This inventor holds 3 USPTO granted patents. Top assignees: U.S. Philips Corporation, Koninklijke Philips Corporation N.v.. Active years: 1995-2002.
Company Filing History:
2 out of 14,087 
1 out of 21,871 
Years Active: 1995-2002
Title: Innovative Contributions of Inventor Chang X Ma
Introduction
Chang X Ma is a prominent inventor based in Eindhoven, Netherlands, who has made significant contributions to the field of speech processing technology. With a portfolio of three patents, Ma's work focuses on enhancing human communication through advanced techniques in audio signal processing.
Latest Patents
Chang X Ma's innovative spirit is evident in his latest patents. One of his notable inventions is the "Human speech processing apparatus for detecting instants of glottal closure." This invention aims to identify specific moments in human speech where the vocal cords close, which is essential for various speech processing applications such as glottal synchronous processing and speech synthesis. The apparatus employs high-pass filtering of the observed speech signal, allowing for the precise detection of glottal closure instants based on peak amplitude aggregates.
Another of his impactful inventions is the "Method and apparatus for manipulating an input signal to form an output." This method provides a framework for transforming an input signal, such as an audio signal, into an output signal of varying length. By utilizing successive overlapping time windows and segment signals, Chang X Ma’s technique facilitates the synthesis of output signals through the superposition of these segments, effectively allowing for advanced manipulation of audio information.
Career Highlights
Throughout his career, Chang X Ma has worked with esteemed organizations, including U.S. Philips Corporation and Koninklijke Philips Corporation N.V. His tenure at these companies has cemented his reputation as a valuable asset in the realm of technological innovation and development.
Collaborations
Chang X Ma has collaborated with notable individuals in the field, including Leonardus L Vogten and Werner D Verhelst. These collaborations have likely influenced his research and contributed to the advancements in the technologies he has developed.
Conclusion
Chang X Ma stands out as a visionary inventor in the field of speech processing, with a solid foundation built on his patents and collaborations. His work continues to pave the way for innovative audio technologies that enhance human communication and interaction. As the landscape of speech processing evolves, Chang X Ma's contributions are sure to remain influential.