C) DIFFERENCE AMPLIFIER The difference amplifier with LM3 amplifies the difference between two voltages making this type of operational amplifier circuit , a subtractor. The phase shifted output is fed to both difference amplifier and phase shifter. The phase shifter cancels the echo in the signal.The difference amplifier subtracts the input signal with echo and echo cancelled output of phase shifter. The output of difference amplifier is signal with 80% of echo being removed. D) SOUND PROCESSOR UPC 1892 It is a specific IC to reproduce surround sound by using phase shifters and a signal matrix.
• Crest Factor: The ratio of peak to RMS value is known as crest factor. CF= x_max/x_rms Vibration measurement To be able to measure vibration of a machine, it is necessary to have some measuring instruments. In practice, various tools are used, from simple instruments measuring overall vibration to multichannel analyzers equipped with numerous features which facilitate not only the measurement itself but also help in the analysis of the measured data. Analyzer Basic scheme of the analyzer used for vibration measurements is shown in fig. The analogue signal from the vibration sensor passes through the input amplifier, anti-aliasing filter and A/D converter, where it is digitized and enters the data buffer.
1. How does your redesign data compare to your original data? Include data/evidence in your response. ___________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________ 2. Looking back at your final design, what factors influenced the sound waves absorption, reflection and transmission?
With the help of this method, it is possible to get information about the type of reactions observed in the system like thermodynamics of redox processes, kinetics of heterogeneous electron-transfer reactions, and on coupled chemical reactions or adsorption processes. Cyclic voltammetry is often the first experiment performed in an electroanalytical study. In particular, it offers a rapid location of redox potentials of the electro active species, and convenient evaluation of the effect of media upon the redox process [1-2]. Cyclic voltammetry is an technique where the potential applied at the working electrode is swept between two chosen potential limits and the change in current is monitored. This is done at a constant rate known as the scan rate.
The objective of this lab is to gain an understanding of the functions and characteristics of a Moore model 65 Square Root Extractor such as the principles of operation, calibration of the instrument, and its use in industry. Principles of Operation: For this lab I worked with a Moore model 65 Square Root Extractor. The extractor works by taking in the pneumatic signals of differential flow transmitters and providing a linear output so the signals can be added, subtracted, averaged, or when the signals need to be linear to provide a proper representation for a control loop. The Extractor uses the cosine function of a small angle to give square root conversion. The angle is created by a continuous balance between the motion of the input pressure
Low Bandwidth USB data Logger By KHOO JENG HENG PROJECT 1 A PROPOSAL SUBMITTED TO Universiti Tunku Abdul Rahman In partial fulfillment of the requirements For the degree of BACHELOR OF INFORMATION TECHNLOGY (HONS) COMPUTER ENGINEERING Faculty of Information and Communication Technology (Perak Campus) ABSTRACTS Oscilloscope is electronic test instrument that we can use to observe the different of signal voltages, change of an electrical signal over time like time and voltage to describe a shape which is continuously graphed against a calibrated scale. By using this tool we able to analyze the waveform for such as amplitude, frequency, rising time, time interval, distortion and others. In this project we are going to use PIC32MX450F256L (Microchip Technology) board to work as oscilloscope and help us to convert the analog signals to digital signals and the waveform will be collect and analyze on the computer display the desired waveform on the screen for us to observe. Table of Contents Chapter 1: Introduction 1 1.1 Project Background 1 1.2 Problem Statement 2 1.3 Project Scope & Objectives 2 1.3.1 Project Objective 2 1.3.2 Project Scope 3 1.4 Innovation / Contribution 4 1.5 Methods / Technology Involved 4 Chapter 2
ABSTRACT: Reverse engineering, also called back engineering, is the processes of extracting knowledge or design information from a product and reproducing it or reproducing anything based on the extracted information. The process often involves disassembling something (a mechanical device, electronic component, computer program, or biological, chemical, or organic matter) and analyzing its components and workings in detail. In addition, we can also benefit from the reverse engineering by knowing what is needed to be improved so it can have more advanced features. INTRODUCTION: Reverse engineering is a technique used to identify the components of a device, so we can know the function of each component and how we can improve each of the
These models may be used to design systems for speech recognition. From speech recognition, a computer can be used to predict the speech of a user. This is done by predicting the future values of a waveform using current and previous samples. This is used mainly in speech coders where the signal-to-qauntization noise associated with the quantizer can be increased by quantizing the prediction error. The figure below illustrates the block diagram of a speech coder using differential pulse code