Company Filing History:
2 out of 4 
2 out of 8,384 
1 out of 4,997 
Years Active: 1989-2006
Title: The Innovations of David H. Staelin
Introduction
David H. Staelin is a notable inventor based in Wellesley, MA (US), recognized for his contributions to speech processing technology. With a total of 5 patents, Staelin has made significant advancements in the field of audio processing and communication.
Latest Patents
One of Staelin's latest inventions is the Pitch-synchronous speech processing. This invention involves two main steps: first, dividing the speech into pitch periods or pseudo pitch periods for unvoiced speech, where the breaks occur at the first zero-crossing preceding each glottal pulse for voiced speech and at any arbitrary point for unvoiced speech. The second step is to compute the log-magnitude of the Discrete Fourier Transform (DFT) of each pitch-period waveform and interpolate each log-magnitude spectrum to a common regular grid that can accommodate the spectrum of a waveform having the longest pitch period anticipated.
Another innovative concept he has developed is powered roller skates, showcasing his versatility as an inventor.
Career Highlights
Throughout his career, David H. Staelin has worked with prominent organizations, including Empower Corporation and the Massachusetts Institute of Technology. His work has significantly impacted the fields of audio processing and mobility technology.
Collaborations
Staelin has collaborated with notable individuals such as Jeffrey Hastings Lang and Carlos R. Cabrera-Mercader, contributing to various innovative projects and advancements in technology.
Conclusion
David H. Staelin's contributions to innovation, particularly in speech processing and mobility, highlight his role as a significant figure in the field of invention. His work continues to influence technology and improve communication methods.