The intelligibility of delta modulated speech

Delta modulation is a method of simplified coding for digital coding. An experimental delta modulation system for speech processing was built and tested. These tests demonstrated that delta modulation is a useful technique for digital voice communication; in fact, delta modulated speech is of a quality suitable for many applications.

[1]  G. E. Peterson,et al.  Revised CNC lists for auditory tests. , 1962, The Journal of speech and hearing disorders.

[2]  F. K. Bowers.  What use is delta modulation to the transmission engineer? , 1957, Transactions of the American Institute of Electrical Engineers, Part I: Communication and Electronics.

[3]  F. K. Bowers.  Deltamodulation for Cheap and Simple Telemetering , 1959, IRE Transactions on Space Electronics and Telemetry.