PPT-PCM Quantizer PCM stands for Pulse Code Modulation

Properties Alaw European standard law ulaw North American and Japanese Standard ITU Standardization 1972 Bit rate 64 kBit sec Compression ratio 2 128 kBit sec64 kBit sec. 0 BASIC TECHNIQUE This application note describes a technique for creating an analog to digital converter using a microcontroller with other low cost components Many applications do not require the speed associated with a dedicated hardware AD conver Common means of modulating data in digital communication Key advantage is that I can send mu ltiple signals using Time Division Multiplexing There are several pulse modulation techniques Pulse Amplitude Modulation Pulse Width Modulation Pulse Revision 1.0 Introduction Pulse code modulation (PCM) is a common method of digitizing or quantizing an analog waveform. For any analog-digital conversion process, the quantization step produces an e Husheng Li. The University of Tennessee. Chopper Sampling . We introduce a switching function such that . x_s. (t)=x(t)s(t), where. Nyquist. Criterion. The sampling rate should be at least twice the bandwidth of the signal, in order to fully reconstruct the signal.. Section 6.6. DSB/SC-AM . Modulation (Review). Frequency Shift . Property (Review). Frequency Spectrum of DSB/SC-AM . Signal (Review). Carrier Signal for Amplitude Modulation. Pulse Amplitude Modulation. Husheng Li. The University of Tennessee. Chopper Sampling . We introduce a switching function such that . x_s. (t)=x(t)s(t), where. Nyquist. Criterion. The sampling rate should be at least twice the bandwidth of the signal, in order to fully reconstruct the signal.. PCM is a method of converting an analog signal into a digital signal. (A/D conversion). The amplitude of Analog signal can take any value over a continuous range i.e. it can take on an infinite values.. Wayne Maxwell. Martin Cacan. Christopher . Haile. Presentation Roadmap. Introduction and Background. Applicable Definitions. Pulse Width Modulation. Duty Cycle. Advantages/Disadvantages. PWM Types. Methods of PWM Generation. Analogue to Digital Conversion. Quantizing. Encoding. Pulse Code Modulation. DEFINITION: . Pulse code modulation (PCM) is essentially analog-to-digital conversion of a special type where the . information . Department : ECE. Engineered for Tomorrow. Subject Name: . Digital Communication. Subject . Code:10EC61. Prepared By:Pallavi, . Lakshmi. C R. Department: ECE. Date:1/3/15. Unit . 2:Waveform Coding Techniques. Audio/video signals are . analog. in nature. Analog signals can take . infinite. number of values. Hence more difficult to detect at receiver after noise corruption. PCM converts analog signals to digital pulses. . ). Data Transmission And Digital Communication. Lecture 5– 2019/1440. By: Elham Sunbu. OUTLINE. Sampling.. Pulse Amplitude Modulation .. Analogue to Digital conversion.. Sampling (PCM).. Pulse Code Modulation Advantages.. EE305 Power Electronics. Voltage control in inverters-Types. Internal Control of the Inverter (PWM for voltage and harmonic control. External control of the AC output voltage. External control of the DC input voltage. Prof. Brian L. Evans. Dept. of Electrical and Computer Engineering. The University of Texas at Austin. 15 - . 2. Introduction. Digital Pulse Amplitude Modulation (PAM). Modulates digital information (symbols) onto amplitude of pulse.