日：2024-05-29

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Charles Kasimer SESTOK, IV ,  David Patrick MAGEE

IPC: G01R31/319 ,  G01R31/3167 ,  H03M1/06 ,  H03M1/10

CPC classification number: G01R31/31922 ,  G01R31/3167 ,  G01R31/31924 ,  H03M1/0629 ,  H03M1/1071

Abstract: A circuit comprises a driver circuit, a processing circuit, and a control circuit. The driver circuit has a first frequency control input and a driver output. The processing circuit has a sense input, a second frequency control input, and a parameter output. And the control circuit has a first frequency control output and a second frequency control output, the first frequency control output coupled to the first frequency control input, and the second frequency control output coupled to the second frequency control input.

公开(公告)号：US20220268838A1

公开(公告)日：2022-08-25

申请号：US17589779

申请日：2022-01-31

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Charles Kasimer SESTOK, IV ,  David Patrick MAGEE

IPC: G01R31/319 ,  G01R31/3167 ,  H03M1/10 ,  H03M1/06

Abstract: A circuit configured to: generate a reference clock signal; generate an excitation signal at a target frequency having a period that is a first integer number of cycles of the reference clock signal; update a driver circuit at an update frequency having a period that is a second integer number of cycles of the reference clock signal; digitize sense signals resulting from the excitation signal at a frequency having a period that is a third integer number of cycles of the reference clock signal; identify a fourth integer number of sense signal samples; optionally utilize an excitation control signal having a period that is a fifth integer number of cycles of the reference clock signal; and minimize harmonics at the target frequency of the excitation signal based on the first integer number, the second integer number, the third integer number, the fourth integer number, and possibly the fifth integer number.

公开(公告)号：US20220163590A1

公开(公告)日：2022-05-26

申请号：US17532970

申请日：2021-11-22

Applicant: TEXAS INSTRUMENTS INCORPORATED

Inventor： Charles Kasimer SESTOK, IV ,  David Patrick MAGEE ,  Yevgen Pavlovich BARSUKOV

IPC: G01R31/367 ,  G01R31/3842 ,  G01R31/389

Abstract: A circuit for determining device under test (DUT) model parameters is described. The circuit includes a parameter estimator circuit configured to: obtain initial values for DUT model parameters based on sense signal samples; execute a parameter convergence model having a regularization parameter and a cost function that accounts for error residuals; and obtain final values for the DUT model parameters by adjusting the regularization parameter in iterations of the parameter convergence model as a function of cost function improvement until the parameter convergence model converges to within a target tolerance.