Company Filing History:
1 out of 832,812 Years Active: 2022
Title: Hirak Dasgupta: Innovator in Real-Time Pitch Tracking Technology
Introduction
Hirak Dasgupta is a notable inventor based in Kolkata, India. He has made significant contributions to the field of speech processing, particularly in the area of pitch tracking. His innovative techniques have the potential to enhance various applications in speech technology.
Latest Patents
Hirak Dasgupta holds a patent for a technique titled "Real-time pitch tracking by detection of glottal excitation epochs in speech signal using Hilbert envelope." This method is designed for real-time processing and focuses on pitch tracking by 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 is applicable in various fields, including speech codecs, voice conversion, speech and speaker recognition, diagnosis of voice disorders, and speech training aids.
Career Highlights
Hirak Dasgupta has established himself as a prominent figure in the realm of speech technology. His work has garnered attention for its practical applications and innovative approach to pitch estimation. His contributions are vital for advancing the capabilities of speech processing systems.
Collaborations
Hirak has collaborated with notable colleagues, including Prem Chand Pandey and Nataraj Kathriki Shambulingappa. These collaborations have further enriched his work and expanded the impact of his innovations in the field.
Conclusion
Hirak Dasgupta's contributions to real-time pitch tracking technology exemplify the importance of innovation in speech processing. His patented techniques are set to play a crucial role in enhancing various applications related to speech and voice technology.