book

Digital Electronics for Musicians

Name: Digital Electronics for Musicians
Author: Alexandros Drymonitis
ISBN: 9781484215838

by Alexandros Drymonitis

December 2015

Intermediate to advanced

516 pages

15h 29m

English

Apress

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Cover
Title
Copyright
Contents at a Glance
Contents
About the Author
About the Technical Reviewer
Acknowledgments
Introduction
Chapter 1: Introduction to Pure Data
Pd Basics: How It WorksOur First PatchThe Control DomainExecution OrderBang!CommentsGetting HelpGUIsPd Patches Behave Like Text FilesMaking Oscillators in PdMaking a Triangle Wave OscillatorMaking a Sawtooth OscillatorMaking a Square Wave OscillatorUsing Tables in PdSubpatches and AbstractionsControl Domain vs. Signal DomainAudio Input in PdBasic Electronic Music TechniquesAdditive SynthesisRing ModulationAmplitude ModulationFrequency ModulationEnvelopesDelay Lines in PdReverbFiltersMaking Wireless ConnectionsAudio and MIDI SettingsAdditional ThoughtsConclusion

Chapter 2: Introduction to Arduino
Arduino Jump StartParts ListThe Blink SketchDigital InputDefining Variables in ArduinoFurther Explanation of the CodeClasses in Arduino and the Serial CommunicationFurther ExplanationBuilding Circuits on a BreadboardPull-up vs. Pull-down ResistorsBoth Digital Input and OutputAnalog InputAnalog Input and OutputReading More Than One Pin, Arrays, and the for LoopExplaining the for LoopUsing Arrays in ArduinoAnalog and Digital InputCommunicating with PdSending Data from Pd to ArduinoConclusion
Chapter 3: Embedded Computers and Going Wireless
Before You BeginParts ListWhy Use Embedded Computers?Which Embedded Computer?Getting Started with the PiGetting Your Computer’s IPLogging in the Pi from OS X and LinuxLogging in from WindowsConfigure the PiNavigating Through the Linux systemEditing Text Files in LinuxInstalling SoftwareInstalling PdLaunching PdSetting up External Libraries in PdInstalling ArduinoLet’s Talk About VersionsExchanging Files Between Your Computer and the PiTransfer Files from OS X and Linux to the Pi, and Vice VersaTransfer Files from Windows to the Pi and Vice VersaChanging the IP of the PiSetting a Static IP on LinuxSetting a Static IP on OS XSetting a Static IP on WindowsLog in to the Pi Without a RouterShutting Down the PiGoing WirelessBluetooth vs. XBeeUsing a Bluetooth Module with ArduinoUsing the XBee with ArduinoConclusion
Chapter 4: Getting Started with Musical Applications
Parts ListPhase Modulation InterfaceHow Phase Modulation WorksMaking the Pd PatchArduino Code for Phase Modulation PatchCircuit for Arduino CodeA Simple Drum Machine InterfaceBuilding the Pd PatchArduino Code for Drum Machine PatchDrum Machine and Phase Modulation CombinationArduino CodeArduino CircuitPd Patch for Drum Machine-Phase Modulation InterfaceConclusion
Chapter 5: A Simple Synthesizer Using a MIDI Keyboard and Arduino
Parts ListWhat Is MIDI?Pd and MIDIHow [notein] WorksUsing a Different Tuning and an Amplitude Envelope with [notein]Polyphony with MIDI in PdMIDI Control Messages in PdPitch Bend Messages in PdProgram Change MIDI Messages in PdArduino CodeExplaining the CodePd PatchThe arduino_stuff SubpatchThe create_envelope and generic_data SubpatchesThe [poly_synth~] AbstractionThe [pd $0-voice_creation_loop] subpatchHow Dollar Signs Work in PdThe [synth_voice~] AbstractionThe filter~ SubpatchDone with Patching, Time to TestArduino Receiving MIDI Messages from the MIDI KeyboardArduino Circuit AdditionsArduino Code AdditionsPd Patch Receiving MIDI Data from ArduinoRunning the Pd patch on Raspberry PiLaunching Pd on Boot with the Raspbian Jessie ImageLaunching Pd on Boot with the Raspbian Wheezy Image or with Another Embedded Computer Running Debian JessieShutting Down the Pi (or Any Embedded Computer) While Running HeadlessA Small Caveat for the Raspbian and Debian Wheezy ImagesUsing an External Sound Card with the PiEditing the Pd Patch When Pd is Running on BootEnclosing the Pi in the KeyboardChoosing the Perforated BoardReducing the Wires of Your Circuit BoardChoosing the Right Power Supply and Getting Access to the Power PinsAccessing the MIDI PinsBringing the Power Input and Audio Output out of the EnclosureConclusion
Chapter 6: An Interactive Bow
Parts ListWriting Custom FunctionsA Function of the Data Type voidActual Code for the ProjectThe Test Circuit of the AccelerometerThe Test Pd PatchBuilding the Pd PatchHow to Use the Graph-On-Parent FeatureSetting the Properties of the GOP GUIsWhat We Have Achieved So Far in this Project’s Pd PatchUsing the Canvas to Create Visual FeedbackBuilding the Audio Processing Part of the PatchThe Finished PatchAdditions to the Arduino SketchFinalizing the CircuitUsing Bluetooth and a Voltage Divider Instead of the XBeeConclusion
Chapter 7: An Interactive Drum Set
Parts ListOther Things We’ll NeedFirst Approach to Detecting Drum HitsFirst Version of the CircuitRead the Drum Hits in PdGetting the Maximum Value in ArduinoGetting the Maximum Value in PdHaving Some Fun Before We FinalizeWorking Further with the Circuit and Arduino CodeAdding Switches and LEDs to the Circuit and CodeBuilding the Final Pd PatchBuilding the Audio File AbstractionBuilding the Abstraction to Receive Input from the ArduinoSending the Threshold and Debounce Values to the ArduinoThe Main PatchFinalizing the Arduino CodeMaking the Circuit EnclosureConclusion
Chapter 8: A DIY Theremin
Parts ListUsing a Proximity Sensor with the ArduinoRefreshing Our Memory on Serial.writeProximity Sensor CircuitPd Patch That Reads the Proximity Sensor DataSmoothing out the Sensor ValuesUsing Two Proximity Sensors and Four PotentiometersThe Arduino CodeThe CircuitThe Pd PatchBuilding the Oscillators for the ThereminCreating Band-Limited WaveformsReading the Stored Band-Limited WaveformsFinalizing the InterfaceAdding Push Buttons to the Arduino Code to Control the Waveforms of the OscillatorsMaking the CircuitPutting It All TogetherEnclosing the Project with an Embedded ComputerAdding a Push Button for Switching off the Embedded ComputerReading the Extra Push Button in PdWriting the Script to Shut the Embedded Computer DownLoading the Pd Patch on BootConclusion
Chapter 9: Making a Looper
Parts ListWhat Is a Looper?Recording Our First Sounds in PdPlaying Back the Recorded SoundChanging the Direction of the PlaybackMaking Recordings of Arbitrary LengthsRetrieving the Length of the RecordingOverdubbingGetting Rid of ClippingGetting the Start Position of the OverdubbingKnowing When to Stop OverdubbingSynchronizing End of Recording with Beginning of PlaybackStart Building the InterfaceWriting the Arduino CodeBuilding the Circuit on a BreadboardWorking Further on the Pd PatchThe Recording ModuleThe Phase ModuleThe Playback ModuleThe Overdub ModuleThe Overdub Position ModuleThe Arduino ModuleThe Table Copying ModulePutting It All TogetherMaking Some Final ImprovementsModifying the Arduino CodeModifying the Pd PatchEnclosing the Circuit in a BoxConclusion
Chapter 10: A Patch-Bay Matrix Synthesizer
Parts ListWhat We Want to Achieve in this ChapterExtending the Arduino Analog PinsHow a Multiplexer WorksWriting Code to Control a MultiplexerWiring 16 Potentiometers to the MultiplexerReading the 16 Potentiometers in PdExtending the Arduino Digital PinsUsing the Input Shift RegisterUsing the Output Shift RegisterCombining the Input and Output Shift RegistersMaking a Patch-Bay MatrixImplementing a Patch-Bay Matrix with the ArduinoMaking the Pd Patch That Reads the ConnectionsMaking the Patch-Bay Matrix CircuitStart Building the Audio Part of the Pd PatchA Signal Matrix in PdBuilding the Modules for the SynthesizerThe Final PatchThe arduino_stuff SubpatchThe Final Arduino CodeUsing Binary Numbers for MaskingThe check_connections FunctionThe Main loop FunctionControlling the LEDs with the Switches of the Shift RegistersThe Final CircuitMaking an EnclosureShutting down the Embedded ComputerConclusion
Index

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Digital Electronics for Musicians

by Alexandros Drymonitis

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