This lecture discusses the concepts of frequency and bandwidth using an analogy that we can easily relate to, namely the piano keyboard and it's associated audible frequencies.

We then consider the variation of a signal voltage with time. In the time domain, this signal is viewed using an oscilloscope. Time-domain signals can be converted to the frequency-domain using a mathematical process called Fourier Transformation invented by French mathematician Joseph Fourier. Frequency-domain signals are viewed using a spectrum analyser.

This lecture discusses the concepts of frequency and bandwidth using an analogy that we can easily relate to, namely the piano keyboard and it's associated audible frequencies.

We then consider the variation of a signal voltage with time. In the time domain, this signal is viewed using an oscilloscope. Time-domain signals can be converted to the frequency-domain using a mathematical process called Fourier Transformation invented by French mathematician Joseph Fourier. Frequency-domain signals are viewed using a spectrum analyser.