cdc@uafhcx.uucp (C. D. Covington) (02/07/90)
1. Comparisons of DSP peripherals.
a. Atlanta Signal Processors.
b. Ariel.
c. Manufacturers Evaluation Boards/Development Kits.
TI, Motorola, INMOS, NEC, etc.
d. Myriads of others I am woefully negligent in not naming...
comments on cost, speed, number of processors, acceptable host systems,
required graphics, problem domains, A/D D/A configurations, ....
2. Discussion of application of DSP to acoustic environments.
a. The old auditorium feedback problem. (I have made some measurements
on this one myself.)
b. Applications of adaptive filtering for active noise cancelation:
issues include coefficient precision, stability, achievable suppression,
types of noise, etc.
3. Graphical Programming
[I developed a graphical programming language called GOSPL as funded by
TI to run on an Explorer with an Odyssey board, i.e. 4 TMS32020's. This
concept has been substantially extended in systems like the block diagram
compiler (BDC) of Lincoln Labs and the Gabriel system recently described.
This area really seems to be hot right now.]
a. Efficiency of code.
b. Speed of Development.
c. Scope of problem domains available.
d. Prototyping/Testing tools.
e. Hardware/Software platform requirements.
4. Speech Processing Hardware
a. Sources and comparison of speech synthesizers
1. Text-to-Speech.
2. Speech Response Units.
b. Sources and comparison of speech recognizers
1. Speaker dep./indep.
2. Training required.
3. Acoustical sensitivities (microphone placement, noise, etc.)
4. Vocabulary size.
5. Cost, Hardware, Performance, etc.
c. Sources and comparison of speech coding systems
1. VS&F market.
2. Voice Mail coding algorithms.
(ref. articles by Jayant et al)
3. Real-time vs non-real time applications.
5. Sources of information about the DSP marketplace.
a. ICASSP
b. Speech Tech
c. Telecommunications conferences
d. Image processing conferences
C. David Covington WA5TGF INTERNET cdc@uafhcx.uark.edu
Assistant Professor, Electrical Engineering (501)575-6583 campus office
University of Arkansas 575-5379 research office
Fayetteville, AR 72701 575-3041 research lab