KIN121 Chapter Notes - Chapter 2: Oscilloscope, Discrete-Time Signal, Wavelength
12 Dec 2014
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Vinyl analog (lossless) vs. digital (gaps in between signal which worsens quality) Top box: amplifier (to pump up signal to easier observe)/transducer (what we use to measure signal of interest [back emg])) Man -> top box is still analog. Can there send to an oscilloscope (lossless, like vinyl) Def: process by which an analog (real life) signal is converted into a digital signal. (robertson, 2004m 235) Def: a continuous electrical signal, which has the same characteristics as another physical signal of interest (eg. force, pressure, acceleration) Def: (a) numerical: (b) quantity that can be represented by a number suitable for use by digital computers sampled at regular intervals (not lossless) ***sample rate should be high for good quality data. Output transducer adc card/hardware -> computer. a/d is. Cannot interpret output transducer immediately, converted into desirable number through calibration . Calibration & previous steps needed to get a concludable answer to reply on.
