Howtosignalprocessing
Is fft faster than convolution?
FFT convolution uses the overlap-add method together with the Fast Fourier Transform, allowing signals to be convolved by multiplying their frequency spectra. For filter kernels longer than about 64 points, FFT convolution is faster than standard convolution, while producing exactly the same result.
How do you convolve two discrete signals in Matlab?
A mathematical way of combining two signals to form a new signal is known as Convolution. In matlab for convolution 'conv' statement is used. The convolution of two vectors, p, and q given as “a = conv( p,q )” which represents that the area of overlap under the points as p slides across q.
