thanks everyone for all the "reverberation"
Em qui, 7 de fev de 2019 às 09:23, Dario Sanfilippo < [email protected]> escreveu: > as far as I understand, the idea is to have an FDN, with whatever matrix > you've chosen, whose impulse response is as close as possible to white > noise. The filters that you put inside the network can then be used to > model different environments. > >> cool, thanks There is an algorithm on the website of J. O. Smith to calculate the best > approximation for a desired size while keeping the coprime relationship > between the lengths: > https://ccrma.stanford.edu/~jos/pasp/Prime_Power_Delay_Line_Lengths.html. > awesome > My reverb in PD is a 16th order FDN with Hadamard matrix and 1pole > lowpass filters to model the absorption of high frequencies > yeah, I saw that on the facebook group, and also that you mentioned there it was based on a model by "Rocchesso". > I found these good reads: > > Rocchesso, D. 1997. “Maximally diffusive yet efficient feedback delay > networks for artificial reverberation.” In Signal Processing Letters, > IEEE 4 (9), 252255. > > Rocchesso, D., and J. O. Smith. 1997. “Circulant and Elliptic Feedback > Delay Networks for Artificial Reverberation.” I EEE Transactions on > Speech and Audio Processing 5 (1):51–63. > yup, that's the source then :) I was able to find them both online! Now, a question. You say it uses a Hadamard matrix, but I've realized it's basically the same matrix as used in [rev3~], it's only flipped vertically (I hope you know what I mean) and I ask if it is the same matrix or if this difference grants it to be another matrix that goes by a different name? > Ciao, > Dario > Tchau, obrigado
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