"Dude, Where's My... Signals and Systems Textbook?" • Joseph Picone Inst. for Signal and Info. Processing Dept. Electrical and Computer Eng. Mississippi State University • Contact Information: Box 9571 Mississippi State University Mississippi State, Mississippi 39762 Tel: 662-325-3149 Fax: 662-325-2298 Email: [email protected]IEEE: MSU STUDENT BRANCH • URL: http://www.isip.msstate.edu/publications/seminars
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"Dude, Where's My... Signals and Systems Textbook?" Joseph Picone Inst. for Signal and Info. Processing Dept. Electrical and Computer Eng. Mississippi.
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"Dude, Where's My... Signals and Systems Textbook?"
A funny thing happened on the way to an IEEE section talk at IIT in 1980... I found a career. I'll relate the rest of this story, including a couple of nice demos during this talk (hint: her name is Julie). I'll review some of the early history of digital signal processing and describe some of the speech applications that transformed this field into one of the single largest semiconductor markets today. I will show how signal processing research elegantly combines mathematics, software, and computer hardware to produce innovative technology such as cell phones and computers enhanced with speech recognition. Oh yeah, and I'll try to explain why we choose to torture you with a class called Signals and Systems.
Joseph Picone is currently a Professor in the Department of Electrical and Computer Engineering at Mississippi State University, where he also directs the Institute for Signal and Information Processing. He has previously been employed by Texas Instruments and AT&T Bell Laboratories. Dr. Picone received his Ph.D. in Electrical Engineering from Illinois Institute of Technology in 1983. He is a Senior Member of the IEEE and a registered Professional Engineer.
CASE STUDIES
• Introduced at the Summer Consumer Electronics Show in Chicago
• First commercial speech synthesis consumer toy
• Based on linear prediction• Contained a proprietary speech
synthesis chip
SPEAK & SPELL™ (JUNE 1978)
• Left to right: Gene Frantz, Richard Wiggins, Paul Breedlove and Larry Brantingham (1978)
CASE STUDIES
• Yes / no / true / false recognizer
• Answer questions about history
• Variety of learning modules
• Speaker independent recognition
• Microphone + children???• Won several industry design awards
for the mechanical design
VOYAGER™ (JUNE 1988)
CASE STUDIES
• Worlds of Wonder approach TI in September of 1988.
• Can you put this toy on the market by Thanksgiving?
• 10-word speaker dependent isolated word recognizer
• 100 sentences for synthesis
• “Transparent training”
• First large-scale consumer toy application for a DSP
JULIE (DECEMBER 1988)
CASE STUDIES
• Voice verification for calling card security
• First wide-spread deployment of recognition technology in the telephone network
• Stimulated interest in voice dialing and other user-programmable features
• Original application was obsolete before wide-scale deployment
WATSON (EARLY 1990’S)
CASE STUDIES
Jack Deller said:
• model voice with a digital all-pole filter
• identify a person by their filter coefficients
• diagnose a disease by shifts in these coefficients
• recognize the words being spoken using pattern matching techniques
• maximum entropy, linear prediction, and a few other big words I didn’t understand
... and I was hooked ...
WHY ATTEND IEEE TALKS?
CASE STUDIES
• Deller said you can replace this:
DIGITAL FILTERS
• With this:
• What are the advantages?
HUMAN LANGUAGE TECHNOLOGYSPEECH RECOGNITION RESEARCH?
• Why do we work on speech recognition?
“Language is the preeminent trait of the human species.”
“I never met someone who wasn’t interested in language.”
“I decided to work on language because it seemed to bethe hardest problem to solve.”
• Why should we work on speech recognition?
• Antiterrorism, homeland security, military applications