Input for a patcher loaded by pfft~ The fftin~ object provides an signal input to a patcher loaded by a pfft~ object. Cycling '74 MSP MSP FFT Dummy TEXT_HERE Dummy TEXT_HERE Real Input 1 to Patcher TEXT_HERE Imaginary Input 1 to Patcher TEXT_HERE FFT Bin Index TEXT_HERE Inlet number Determines the inlet number of the pfft~ which will be routed into the fftin~ object. Inlet assignment starts at one, for the leftmost inlet in the pfft~. Multiple fftin~ objects will typically have different inlet numbers. Envelope function Specifies the window envelope function the fftin~ object will apply to overlapping FFTs on the input signal. The options are square (i.e. no window envelope), hanning (the default), triangle, hamming and blackman (Note: The Blackman window should be used with an overlap of 4 or more). If the symbol nofft is used, then the fftin~ object will not use a windowing envelope and will not perform a Fast Fourier Transform -- it will echo the first half of its input sample window to its real output and the second half of its input sample window to its imaginary output. This can allow you to input raw control signals from outside the parent patcher through inlets in the pfft~ object, provided its overlap is set to 2. Other overlap values may not yield useful results. Dummy inlet Dummy inlet. The signal input for an fftin~ object is an inlet in the pfft~ subpatcher which contains the object. Where the pfft~ object manages the windowing and overlap of the incoming signal, fftin~ applies the windowing function (the envelope) and performs the Fast Fourier Transform. Out left outlet: This output contains the real-values resulting from the Fast Fourier transform performed on the corresponding inlet of the pfft~. This output frame is only half the size of the parent pfft~ object's FFT size because the spectrum of a real input signal is symmetrical and therefore half of it is redundant. The real and imaginary pairs for one spectrum are called a spectral frame.

Out middle outlet: This output contains the imaginary-values resulting from the Fast Fourier transform performed on the corresponding inlet of the pfft~. This output frame is only half the size of the parent pfft~ object's FFT size because the spectrum of a real input signal is symmetrical and therefore half of it is redundant. The real and imaginary pairs for one spectrum are called a spectral frame.

Out right outlet: A stream of samples corresponding to the index of the current bin whose data is being sent out the first two outlets. This is a number from 0 - (frame size - 1). The spectral frame size inside a pfft~ object's subpatch is equal to half the FFT window size.