this is a very fundamental question.
After referring back to Euler's formula, i got stuck with the object of "fft~"
Before to know how the input signal is represented like "cos(2pi*t)+j*sin(2pi*t)" or, "cos(theta)+i*sin(theta)", what process should be done at the beginning in DSP?
In MSP, the first two outlets of "fft~" send real and imaginary output each, then what does the object do first to derive the two results?
In the complex coordinates (a+bi), from there 'r' and 'theta' can be derived. Then a=cos(theta), b=sin(theta) ? If so, the object "fft~" should detect "theta" from the input signal at the first?