https://padlet.com/giuliawaddington/sw76676zijob made with love en-us 2017-03-01 09:40:26 UTC 2017-03-01 10:14:09 UTC hello@padlet.com https://padlet-assets.s3.amazonaws.com/icons/Planets.png giuliawaddington https://padlet.com/giuliawaddington/sw76676zijob/wish/156962483
Capturing an amplitude over time is called 'sampling'.
A sample is a static representation of a waveform in time.
The amount of samples taken per second is called the 'sample rate'.

If you sample a 20khz frequency using a sample rate of 20khz, you only take one sample per complete cycle.
To capture both the (+) and (-) side of the waveform you will need to use a sample rate double the frequency you want to sample.
A sample at 20khz needs a sample rate of 40khz.

]]> 2017-03-01 10:00:36 UTC https://padlet.com/giuliawaddington/sw76676zijob/wish/156962483 giuliawaddington https://padlet.com/giuliawaddington/sw76676zijob/wish/156964429 FS=2xFN
FS=Sampling Frequency 
FN=Nyquist Frequency ]]> 2017-03-01 10:09:03 UTC https://padlet.com/giuliawaddington/sw76676zijob/wish/156964429 giuliawaddington https://padlet.com/giuliawaddington/sw76676zijob/wish/156965001 Digital systems have a resolution on the amplitude-axis. The higher the resolution, the more accurate the digital representation of the wave's amplitude is.
This is determined by the bit-depth of the recording.
The higher the bit-depth the higher dynamic range that can be captured.

]]> 2017-03-01 10:11:49 UTC https://padlet.com/giuliawaddington/sw76676zijob/wish/156965001