Issue
110, September 1999
Talking
Back: Adding Speech to Embedded Applications
by
Rodger Richey
Training
embedded apps to process speech may be as easy as
finding the right 8-bit micro. Don't let what Rodger
has to say about using an ADPCM algorithm and PWM
output to generate speech to go in one ear and out
the other.
SOFTWARE
- REFERENCES - RESOURCES - SOURCES
The
software for this article available here.
Download
a PDF of this article.
REFERENCES
[1]
N.S. Jayant and P. Noll, Digital Coding of Waveforms,
Principles and Applications to Speech and Video, Prentice
Hall, Englewood Cliffs, NJ, 1984.
[2]
P.E. Papamichalis, Practical Approaches to Speech Coding,
Prentice Hall, Englewood Cliffs, NJ, 1987.
[3]
IMA Compatibility Project, Recommended Practices for
Enhancing Digital Audio Compatibility in Multimedia
Systems, V.3.00, Oct. 1992.
[4]
R. Richey, Adaptive Differential Pulse Code Modulation
using PIC16/17 Microcontrollers, AN643, Embedded Control
Handbook, Microchip Technology, 1996.
[5]
J.D. Tardelli, E.W. Kreamer, P.A. La Follette, and P.D.
Gatewood, A Systematic Investigation of the Mean Opinion
Score (MOS) and the Diagnostic Acceptability Measure
(DAM) for Use in the Selection of Digital Speech Compression
Algorithms, ARCON, www.arcon.com/dsl/sl24a.html.
RESOURCES
Comp.speech
FAQ, www.speech.cs.cmu.edu/comp.speech
Dynastat
Inc., Subjective Testing and Evaluation of Voice
Communications Systems, www.bga.com/dynastat/index.html
T.
Robinson, Speech Analysis, Cambridge University
Engineering Dept., Speech Vision Robotics Group, www-svr.eng.cam.ac.uk/~ajr/SA95/SpeechAnalysis/SpeechAnalysis.html
J.
Woodard, Speech Coding, Dept. of Electronics
and Computer Science, University of Southampton, rice.ecs.soton.ac.uk/speech_codecs/index.html
SOURCES
PIC12C672, ’16C556A, ’16C774
Microchip Technology, Inc.
(480) 786-7200
Fax: (480) 899-9210
www.microchip.com
Amplifiers
National Semiconductor
(800) 272-9959
(408) 721-5000
Fax: (408) 739-9803
www.national.com
Texas
Instruments, Inc.
(508) 236-3800
www.ti.com
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