Mariscela Amador-Hernandez

Title: Mariscela Amador-Hernandez: Innovator in Speech Recognition Technology

Introduction

Mariscela Amador-Hernandez is a notable inventor based in San Jose, CA (US). He has made significant contributions to the field of speech recognition technology, holding 2 patents that showcase his innovative approach to enhancing communication systems.

Latest Patents

His latest patents include a "System and method for speech recognition using an enhanced phone set." This invention comprises speech data, an enhanced phone set, and a transcription generated by a transcription process. The transcription process selects appropriate phones from the enhanced phone set to represent the acoustic-phonetic content of the speech data. The enhanced phone set includes base-phones and composite-phones, while a phone dataset includes the speech data and the transcription. Additionally, the invention features a transformer that applies transformation rules to the phone dataset to produce a transformed phone dataset, which can be utilized in training a speech recognizer, such as a Hidden Markov Model.

Another significant patent is "Speech detection with noise suppression based on principal components analysis." This method effectively suppresses background noise in a speech detection system. It comprises a filter bank for separating source speech data into discrete frequency sub-bands to generate filtered channel energy. A noise suppressor weights the frequency sub-bands to improve the signal-to-noise ratio of the resultant noise-suppressed channel energy. The noise suppressor includes a subspace module for using a Karhunen-Loeve transformation to create a subspace based on the background noise, a projection module for generating projected channel energy, and a weighting module for applying calculated weighting values to generate the noise-suppressed channel energy.

Career Highlights

Throughout his career, Mariscela has worked with prominent companies, including Sony Corporation. His experience in the industry has allowed him to develop and refine his innovative ideas in speech recognition technology.

Collaborations

Mariscela has collaborated with talented individuals such as Duanpei Wu and Miyuki Tanaka, contributing to the advancement of his projects and inventions.

Conclusion

Mariscela Amador-Hernandez is a distinguished inventor whose work in speech recognition technology has made a significant impact. His patents reflect his dedication to improving communication systems and enhancing user experience.