Cart (Loading....) | Create Account
Close category search window
 

Delta modulation of pitch, formant, and amplitude signals for the synthesis of voiced speech

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

1 Author(s)
Jayant, N. ; Bell Laboratories, Murray Hill, NJ, USA

A computer simulation was performed to demonstrate the feasibility of delta modulation (DM) as a simple alternative to pulse-code modulation (PCM) for encoding the control signals of a voiced-speech synthesizer. Quantized signals representing the time variations of pitch period, amplitude, and the first three formant frequencies, all band limited to 16 Hz, were available in a 1500-b/s PCM format. Each of the five signals was over sampled at 100 Hz for delta encoding, resulting in a representation at 500 b/s (an information rate utilized recently for an adequate PCM representation of the control signals). Low-pass filtered versions of the DM signals were used to synthesize the original all-voiced utterance with a quality very close to that obtaining in the original 1500-b/s system. Both "linear" and "adaptive" delta modulators were considered; in the latter case, the step size is adapted continuously to the changing slope statistics of an input signal and this provides more efficient encoding. When additional band limiting was applied to the original control signals, resulting in a 700-b/s representation adaptive DM at 250 b/s was sufficient to encode the information without further degradation of the synthetic speech.

Published in:

Audio and Electroacoustics, IEEE Transactions on  (Volume:21 ,  Issue: 3 )

Date of Publication:

Jun 1973

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.