MUMT 203 - Introduction to Digital Audio: Schedule

• Continuous-time & discrete-time signals
• Analog and quantized signals
• Period and non-period signals
• Functions and transformations
• Intro to sampling
• System properties

Roads: pp. 7-24 McClellan: pp. 1-8

Class #1 slides, intro to signals and systems

• Functions
• Convolution
• Trigonometry
• Logarithms
• Complex Numbers
• Periodic Motion and Psychoacoustics
• Number Systems
• Time Domain vs. Frequency Domain Representations

McClellan: pp. 9-10, 12-20, 23-37, 41-42;
Ballora: pp. 1-8, 13-14, 17-21,24-29, 37-43, 48-52, 139-142

Class #2 slides

• Sampling Theorem and aliasing
• Analog-to-digital conversion
• Quantization error and dither

Class #3 slides

Hand out quiz #1, due week 5
Hand out assignment #1, due week 8

Ballora: pp. 100-113; Roads: pp. 29-47;
Pohlmann: pp. 21-43; McClellan:pp. 83-111

• Lowpass Filtering to Prevent Aliasing
• S/H Circuits
• Jitter
• ADCs
• Oversampling

Class #4, lecture slides

Ballora: pp. 114-122, 131-136, 146-148;
Pohlmann: pp.53-66, 81-84, 86-88, 89-104, 117-118;
Watkinson: pp. 196-204, 207-215, 252-258

• Filters
• Oversampling
• Noise Shaping
• DACs
• Output S/Hold Circuits
• Output Lowpass Filter

Class #5, Lecture slides

Quiz #1 due

Roads: pp. 1021-1023, 1028-1034;
Pohlman: pp. 67-78, 129-153;
Watkinson: pp. 466-469

• Encoding Signals
  • PWM, PPM, PAM, PNM, PCM
  • Floating Point Systems
  • Block-Floating Point Systems
  • Non-Uniform Companding Systems
  • Delta Modulation
  • Adaptive Delta Modulation
  • Adaptive Differential PCM
• File Formats: Sampling Rates & Bit Depths Slides
  • Headers
  • Overview of Different Formats
  • Huffman Coding
  • Perceptual Coding

Pohlmann: pp. 49-52, 104-116, 403-405, 489-493;
Watkinson: pp. 275-283;
Ballora: pp. 148-152, 166-168

• Synchronization
• Channel Codes
• Types of protocols
• Error Detection & Correction: Brief Overview

Slides

Mid-term exam

Roads: 1021-1023, 1028-1034;
Pohlman: pp. 67-78, 129-153;
Watkinson: pp. 466-469

• Synthesis Historical Aspects Synthesis Basic Techniques:
  • Unit Generators
  • Envelopes
  • Fixed Table Lookup
  • Interpolating Oscillators
• Time-varying Waveform Synthesis Sampling Synthesis:
  • Looping
  • Pitch-shifting
  • Sample rate conversion
  • Data Reduction

Assignment #1 due
Hand out assignment #2 Slides

Dodge : pp. 72-87, 323-329;
Roads : pp. 87-105, 117-133

• Amplitude and Ring Modulation
  • Tremolo
  • Sidebands
  • Modulation Index
  • Negative Frequencies
• Frequency/Phase Modulation
  • Vibrato
  • Frequency Deviation
  • Modulation Index
  • Sidebands
  • Bandwidth

Slides

Hand out quiz #2

Dodge : pp.46-58, 87-90, 169-194;
Roads : pp. 134-150, 184-199

• Subtractive Synthesis:
  • Filter Combinations
  • Noise Generators
  • Pulse Generators
  • Channel Vocoders
• Analysis-based Subtractive Synthesis Additive Synthesis
  • Harmonics and Timbre
  • Fixed-form
  • Time-varying
  • Phase Considerations
  • Analysis-based Additive Synthesis

Slides

Dodge : pp. 90-95, 115-127;
Roads : pp. 215-235

• WaveShaping Synthesis:
  • Transfer Functions
  • Distortion Index
• Spectrum Computations Physical Modeling Synthesis:
  • Mechanical Models
  • Modal Synthesis
  • Waveguides

Slides

Quiz #2 due the following Monday, March 24.

Quiz 2 solutions

Dodge : pp.139-150, 277-281, 283-287;
Roads : pp. 252-262, 265-275, 279-285, 288

• Digital Audio Effects
  • Delays
  • Equalizers
  • Compressors/Limiters
  • Expanders/Noise Gates
  • Phasers
  • Flangers
• Chorus Digital Reverberation
  • Schroder Algorithm
  • Room Impulse Response
  • Convolution

Slides

Dodge : pp. 289-308;
Roads : pp. 390-397, 432-440

Final exam

Project presentations / write-up due (Assignment #2)

Dodge : pp. 289-308;
Roads : pp. 390-397, 432-440