vectral~
Description
Use the vectral~ object to filter frame-based signal data such as the output of the fft~ object.
Examples
vectral~ performs different types of smoothing between frames of vectored data (e.g., FFT signals)
Discussion
It may operate in one of the following modes:
rampsmooth <up> <down>- linear ramp across up/down frames to the new value
slide <up> <down>- logarithmic movement to new value
deltaclip <max> <min>- limits the change in samples to be in the given range
Arguments
vector-size [int]
Optional
The argument is the vector size for the operation. It defaults to 512, but should be set appropriately for the size of the vectors you feed into the vectral~ object.
Attributes
Common Box Attributes
Messages
clear
Clears object's sample memory (in case of a blow-up).
deltaclip
Arguments
low-limit
[float]
high-limit [float]
high-limit [float]
In left inlet: The word deltaclip, followed by two floats, limits the change in bins of successive vectors to the values given. This is equivalent to the time-domain deltaclip~ object.
rampsmooth
Arguments
number-of-interpolating-frames
[list]
In left inlet: The word rampsmooth, followed by two ints, causes the vector to be smoothed in a linear fashion across successive frames. The arguments specify the number of frames to use to interpolate values in both directions. This is equivalent to the time-domain filtering done by the rampsmooth~ object.
signal
In left inlet: Accepts a sync signal for the output index of the vector. This is typically in the range of 0 to n-1 where n is the size of the vector.
In middle inlet: A sync signal received in the middle inlet is used to synchronize the input index of the vector being processed. The sync signal will typically be in the range 0 to n-1 where n is the size of the vector. If the range of the sync signal is different than the output index, the incoming vector will be "bin-shifted" by the difference between the two signals.
In right inlet: Signal data to be filtered. This will usually be frequency-domain information such as the output of an fft~ or fftin~ object.
In middle inlet: A sync signal received in the middle inlet is used to synchronize the input index of the vector being processed. The sync signal will typically be in the range 0 to n-1 where n is the size of the vector. If the range of the sync signal is different than the output index, the incoming vector will be "bin-shifted" by the difference between the two signals.
In right inlet: Signal data to be filtered. This will usually be frequency-domain information such as the output of an fft~ or fftin~ object.
size
Arguments
vector-size
[int]
In left inlet: The word size, followed by a number, sets the vector size for the operation. The default is 512.
slide
Arguments
slide-denominator-coefficients (2 floats)
[list]
Output
signal
A smoothed version of the signal input into the right inlet, according to the parameters given to the vectral~ object.
See Also
| Name | Description |
|---|---|
| Spectral Processing | Spectral Processing |
| cartopol | |
| cartopol~ | |
| deltaclip~ | |
| fft~ | |
| fftin~ | |
| fftinfo~ | |
| fftout~ | |
| frameaccum~ | |
| framedelta~ | |
| ifft~ | |
| pfft~ | |
| poltocar | |
| poltocar~ | |
| rampsmooth~ | |
| slide~ | |
| MSP Analysis Tutorial 4: Signal Processing with pfft~ | MSP Analysis Tutorial 4: Signal Processing with pfft~ |