Alex A Lopez-Estrada

US Patent:

6732071, May 4, 2004

Filed:

Sep 27, 2001

Appl. No.:

09/967440

Inventors:

Alex A. Lopez-Estrada - Chandler AZ
Mark P. VanDeusen - Chandler AZ

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G10L 1904

US Classification:

704219, 704222, 704225, 7042001

Abstract:

According to one aspect of the invention, a method is provided in which audio samples representing an input audio signal are received. The input audio samples are transformed into a vector of spectral values in a frequency domain. A value of a quantizing parameter is determined that satisfies one or more criteria based, at least in part, on a modified Newtonian search process, the determined value of the quantizing parameter being used to quantize the respective vector of spectral values to generate a vector of quantized values.

US Patent:

7020603, Mar 28, 2006

Filed:

Feb 7, 2002

Appl. No.:

10/071653

Inventors:

Alex A Lopez-Estrada - Chandler AZ, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G10L 19/00

US Classification:

7042001, 704500

Abstract:

A system and method of encoding an audio stream includes generation of a distortion threshold templates database that is accessible by a perceptual audio encoder. The audio encoder utilizes the threshold templates to operate a compression algorithm, obviating the need to implement a psycho-acoustic model to generate a distortion threshold for each compression operation. A similar templates database may be used in a transcoding operation, again bypassing a psycho-acoustic modeling operation and promoting system efficiency.

US Patent:

7050965, May 23, 2006

Filed:

Jun 3, 2002

Appl. No.:

10/158908

Inventors:

Alex A. Lopez-Estrada - Chandler AZ, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G10L 19/00

US Classification:

7042001, 704500, 704501, 704502, 704503, 704504

Abstract:

A method of normalizing received digital audio data includes decomposing the digital audio data into a plurality of sub-bands and applying a psycho-acoustic model to the digital audio data to generate a plurality of masking thresholds. The method further includes generating a plurality of transformation adjustment parameters based on the masking thresholds and desired transformation parameters and applying the transformation adjustment parameters to the sub-bands to generate transformed sub-bands.

US Patent:

7139470, Nov 21, 2006

Filed:

Aug 17, 2001

Appl. No.:

09/932806

Inventors:

Alex A. Lopez-Estrada - Chandler AZ, US
Jeffery S. Peel - Chandler AZ, US
Ajit P. Joshi - Hillsboro OR, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H04N 7/26
H04N 5/91

US Classification:

386109, 386 46, 386 95, 386125

Abstract:

Navigation information can be generated from compressed and packetized MPEG streams, and the navigation information then placed in a separate navigation file that can be accessed to permit navigation functions to be performed during decompression and playback of the MPEG stream. An authoring tool may be used to parse the MPEG stream and generate the navigation data. The navigation data may then be used to select individual start points, different audio channels, special effects, etc. , during playback.

US Patent:

7245237, Jul 17, 2007

Filed:

Sep 17, 2002

Appl. No.:

10/245547

Inventors:

Alex A. Lopez-Estrada - Chandler AZ, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

H03M 7/00

US Classification:

341 61, 708313, 375242

Abstract:

According to some embodiments, digital sampling rate conversion is performed using a poly-phase filter and a polynomial interpolator.

US Patent:

7509364, Mar 24, 2009

Filed:

Jan 31, 2005

Appl. No.:

11/047791

Inventors:

Alex A. Lopez-Estrada - Chandler AZ, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 17/10

US Classification:

708319

Abstract:

Apparatus and methods are provided to implement an efficient partial output finite impulse response (FIR) filter. In one embodiment, the filter operates by first receiving a set of samples from a streaming data source via a communications medium. Next the set of samples are organized into a convolution matrix which is decomposed by generating a plurality of diagonal matrixes, each diagonal matrix corresponding with a pre-addition and a post-addition matrix. The filtered samples are generated, in one embodiment, using the plurality of diagonal matrixes, and the filtered samples are output to a communications medium.

US Patent:

7580905, Aug 25, 2009

Filed:

Dec 15, 2003

Appl. No.:

10/736657

Inventors:

Alex A. Lopez-Estrada - Chandler AZ, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G06F 15/18

US Classification:

706 14, 717108

Abstract:

A platform is adaptively configured with one of one or more pre-established configuration parameter values, based at least in part on one or more performance events observed during the platform's execution of a workload.

US Patent:

7269554, Sep 11, 2007

Filed:

Feb 19, 2004

Appl. No.:

10/783556

Inventors:

Alex A. Lopez-Estrada - Chandler AZ, US
Mark P. VanDeusen - Chandler AZ, US

Assignee:

Intel Corporation - Santa Clara CA

International Classification:

G10L 19/02

US Classification:

704229, 704230, 704225, 704219, 7042001

Abstract:

According to one aspect of the invention, a method is provided in which audio samples representing an input audio signal are received. The input audio samples are transformed into a vector of spectral values in a frequency domain. A value of a quantizing parameter is determined that satisfies one or more criteria based, at least in part, on a modified Newtonian search process, the determined value of the quantizing parameter being used to quantize the respective vector of spectral values to generate a vector of quantized values.