Digital Audio & Signal Processing (Elad Gariany)

Digital Audio &Signal Processing

By Elad Gariany

Who Am I?

Impulse Tracker

Logic Pro

The Vidit Family

Short Demo

Our Technology

Our Vision

Sound

Sound!

Sound

Sound

Real World Sound

Real World Sound

Representing Sound Digitally

Sample Rate & Bit Rate

Waveform

Single Example (Deep Dive)

So… What’s the Problem*

*In a nutshell

Clipping

Nyquist frequency

Sample Rate Limits

Headroom

0-256

0-65,536

0-16,777,216

Volume scale!

World Standards

• PCM: Wave File (8-32Bit / 8000 – 192Khz)

• CD: Audio Disk (16bit / 44.1Khz)

• Pro Audio: (24bit / 192Khz)

Understanding Sound!

Harmonics

Pure Tone

Fundamental Freq. - Tone

Grapher Example

sound sum(1/k*sin(440*k*x),k=1,30)

sound sum(1/(2k-1)*sin(440*(2k-1)*x),k=1,30)

sound sum(1/(2k-1)*(sin(440*(2k-1)*x)+sin(2200*(2k-1)*x)),k=1,30)

sound sin(3*261.63*x) + sin(3*329.63*x) + sin (3*392.00*x)

Signal Processing*!*Finally!

Amp. VS Freq. (Round 2)

DelayReverbChorus

Saturator

CompressorLimiter

ExpenderGate

Dynamic Range

The Loudness War

Vidit Wants You!

• Android Rockstar/Diva

• Video Engineer

• Scale / Backend Expert

Elad GarianyCo-Founder of Viditelad@vidit.fmhttp://www.vidit.fm

THANK YOU!