PDF-DIGITAL SIGNALS SAMPLING AND QUANTIZATION Digital Signals Sampling and Quantization

We will assume here that the independent variable is time denoted by and the dependent variable could be any physical measurementvariable which changes over time think for example of a time varying electric voltage We will denote the generic measur. Decimation or downsampling reduces the sampling rate whereas expansion or upsampling fol lowed by interpolation increases the sampling rate Some applications of multirate signal processing are Upsampling ie increasing the sampling frequency before D Analog and Digital. Analog and Digital Data & Signals. Periodic & Aperiodic Signals. Contents. Information can be voice, image, numeric data, characters or any message that is readable and has meaning to the destination . 5. Speech Coding. Low Bit-rate Voice Coding. Voice is an analogue signal. Needed to be transformed in a digital form (bits). Speech signal is not random=>can be encoded using fewer bits as compared to random signal. نيما خادمي کلانتري. Email: nimakhademi@aut.ac.ir. Properties (1). Inaudibility. Similarity between the original and watermarked signal. Robustness. Ability to detect the watermark after common signal processing and malicious attacks. Samyoung. Bang. #. , . Kwangsoo. Han. ‡. , . Andrew . B. . Kahng. ‡†. and Mulong . Luo. †. Presented By: Siddhartha Nath. Outline. Introduction and Related Works. Crosstalk-Aware Layout . Optimization. How do we represent a continuously variable signal digitally?. Sampling. Sampling rate – number of measurements per unit time. Sampling depth or . quantization . – number of gradations by which the measurement can be recorded. x(t. ). x~(t. ). Sound is audible in 20 Hz to 20 kHz range:. . f. max. = 20 kHz and the Nyquist rate 2 . f. max. = 40 kHz . What is the extra 10% of the bandwidth used?. Rolloff. from passband to stopband in the magnitude response of the anti-aliasing filter. Lynne . Grewe. and . Sushmita. . Pandey. California State University East Bay. lynne.grewe@csueastbay.edu. The Goal. Using Social Data to make Social Advertisement Recommendations.. . Confusing Signals. Communication ought to be adaptive. Attract mates. Scare off intruders. Advertise fitness. Warn of predators. Not always obvious to scientists what the value of certain signals . is. Instructor: . Dr. Ghazi Al Sukkar. Dept. of Electrical Engineering. The . University of Jordan. Email: . ghazi.alsukkar@ju.edu.jo. 1. Fall 2014. 2. Course Details. Objective. Establish a background in Signal and System Analysis. and Computers. Part D. Ping Hsu, . Winncy. Du, Ken Youssefi . 2. Mechatronics. – a design process that includes. M. echanical engineering. E. lectrical engineering. C. ontrol engineering . C. omputer engineering. Chapter 4: Reading. . Assignment. Reading. . Assignment. Media Coding and Content Processing: Chapter 3 (Sections 3.1 …. . 3.4). Multimedia Signals and Systems (Chapter. . 2). Fundamentals of Multimedia (Chapter 6: Section. of CompletionThis certificate is awarded to Nicola Zarofor successful completion of 40-hoursVXL-301 Exterior Day and Night Renderingtraining course date: 06.11.2015 V-Ray Training Center Instructor ID April . 9, . 2012. University . of . Illinois. Signals. A signal is an asynchronous notification of an event. Asynchronous. :. . could occur at any time. Interrupts receiving process; jumps to . signal handler .