Accession Number:

AD0753118

Title:

Difference-Pulse Code Modulation Analysis and Comparative Evaluation.

Descriptive Note:

Scientific rept.,

Corporate Author:

NORTH CAROLINA STATE UNIV RALEIGH DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

• Paez,Mario D.

Report Date:

1972-11-15

Pagination or Media Count:

77.0

Abstract:

Optimum Minimum-MSE quantizers for speech and TV are developed. Difference-PCM DIFPCM is presented as an efficient scheme for digital encoding of speech and TV. This DIFPCM is analyzed theoretically, tested with real speech and its performance is compared with that of PCM and DPCM with optimum and logarithmic quantizing characteristics. The performance criteria used in this study are SN and Dynamic Range. The performance of DIFPCM is found to lie midway between that of PCM and DPCM. Author

Descriptors:

• *CODING
• SPEECH
• PULSE CODE MODULATION
• TELEVISION SYSTEMS
• DECODING
• SIGNAL TO NOISE RATIO
• INTEGRAL TRANSFORMS
• PROBABILITY DENSITY FUNCTIONS
• CURVE FITTING
• GRAPHICS

Subject Categories:

• Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE