In this video, we'll explore the concept of binary representation of states as bit, and how bit depth applies to representing audio amplitude levels. We'll examine the real world affects and artifacts of low resolution audio file and hear the effects of quantization noise or error. We'll look at signal to quantization noise ratio (SQNR) as a metric for measuring the dynamic range of signals.
Find the full playlist here: https://www.youtube.com/playlist?list=PLbqhA-NKGP6B6V_AiS-jbvSzdd7nbwwCw
Content:
0:00 Binary system
2:03 Base-2 vs Base-10
3:15 Bit vs Byte
4:44 4 bit audio demo
8:32 Properties of quantization error
9:58 8 bit audio demo
12:27 Signal to Quantization Noise Ratio (SQNR)
16:03 Nature of noise
Audio track used for observing the effects of low bit depth - https://farfetchd-official.bandcamp.com/track/collide
Tools used:
Audacity (Audio editor) - https://www.audacityteam.org/
Sonic Visualiser (waveform/spectrum analyzer) - https://www.sonicvisualiser.org/download.html
Reaper (DAW) - https://www.reaper.fm/
Extra resources:
Binary and Number Representation - https://www.bottomupcs.com/chapter01.xhtml
Binary Arithmetic - https://ryanstutorials.net/binary-tutorial/binary-arithmetic.php
This video series explains the fundamentals of digital audio, how audio signals are expressed in the digital domain, how they're converted and transformed and the advantages of working with digital signals.
If you've got any questions, suggestions or recommendations, type them out here, or send me a message on any of my social channels mentioned below.
A lot of time was spent on creating this series, and I plan to do more. So please consider subscribing if you wish to be notified about more releases in the future. And if you feel generous: https://www.patreon.com/akashmurthy
Check out the audio track in the intro and outro here: https://soundcloud.com/thrifleganger/tinderbox
Check out my music here: https://farfetchd-official.bandcamp.com/
Give me a shout here:
Facebook - https://www.facebook.com/akash.murthy.319
Instagram - https://www.instagram.com/thrifleganger/