Using Pulse-Width Modulation and Audio Sampling Techniques to Construct an Audio Player with a Field-Programmable Gate Array John C. Greavu III University of Minnesota‚ School of Physics and Astronomy I. INTRODUCTION 8-bit and 16-bit audio players were built by employing pulse-width modulation (PWM) techniques with a field-programmable gate array (FPGA). Basic PWM and audio playing methods are explained in detail. A sigma-delta modulation module‚ specifically‚ was programmed into a Basys
Premium Frequency Digital signal processing Output
You must have often wondered about the thunderous sound coming from another car beside yours when stopped on a signal‚ must have made comparisons over your audio system. Well‚ the rumbling timbre of the sound is because of the car audio subwoofers. Now the right frequency of the audio system is very necessary and if the stereo lacks it then time and again you feel like throwing your stereo system away. A subwoofer is an extremely significant component of a stereo system. It is a kind of a loudspeaker
Premium
Journal of College Teaching & Learning – November 2011 Volume 8‚ Number 11 The Effects Of Using Collaborative Learning To Enhance Students‟ English Speaking Achievement Fasawang Pattanpichet‚ Bangkok University‚ Thailand 1 ABSTRACT This experimental study aims to investigate the effects of using collaborative learning to enhance students‟ speaking achievement. The study using a pre-test and post-test design was conducted with 35 undergraduate students enrolled in a fundamental English course
Premium Education Second language acquisition Language acquisition
The effects of Visual Distraction on Reaction Time Abstract Distraction has been associated with affecting human reaction time. These associations have been obtained from studies focusing on drivers in particular. Driver distraction is very common nowadays and it is associated with many car crashes (Governors Highway Safety Association‚ 2011). Distraction can take forms in visual‚ cognitive‚ auditory and manual handling of the vehicle. In this study the aim was to test the effects of visual
Premium Visual perception Visual system
The Effect of Visual Stimuli on Heart Rate HL Biology James Kosiol Focus Question What is the effect of a timed visual stimuli (45 seconds)‚ in the form of flashing coloured lights (White 0/s (control)‚ White and Black 1/s‚ Blue 2/s‚ Red 3/s‚ Green 4/s and Multicoloured 5/s) on the heart rate of the viewer? Table of Contents 1.Design 1.1 Defining the Problem Focus Question What is the effect of a timed visual stimuli (45 seconds)‚ in the form of flashing coloured
Premium Heart rate Standard deviation
many children of poor families have and how many see the curriculum as irrelevant to their lives. She suggests modifying the curriculum in interesting‚ simple ways that will have value to all students in the class. This may include doing work on the effect of poverty‚ getting involved in community projects such as soup kitchens or simply studying the question "What is poverty?" It is important that these activities be followed with both group discussion and individual reflection to help children think
Free Poverty Education Cycle of poverty
methodology‚ sampling‚ data analysis‚ discussion‚ ethics‚ implications for practice and conclusion. The researcher has reported findings from a qualitative study carried out on peer and neighbourhood influences on teenage pregnancy and fertility. Using face-to-face and semi structured interviews‚ 15 mothers under 21years of age and 9 coordinators took part in the study. The findings suggest that there is no evidence suggesting peer influence on the outcome of teenage pregnancies even though this
Premium Pregnancy Qualitative research Abortion
little different when played on different sound cards‚ there is no guarantee that those lush horns won’t sound like blaring trumpets on the next guy’s machine. Making universal MIDI files is a combination of art‚ skill‚ and experience. Digital Audio Digital audio files are
Premium Digital audio Piano
Audio Equalizer Research Audio Equalization Equalization‚ or EQ for short‚ means boosting or reducing (attenuating) the levels of different frequencies in a signal. The most basic type of equalization familiar to most people is the treble/bass control on home audio equipment. The treble control adjusts high frequencies‚ the bass control adjusts low frequencies. This is adequate for very rudimentary adjustments — it only provides two controls for the entire frequency spectrum‚ so each control
Premium
Index 1.1 Full explanation of Audio lingual method 1 1.2 Characteristics 1 1.3 Four parts of the method 2 1.4 Present day use 2 1.5 Advantage 3 1.6 Disadvantages 3 2. Language acquisition 3 3 Lesson 4 3.1.. Explination of the different techniques 4 3.1.1. Chain drill 4 3.1.2 Use of minimal pairs 4 3.1.3 Completion 4 3.1.4 Repetition drill 4 3.1.5 Substitution drill: 4 3.1.6 Question and answer drill 4 3.1.7 Backward
Premium Language education