cos(π fT ) cos(π fT ) ⎟ G( f ) = − ⋅ exp(− jπ fT ) ⎜ 1 ⎟ 2π ⎜ f − 1 ⎟ f+ ⎝ 2T 2T ⎠ fc = 1 2T Copyright © 2009 John Wiley & Sons‚ Inc. All Rights Reserved. (c)The half-sine pulse is identical to the half-cosine pulse except for the centre frequency and time-shift. fc = 1 2Ta ⎡ cos(π fTa ) cos(π fTa ) ⎤ − ⎢ ⎥ ⋅ (cos(π fTa ) − j sin(π fTa )) f + fc ⎦ ⎣ f − fc A ⎡ cos(2π fTa ) cos(2π fTa ) sin(2π fTa ) sin(2π fTa) ⎤ = − +j −j ⎢ ⎥ 4π ⎣ f − f c f + fc f − fc f + fc ⎦ A 2π A ⎡ exp(− j 2π fTa
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voltage of 12V has been amplitude modulated with a 5KHz sine wave. The stations broadcast frequency is 1MHz. Compute the following: a. The upper and lower sideband frequencies b. The peak carrier voltage Vc c. The percent modulation m d. The modulation voltage Vm e. The upper and lower sideband voltages Q.4 A spectrum analyzer is used to verify an FM signal with a carrier frequency of 106.5 MHz‚ a modulation frequency of 7.5KHz and a modulation index of 3.0. a. Determine the number of significant sideband
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Introduction An experiment was done to determine the allele frequencies for a gene in a model population and to describe the affect of natural selection on this population. The Hardy-Weinburg theorem states that the gene pool of a non-evolving population remains constant over generation but the natural effect of Hardy-Weinburg’s equilibrium by selecting the individuals who are most fit for the environment‚ and allowing them to reproduce more of the genotype that is allowing them to survive. The
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BY ;- ARSHID TO ;- KRISHAN SIR Product display contests: Package is an integral part of the product. Its main purpose is to protect the product during transit‚to preserve the quality and to avoid any loss in quality and quantity. The main purpose of thiscontest is to remind the customer to buy the product as soon as he enters the shop. Another objective is to influence the dealer to stock the product and support the company in increasing thesales. The display contest has to be announced well
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INDEX Executive summary 2 Introduction to the topic 3 As we are now in the era of booming retailing lot of organization are entering into the retail market. In India Future Group Pantaloon company is one of the greatest retailing companies with its retail format called Big Bazaar. In my summer training project I’m doing live project‚ on a “An Analysis of Customer Cherry Picking of FMCG Products at Big-Bazaar in Lucknow”. ( To improve customer walk-in at big bazaar) And also to know what are the
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4035‚ Communications IV Lecture Notes Prof. Derek Abbott Dr. Mark McDonnell‚ A/Prof. Bruce R. Davis School of Electrical and Electronic Engineering © The University of Adelaide. 4035 - Communications IV‚ Notes School of Electrical & Electronic Engineering School of Electrical & Electronic Engineering Lectures 4035 Communications IV Lectures: 18 Tutorials: 4 Lecturer: Prof. Derek Abbott‚ Rm N237 • Slides - These contain the salient points‚ but are not a complete coverage of topics
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Tutorial Sheet # 2 1. Sketch the time variation and frequency spectrum of an RF signal with 75 % Amplitude Modulation. Show several cycles of the modulated wave. Make the modulation frequency 1/10 of the carrier frequency. The unmodulated carrier has peak amplitude of 1.0V. In an amplitude modulation system‚ the message signal is given by Fig. and the carrier frequency is 1 KHz. The modulator output is SAM (t) = 2(b + 0.5m (t)) cos ωc t. 2. a. Determine the average message power. b. If b =
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by changing source and filter to produce a wider dynamic range. This enables to maintain a balance in loudness across phonemes and produce vocal timbers (Titze‚ 1989). It also allows shifts in formant frequencies and subtle adjustments in the timbre and vowel quality. This shift in formant frequencies/ articulatory adjustments leads to appearance of Singer’s formant (Fs). Singers formant is an exceptionally high spectrum envelope peak around 3 KHz in the vowel spectra of singers (Sundberg et al‚ 1995)
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Frequency Modulation Design of FM Broadcast Systems ECE 211L Broadcast Engineering Laboratory A system of modulation where the instantaneous frequency of the carrier and its rate of change varies in proportion to the instantaneous amplitude of the modulating signal. The FM Broadcast Band That portion of the radio frequency spectrum from 88 MHz to 108 MHz. The band is divided into 100 channels‚ starting at 88.1 MHz up to 107.9 MHz. Each channel is 200 kHz wide‚ designated by its carrier
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while at work? The responses are summarized in the following table: Response category Relative Frequency (expressed as percent) Prohibited completely 54% Permitted for business purposes only 19% Permitted for limited personal use 16% Permitted for any type of personal use 10% Don’t know/no answer 1% a. Explain how the survey response categories and corresponding relative frequencies were used or modified to produce the following table: b. Using the original data in the table‚ construct
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