Design of an audio multitone refiner, simulation of audio frequencies & analysis using active filter / Blessed Olalekan Oyebola.

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Includes bibliographical references.

Design of an Audio Multitone Refiner, Simulation of Audio Frequencies & Analysis Using Active Filter -- CONTENTS -- ABSTRACT -- FOREWORD -- CHAPTER ONE 1. INTRODUCTION -- 1.1 What Is Filter? -- 1.2 Fundamentals of Filters (Low-Pass) -- 1.3 Superiority of Active Filters over Passive Filters -- 1.4 Basic Op-Amp and Feedback Theory -- 1.5 Overview: Block Diagramm -- 1.6 Terms Definition -- CHAPTER TWO 2. LITERATURE REVIEW -- 2.1 Transfer Functions -- 2.2 Butterworth Low Pass Filters -- 2.3 Tschebyscheff Low Pass Filters -- 2.4 Bessel Low Pass Filters -- 2.5 Quality Factor Q -- 2.6 Précis -- 2.7 Low Pass Filter Design -- 2.8 First Order Low Pass Filter -- 2.9 Sallen-key Topology -- 2.10 Multiple Feedback Topologies -- 2.11 Higher Order Low-pass Filters -- 2.11.1 Second Order Filter -- 2.11.2 Third Order Filter -- 2.12 High Pass Filter Design -- 2.13 Multiple Feedback Topologies -- 2.14 Band-Pass Filter Design -- 2.14.1 Second Order Band Pass Filter -- 2.14.2 Sallen Key Topology -- 2.14.3 Multiple Feedback Topology -- 2.15 Tone Control (BaxandalI) Circuit -- CHAPTER THREE 3. DESIGN -- 3.1 Filter Architecture -- 3.2 Op-Amp Selections and Blue Print -- 3.3 Overall Designed Circuit Diagram -- 3.4 Cross over Design -- CHAPTER FOUR 4. ANALYSIS AND DISCUSSION -- 4.1 Signal Coupling and Pre-Amplifier -- 4.2 Multiple Feedback (MFB) Band-Pass Circuit -- 4.3 The Band Pass Design Calculated Values -- 4.4 Output Section and Components Selection -- 4.4.1 Capacitor Selection -- 4.4.2 Component Valves -- 4.5 Peak Limiter/ Attenuator -- CHAPTER FIVE 5. Results and Conclusion -- 5.1 Filter Shapes, Responses and Combining Action -- 5.2 Noise Analysis -- REFERENCES AND BIBLIOGRAPHY.

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