270b-01-mar30.mp4
TBW
270b-02-mar30.mp4
1:00 finding and loading the example patches from classes. Some Pd basics.
5:30 complex-mpy~ abstraction
7:00 ampliude detection from previous class understood as a frequency shift
14:30 real and complex sinusoids. Real sinusoid is sum of two complex ones
21:00 measuring amplitude and phase of a complex sinusoid
27:00 single sideband modulation as product of complex sinusoids
32:00 x/y plot using Pd of a complex sinusoid.
33:00 Positive frequency sinusoids travel counter-clockwise in complex plane
40:00 Measuring phase differences between neighboring sinusoids
42:30 complex conjugate negates frequencies of sinusoids
43:30 phase difference3 between an incoming sinusoid and a known sinusoid
51:00 analysing complex spectra (tones with more than one partial)
56:00 spectrum of frequency-shifted complex sinusoid making 6 components visible
1:01:00 low-pass filtering a sum of complex sinusoids
1:03:00 Fourier analysis of a periodic tone
1:08:00 Short-time Fourier transform
1:09:00 Window as a segment in time
1:13:00 windowing a non-periodic signal
1:15:00 trade-off between time and frequency resolution