scholarly journals Processing of Digital Signals in (+1, -1) Binary System

2021 ◽  
Vol 9 (VI) ◽  
pp. 4008-4026
Author(s):  
P. Chaubey
Keyword(s):  
Binary System ◽  
Vlsi Design ◽  
Digital Signal ◽  
Differential Pulse ◽  
Second Order ◽  
Modulation Method ◽  
Number Representation ◽  
Pulse Code Modulation ◽  
Differential Pulse Code Modulation ◽  
Code Modulation

Digital Signal Processing in (+1, -1) system has been studied in detail. Effects of number representation on quantization and truncation of rounding have been discussed. First order and second order filters have been investigated. Differential pulse code modulation method of coding is being studied. It is found that this system is well suited for VLSI design. The hardware realization of different components of DPCM is easy and straight. The position and negative signals can be processed in a unified way. It gives better performance in comparison of two’s complement representation of conventional binary system. The effect of limit cycles, stability and round off noise in first and second order filter have been discussed too.

Audio Watermarking With Reduced Number of Random Samples

2018 ◽  
pp. 372-394
Author(s):  
Rohit Anand ◽  
Gulshan Shrivastava ◽  
Sachin Gupta ◽  
Sheng-Lung Peng ◽  
Nidhi Sindhwani
Keyword(s):  
Audio Signal ◽  
Digital Signal ◽  
Differential Pulse ◽  
Pulse Code Modulation ◽  
Differential Pulse Code Modulation ◽  
Random Samples ◽  
Code Modulation ◽  
Excellent Method ◽  
Audio Files ◽  
Host Signal

Digital signal watermarking is an indiscernible and safe transmission of freehold data through host signal that includes immersing into and extrication from the actual host. Some algorithms have been investigated for the strong and secure embedding and extraction of watermarks within the host audio files but they do not yet yield good results in compression and re-sampling. In this chapter, an excellent method is suggested for the compressed wave files that uses random carrier to immerse the watermark in the sequence of an audio signal. The watermark is embedded lucently in audio stream after adaptive differential pulse code modulation (ADPCM) before quantization. The proposed scheme has been implemented and its parameters are compared with the finest auditory watermarking method known. A tool has been used to measure the parameters to produce the results and tabular values. The larger PSNR and smaller BER prove that the suggested scheme is robust.

Digital Signal Processor: Adaptive Differential Pulse-Code-Modulation Coding

1981 ◽  
Vol 60 (7) ◽  
pp. 1547-1561 ◽  
Author(s):  
J. R. Boddie ◽  
J. D. Johnston ◽  
C. A. McGonegal ◽  
J. W. Upton ◽  
D. A. Berkley ◽  
...  
Keyword(s):  
Digital Signal Processor ◽  
Digital Signal ◽  
Differential Pulse ◽  
Pulse Code Modulation ◽  
Differential Pulse Code Modulation ◽  
Modulation Coding ◽  
Code Modulation ◽  
Signal Processor

Entropy-coded hybrid differential pulse-code modulation

1983 ◽  
Vol 19 (2) ◽  
pp. 63 ◽  
Author(s):  
N.M. Nasrabadi ◽  
S.K. Pal ◽  
R.A. King
Keyword(s):  
Differential Pulse ◽  
Pulse Code Modulation ◽  
Differential Pulse Code Modulation ◽  
Code Modulation
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