In this video, we take what we learnt from the previous video on the Nyquist Shannon Sampling Theorem and apply it to real world audio signals. We discover some of the commonly used sample rates used in audio consumption and transmission and the advantages and disadvantages of using them. We look at the difference between bandwidth in the context of signal and the context of transmission, and discuss why lower rates are ideal for consumption, and higher rates are only required during signal processing.
Find the full playlist here: https://www.youtube.com/playlist?list=PLbqhA-NKGP6B6V_AiS-jbvSzdd7nbwwCw
Content:
0:00 Intro to sampling theory
2:19 Common audio sample rates
3:04 Bandwidth
5:04 8kHz
7:39 Sampling with Audacity
11:26 16kHz
12:00 44.1kHz
12:47 48kHz
13:16 Higher sampling rates
Tools:
Audacity (Free audio editing software) - https://www.audacityteam.org/download/
Sonic Visualiser (waveform/spectrum analyzer) - https://www.sonicvisualiser.org/download.html
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.
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Check out the audio track in the intro and outro here: https://soundcloud.com/thrifleganger/tinderbox
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