Harprit Chhatwal

Title: Harprit Chhatwal: Innovator in Adaptive Transform Coding

Introduction

Harprit Chhatwal is a notable inventor based in San Diego, CA, recognized for his contributions to the field of adaptive transform coding. With a total of 2 patents, Chhatwal has developed innovative methods that enhance the processing of voice signals.

Latest Patents

Chhatwal's latest patents include "Methods and apparatus for reconstructing non-quantized adaptively" and "Adaptive transform coder having long term predictor." The first patent focuses on reconstructing non-quantized adaptively transformed voice signals through noise shaping. This involves scaling the spectral envelope before generating bit allocation and energy substitution, which is achieved after dequantization. The method generates spectral envelope information for each block of transform coefficients based on side information, allowing for the substitution of generated transform coefficients into the blocks.

The second patent addresses the removal of periodicity from a speech signal in a transform coder prior to quantization. This method involves determining the pitch in sample blocks, calculating a periodicity value based on the pitch and long-term predictor parameters, and generating revised blocks of difference samples for adaptive transform coding.

Career Highlights

Chhatwal has worked with companies such as Pacific Communication Science, Inc. and Pacific Communications Sciences, Inc. His experience in these organizations has contributed to his expertise in the field of adaptive transform coding.

Collaborations

Chhatwal has collaborated with notable individuals in his field, including his coworker Philip J. Wilson.

Conclusion

Harprit Chhatwal's innovative work in adaptive transform coding has significantly advanced the processing of voice signals. His patents reflect a deep understanding of the complexities involved in signal reconstruction and coding.