Educational Materials

LSB Audio seeks to serve our clients, provide products to those in need, and to educate all those in-between. 

Our firm and our independent experts have a variety of experience with which to share with our industry.  We will update the list of topics below as we are able.  This page is constantly under construction.  The topics with a hyperlink currently have content; topics without hyperlinks are currently planned for contribution.  We will work toward a good breadth and depth of digital audio education and hope you enjoy what we have to share.  

Note: All Educational Materials are © LSB Audio, 2008-2010 unless otherwise noted. 

 

Educational Topics

Elementary DSP

• Sampling and Quantization
• Types of Digital Systems (linearity, time variance, causality, etc.)
• What is a z transform?
• What is the unit circle?
• What is a circular buffer?

Physiology of the Auditory System

• Basic Anatomy of Hearing (example from our sister site www.perceptualentropy.com by Jon)

DSP Filter Design

• Introduction to Digital Filtering
• Principles behind FIR filtering
• Principles behind IIR filtering
• Filter Design for Communications

Dynamics Processing

• Compressors, expanders, companders, and limiters
• What is a time constant?
• How automatic gain control (AGC) works

Digital Audio Effects

• Reverberation
• Phasers
• Flangers
• Chorusing
• Phase Vocoder

Digital Signal Analysis

• Discrete Fourier Transform
• Discrete Cosine Transform
• Modified Discrete Cosine Transform

Psychoacoustics

• Some Basics of Psychoacoustics (example from our sister site www.perceptualentropy.com by Jon)
• Comparison of Cochlear Filter Banks

Audio Coding

• Principles of audio coding
• Types of audio coders
• Frequency vs. time resolution
• MPEG Model 2 Matlab Code (example from our sister site www.perceptualentropy.com by Jon)
• An example Perceptual Audio Codec (example from our sister site www.perceptualentropy.com by Jon)
• A Tutorial on Masking

Multi-rate Digital Processing

• Sample rate conversion
• What is critical sampling?
• Efficient sample rate conversion
• Simple Multi-band Compressor Example

Filter Banks

• What is Perfect Reconstruction?
• Tree Structured Filter Banks
• Octave Spaced Filter Banks

Auditory Neuroscience
Spatialization
Adaptive Filtering

• What is adaptive filtering?
• The Least Mean Square Algorithm
• Recursive Least Squares
• Levinson Durbin Algorithm

Algorithms that Use Adaptive Filtering

• Noise Cancellation
• Echo Cancellation

Speech Processing

• Glottal Models
• Analysis of English Phonemes
• Simple Synthesis of Phonemes
• Simple Speech Analysis - Dynamic Time Warping

Auditory Component Analysis
Advanced Quantization Methods

• Differential Quantization
• Adaptive Quantization
• Adaptive Differential Quantization

Digital Noise Shaping
Audio Synthesis

• The Karplus-Strong Guitar String Model
• Digital Tone Generation

General Topics

LSB Audio, LLC © 2008-2010   Privacy policy