Chapter 3 : Digital Audio - Posted on 2016-07-28 by Austin Mullen

Summation Of What I Learned :

How It Works : 

• Digital Audio is number based and employs many complicated formulas that use advanced algebra, calculus, and theory.

Sampling And Quantizing A Sound Wave : 

• Digital audio works by taking many discrete, instantaneous samples of the sound waves amplitude, store that information, and later reproduce those amplitudes at the same rate to create the illusion of a continuous wave.
• The job of a microphone is to transduce ( convert one form of energy to another ) the variations in air pressure into an analogous change in electrical voltage. 
• Voltage can be sampled through a process called sample and hold. 
• PCM stands for pulse code modulation
• The sample rate is the number of samples taken per second. 
• The Bit Depth is the number of bits used to define the amplitude of each sample that determines the resolution with which we can measure the signal.
• DSD stands for direct stream digital.
• Clipping is the cutting off of amplitude due to the lack of space with in range, inother words beyond the maximim amplitude.

In the third session with my mentor i learned the severe importance of binary code and the quantization of an audio signal. this session was very informative.