Sensor Circuits and Switching for Stringed Instruments

Preface\nAcknowledgments\nContents\nChapter 1: Introduction and Short Previews of Coming Chapters\n	1.1 Some General Comments on Prior Art\n	1.2 Methods of Creating Pickup Circuits\n		1.2.1 Method 1 (Chap. 2)\n		1.2.2 Method 2 (Chap. 3)\n			1.2.2.1 An Experiment with 2 Humbuckers\n		1.2.3 Method 3 (Chap. 4)\n		1.2.4 Method 4 (Chap. 7)\n		1.2.5 Method 5 (Chap. 8)\n		1.2.6 Method 6 (Chap. 11)\n	1.3 There Are Several Good Reasons for Writing This Book\n	References\nChapter 2: Series-Parallel Circuit Topologies of Single Sensors\n	2.1 Some Prior Art\n	2.2 Why Did They Fail in the Marketplace?\n	2.3 The Point of the Exercise\n	2.4 Glossary of Necessary Terms\n	2.5 Basic Topologies and Phase\n	2.6 K Sensors Taken J at a Time\n	2.7 Constructing Series-Parallel Circuits\n	2.8 Collecting Results\n	References\n	Patents\n	Patent Applications\nChapter 3: Series-Parallel Circuit Topologies of Humbucking Pickups\n	3.1 Some Prior Art\n	3.2 Adapting Single-Coil Circuits to Dual-Coil Humbuckers\n	3.3 A Dual-Humbucker Experiment\n		3.3.1 Basic Measurements of the Pickups\n		3.3.2 The 24-Way Switching Circuit\n		3.3.3 Practical Results\n	References\nChapter 4: Series-Parallel Circuit Topologies of Matched Single-Coil Pickups\n	4.1 Some History\n	4.2 Humbucking Pairs, Quads, Hextets, and Octets\n		4.2.1 Humbucking Pairs\n		4.2.2 Humbucking Quads\n			4.2.2.1 HB Quad Circuit Equations\n			4.2.2.2 Allowable HB Quad Pickup Terminal Reversals in Type (4) Topologies\n			4.2.2.3 HB Quad Type (2 + 2) Topology Signals\n			4.2.2.4 HB Quad Loaded Tones\n			4.2.2.5 HB Quad No-Load Tone Circuits\n		4.2.3 Humbucking Hextets\n		4.2.4 Humbucking Octets\n		4.2.5 Compilation of Results\n	References\nChapter 5: The Limits of Mechanical Switches\n	5.1 Some History\n	5.2 Concatenating Switches\n	5.3 General Characteristics of Rotary Switches\n	References\nChapter 6: An Efficient uC-controlled Cross-Point Pickup Switching System\n	6.1 Some Prior Art\n		6.1.1 An Efficient uC-Controlled Cross-Point Pickup Switching System\n	References\nChapter 7: The Tonal Advantages of Pickups with Reversible Magnets\n	7.1 Introduction and Some Prior Art\n	7.2 Development of Humbucking Expressions\n		7.2.1 Rules for Humbucking Expressions\n		7.2.2 Combinations of Pickups for Each Humbucking Expression\n		7.2.3 Summary of Pickup Combinations for Humbucking Expressions (Table 7.7)\n	7.3 Making Guitars with Multiple Tonal Characteristics\n		7.3.1 Number of Pole Configurations\n		7.3.2 Signal Phases for Humbucking Pairs with Reversible Magnets\n		7.3.3 Signal and Output Combinations for K = 3 Pickups with Reversible Magnets\n		7.3.4 Signal and Output Combinations for K = 4 Pickups with Reversible Magnets\n		7.3.5 Method for Voc  h1X1 ± h2X2 ±  ± hJXJ\n		7.3.6 Signal Combinations for K = 5 Pickups with Reversible Magnets\n		7.3.7 Signal Combinations for K = 6 Pickups with Reversible Magnets\n		7.3.8 Summary of Tonal Circuit Combinations of Matched Pickups with Reversible Magnets (Table 7.13)\n		7.3.9 Comments on Future Work Needed\n	7.4 Embodiments of Pickups with Reversible Magnets\n		7.4.1 Vertical Magnetic Field Pickup Embodiment\n		7.4.2 Horizontal Magnetic Field Pickup Embodiment\n		7.4.3 Comments on Prototype Development\n	References\nChapter 8: Common Connection Point Humbucking Circuits with Odd and Even Numbers of Matched Single-Coil Pickups\n	8.1 Some Prior Art and Words About Hum\n	8.2 Simplified Series-Parallel Circuits\n		8.2.1 Common-Connection Circuits with Two Coils\n		8.2.2 Common-Connection Circuits with Three Coils\n			8.2.2.1 Common Connection Point Circuits for K = 3 Matched Pickups with Reversible Magnets\n		8.2.3 Common-Connection Circuits with Four Coils\n			8.2.3.1 Common Connection Point Circuits for K = 4 Matched Pickups with Reversible Magnets\n		8.2.4 Circuits with Five Coils\n			8.2.4.1 Common Connection Point Circuits for K = 5 Matched Pickups with Reversible Magnets\n		8.2.5 Circuits with Six Coils\n			8.2.5.1 Common Connection Point Circuits for K = 6 Matched Pickups with Reversible Magnets\n		8.2.6 Summary of Results\n	References\nChapter 9: A Common-Point Connection Experiment with Two Mini-Humbuckers\n	9.1 An Experiment with Two Mini-Humbuckers\n	9.2 Humbucker Magnitude Spectra\n	9.3 A Method of Choosing the Spacing and Switching Order of Tones\n		9.3.1 Example 1: Choosing 6 Tones from Table 8.10 Using Mean Frequency for a 6P6T Switch\n		9.3.2 Example 2: Choosing 6 Tones from Table 9.6 Using Weighted Moments\n		9.3.3 Example 3: Steps of 1/2 Fret or More from Table 9.3 Using Mean Frequency\n		9.3.4 Example 4: Steps of 1/2 Fret or More from Table 9.6 Using Weighted Moments\n	References\nChapter 10: Switching Systems for Common-Point Connection Pickup Circuits\n	10.1 Mechanical Switching Systems for Common-Point Connection Circuits\n		10.1.1 Embodiment 1: 3 Matched Pickups with a 4P6T Switch\n		10.1.2 Embodiment 2: 3 Matched Pickups with a Single-Ended Preamp and Signal Volume Compensation\n		10.1.3 Embodiment 3: 3 Matched Pickups with a Differential Preamp and Signal Volume Compensation\n		10.1.4 Embodiment 4: 4 Matched Pickups with a 4P6T Switch\n		10.1.5 Embodiment 5: 4 Matched Pickups, or 2 Matched Humbuckers, with a 6P6T Switch and Differential Preamp\n	10.2 Digital Switching Systems for Common-Point Connection Circuits\n		10.2.1 Embodiment 6: J N-up and K S-up Coils w/ Digital Control of SMD Analog Switches\n		10.2.2 Embodiment 7: Digital Switching Without a Micro-Controller\n	References\nChapter 11: Humbucking Basis Vectors: Tones Without Switching\n	11.1 Some Prior Art\n	11.2 The Circuits Created by the Math\n	11.3 And Now the Vector Math\n	11.4 The Properties of SUV-Space\n	11.5 Analog Methods: Extending the Sin-Cosine Pot Approach to J > 3 Matched Pickups\n	11.6 Analog Methods: Replacing a Sine/Cosine-Ganged Pot with a 3-Gang Linear Pot\n	11.7 Digital Methods: Approximating Sine/Cosine Pots with Linear Digital Pots\n	11.8 Digital Methods: Approximating Sine/Cosine with 5 Basic Functions\n	11.9 Constructing Full-Space Tables of Moments and Relative Amplitudes from a Few FFTs\n	11.10 Micro-controller Architecture for Humbucking Basis Vectors\n	References\nReferences\n	Books\n	Patents\n	Patent Applications\n	Software\n	Standards\nIndex