Open Access. Powered by Scholars. Published by Universities.®
Physical Sciences and Mathematics Commons™
Open Access. Powered by Scholars. Published by Universities.®
Articles 1 - 1 of 1
Full-Text Articles in Physical Sciences and Mathematics
Block Transform Coding Of Presample Filtered Data, Thomas A. Shull
Block Transform Coding Of Presample Filtered Data, Thomas A. Shull
Electrical & Computer Engineering Theses & Dissertations
This dissertation addresses the application of non-adaptive transform coding for bit rate reduction of presampled filtered data. Transform coding is examined as an alternative to conventional pulse code modulation (PCM) for multi-source, fixed rate data acquisition systems. Typical bandlimiting presample filters introduce redundancy into the sequence of data samples. Linear transformation of successive N-length blocks of the data sequence and subsequent binary coding of the resulting components is shown to lead to reduced average bit rate for the same less distortion as PCM.
Four Butterworth filters, two corresponding to eight bit PCM systems, and two corresponding to ten bit PCM …