Stick…………………………………..9 2.4 A/D conversion of Analog ECG signal to Digital ECG signal………………………………10 2.5 Heart Attack Detection…………………………………………………………………….....11 2.6 Emergency Calling…………………………………………………………………………...11 3. DESIGN DETAILS………………………………………………………………………….……12 1. Analog ECG Circuitry……………………………………………………………………….12 3.2 A/D Conversion and RS232 of PIC16F877…………………………………………………..12 3.3 Digital Data Transmission of HP-3 Transceiver……………………………………………...13
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pre-recorded template that stores each speaker’s distinctive features. We will use this template to do a mix and match with the speakers in our system. Speaker identification refers to the process of identifying an individual by extracting and processing information from his speech. This is a fascinating area of research. From speech itself‚ we can deduce quite accurately whether the speaker is male or female‚ adult or child. It is also possible to detect the emotional state‚ and attitude of
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This is because the polarity of the carrier will affect the flow of modulating signal through the diodes. The outputs are made up of two signals‚ one signal shifted up by carrier frequency signal and the other signal is shifted down by frequency carrier. Balanced ring modulators are widely use in musical instrument like guitar and radio receivers. Keywords— balanced ring modulator‚ modulating signal‚ carrier signal‚ output waveform‚ amplitude I. Introduction We as a group of telecommunication
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specifically‚ was programmed into a Basys FPGA in Verilog to produce the audio signal. In addition‚ several other Verilog modules were needed to complete the player: a 25 MHz to 44.1 kHz clock converter‚ address counter‚ and byte readers. Documented code for all the modules is provided. The techniques explored here are practical‚ efficient‚ and therefore‚ popular methods for audio sampling and listening as well as other digital to analog applications. II. THEORY & SETUP To first get a better understanding
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Circuits & Signals EEE/ INSTR C272 BITS Pilani Pilani Campus p ANU GUPTA EEE Time-domain analysis BITS Pilani Pilani Campus p Response of a LTIC system time-domain analysis linear‚ time-invariant‚ continuous-time (LTIC) systems--Total response = zero-input response + zero-state response zero-input response component that results only from the initial i t t th t lt l f th i iti l conditions at t = 0 with the input f(t) = 0 for t ≥ 0‚ zero-state zero state response component that
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MODULATION TECHNIQUES 1.4.1 FREQUENCY SHIFT KEYING (FSK) Frequency shift keying is a frequency modulation in which the digital information is transmitted by discrete changes in frequency of the carrier signal. This technology is used for the communication system such as caller ID and emergency broadcasts [19]. The binary FSK is the simplest FSK. BFSK uses a pair of discrete frequencies to transmit binary information. The 1 and 0 is mentioned as mark frequency and space frequency. The other forms
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In this analysis‚ the stator current signal transformed to the frequency domain using a FFT algorithm. The stator current signal of the motor is used to analyze and detect specific fault frequencies related to incipient faults. For stator winding fault‚ there is an associated fault frequency that may be identified in the spectrum. The stator fault has been detected by comparing the healthy power spectrum to faulty power spectrum. The power spectrum of stator current for healthy no-load condition
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School of Communications Technology and Mathematical Sciences Digital Signal Processing Part 3 Discrete-Time Signals & Systems Case Studies S R Taghizadeh <srt@unl.ac.uk> January 2000 Introduction Matlab and its applications in analysis of continuous-time signals and systems has been discussed in part 1 and 2 of this series of practical manuals. The purpose of part 3 is to discuss the way Matlab is used in analysis of discrete-time signals and systems. Each section provides a series of worked examples
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noise and distortion encountered when communicating over AC power wiring. Various technologies which have been used to address these challenges‚ such as spread spectrum and digital signal processing‚ are then examined in light of the known channel conditions. Introduction While the idea of sending communication signals on the same pair of wires as are used for power distribution is as old as the telegraph itself‚ the number of communication devices installed on dedicated wiring far exceeds the
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Filtered Speech Experiment Purpose The purpose of the filtered speech experiment was to look for three things. The first was to see/hear which frequencies can be eliminated from speech signal and conversely which frequencies can not in order to understand speech. The second purpose was to learn more about sound filters; and the third was to understand what it is like to experience hearing loss. Instrumentation The instruments we used during this experiment were: 1) Low pass filter of the
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