Nataraj Kathriki Shambulingappa

Title: Nataraj Kathriki Shambulingappa: Innovator in Real-Time Pitch Tracking Technology

Introduction

Nataraj Kathriki Shambulingappa is a notable inventor based in Davangere, India. He has made significant contributions to the field of speech processing, particularly in the area of pitch tracking. His innovative techniques are designed to enhance the accuracy and efficiency of speech signal processing.

Latest Patents

Nataraj holds a patent for a groundbreaking technique titled "Real-time pitch tracking by detection of glottal excitation epochs in speech signal using Hilbert envelope." This method is suitable for real-time processing and focuses on detecting glottal excitation epochs in speech signals. The technique utilizes the Hilbert envelope to improve the saliency of these epochs while minimizing the ripples caused by the vocal tract filter. The processing involves dynamic range compression, calculation of the Hilbert envelope, and epoch marking. The Hilbert envelope is derived from the output of a FIR filter-based Hilbert transformer and a delay-compensated signal. The epoch marking employs a dynamic peak detector with fast rise and slow fall, along with nonlinear smoothing to enhance the saliency of the epochs. This innovative technique has applications in speech codecs, voice conversion, speech and speaker recognition, diagnosis of voice disorders, and speech training aids.

Career Highlights

Nataraj has dedicated his career to advancing speech processing technologies. His work has been instrumental in developing methods that improve the quality and reliability of pitch estimation in various applications. His innovative approach has garnered attention in the field and has the potential to impact numerous industries.

Collaborations

Nataraj has collaborated with esteemed colleagues such as Prem Chand Pandey and Hirak Dasgupta. These collaborations have contributed to the development and refinement of his innovative techniques.

Conclusion

Nataraj Kathriki Shambulingappa is a pioneering inventor whose work in real-time pitch tracking technology has the potential to revolutionize speech processing applications. His contributions are significant and continue to influence the field positively.