Daniel Lin

US Patent:

6385577, May 7, 2002

Filed:

Mar 14, 2001

Appl. No.:

09/805634

Inventors:

Daniel Lin - Montville NJ
Brian M. McCarthy - Lafayette Hill PA

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 1900

US Classification:

704223, 704201, 704219

Abstract:

A version of a speech signal and an output of a pitch synthesis filter and a linear predictive all-pole (LPC) filter is received. A system impulse response is produced based on in part the received pitch synthesis filter and LPC output. An excitation pulse location is determined so that the determined location minimizes an error between the speech signal version and the system impulse response. The speech signal is encoded with a representation of the determined location.

US Patent:

6389388, May 14, 2002

Filed:

Nov 13, 2000

Appl. No.:

09/711252

Inventors:

Daniel Lin - Montville NJ

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 1904

US Classification:

704219, 704220, 704221, 704222

Abstract:

A speech signal is encoded using code excited linear prediction for use in transmitting the speech signal to a receiver. The speech signal is sampled. A current sample of the speech signal is predicted based on in part a previous sample. An innovation sequence is determined based on in part a prediction error between the predicted current sample and the current sample of the speech signal. A code from each of a plurality of codebooks is selected. A combination of the selected codes is the determined innovation sequence. An index of the selected codes is identified and transmitted to the receiver. The transmitted index enables reconstruction of the speech signal at the receiver.

US Patent:

6611799, Aug 26, 2003

Filed:

Feb 26, 2002

Appl. No.:

10/083237

Inventors:

Daniel Lin - Montville NJ
Brian M. McCarthy - Lafayette Hill PA

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 1910

US Classification:

704219

Abstract:

Linear predictive coding (LPC) filter parameters are determined for use in encoding a voice signal. Samples of a speech signal using a z-transform function are pre-emphasized. The pre-emphasized samples are analyzed to produce LPC reflection coefficients. The LPC reflection coefficients are quantized by a voiced quantizer and by an unvoiced quantizer producing sets of quantized reflection coefficients. Each set is converted into respective spectral coefficients. The set which produces a smaller lag-spectral distance is determined. The determined set is selected to encode the voice signal.

US Patent:

6763330, Jul 13, 2004

Filed:

Feb 25, 2002

Appl. No.:

10/082412

Inventors:

Daniel Lin - Montville NJ

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 1912

US Classification:

704219, 704220, 704222, 704223

Abstract:

A receiver is used in decoding a received encoded signal. The received encoded speech signal is encoded using excitation linear prediction. The receiver receives the encoded speech signal. The encoded speech signal comprises a code, a pitch lag and a line spectral pair index. An innovation sequence is produced by selecting a code from each of a plurality of codebooks based on the code index. A line spectral pair quantization of a speech signal is determined using the line spectral pair index. A pitch lag is determined using the pitch lag index. A speech signal is reconstructed using the produced innovation sequence, the determined line spectral pair quantization and pitch lag.

US Patent:

6782359, Aug 24, 2004

Filed:

May 28, 2003

Appl. No.:

10/446314

Inventors:

Daniel Lin - Montville NJ
Brian M. McCarthy - Lafayette Hill PA

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 1904

US Classification:

704219, 704220, 704222

Abstract:

Linear predictive coding (LPC) filter parameters are determined for use in encoding a voice signal. Samples of a speech signal using a z-transform function are pre-emphasized. The pre-emphasized samples are analyzed to produce LPC reflection coefficients. The LPC reflection coefficients are quantized by a voiced quantizer and by an unvoiced quantizer producing sets of quantized reflection coefficients. Each set is converted into respective spectral coefficients. The set which produces a smaller lag-spectral distance is determined. The determined set is selected to encode the voice signal.

US Patent:

7013270, Mar 14, 2006

Filed:

Aug 23, 2004

Appl. No.:

10/924398

Inventors:

Daniel Lin - Montville NJ, US
Brian M. McCarthy - Lafeyette Hill PA, US

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 19/04

US Classification:

704219, 704220, 704222

Abstract:

The present invention is a method for determining linear predictive coding filter parameters for encoding a voice signal. The method includes sampling a voice signal, grouping the samples into a plurality of frames, generating a plurality of reflection coefficients for each frame of samples, quantizing the reflection coefficients, generating spectral coefficients from the quantized reflection coefficients, selecting a quantized reflection coefficient having the smallest log-spectral distance between a quantized spectrum, and an unquantized spectrum and, converting the selected quantized reflection coefficient to linear predictive coding (LPC) filter coefficient.

US Patent:

7085714, Aug 1, 2006

Filed:

May 24, 2004

Appl. No.:

10/852047

Inventors:

Daniel Lin - Montville NJ, US

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 19/12

US Classification:

704219, 704220, 704222, 704223

Abstract:

A method for processing speech in a spread spectrum communication system uses CELP speech encoded signals. A speech input receives samples of a speech signal and a codebook analysis block for selects an index of a code from each of a plurality of codebooks. A weighted synthesis filter is used in the generation of a prediction error between a predicted current sample and a current sample of the speech samples. The index is transmitted to the receiver to enable reconstruction of the speech signal at the receiver.

US Patent:

7444283, Oct 28, 2008

Filed:

Jul 20, 2006

Appl. No.:

11/490286

Inventors:

Daniel Lin - Montville NJ, US

Assignee:

InterDigital Technology Corporation - Wilmington DE

International Classification:

G10L 19/04

US Classification:

704219

Abstract:

A method and apparatus for processing speech in a wireless communication system uses CELP speech encoded signals. A speech input receives samples of a speech signal and a codebook analysis block for selects an index of a code from at least one of a plurality of codebooks. A weighted synthesis filter is used in the generation of a prediction error between a predicted current sample and a current sample of the speech samples. The index is transmitted to the receiver to enable reconstruction of the speech signal at the receiver.

Address:

3118 Fairhaven Ct, Ann Arbor, MI 48105

VIN:

1FAHP3FN7AW247751

Make:

FORD

Model:

FOCUS

Year:

2010