Digital signal processing

Wikipedia: DSP

• DSP.jl : Filter design, periodograms, window functions, and other digital signal processing functionality.
• ImageMethodReverb.jl : Julia implementation of a Room Acoustics Impulse Response Generator using the Randomized Image Method (RIM).
• MDCT.jl : This module computes the modified discrete cosine transform (MDCT) in the Julia language and the inverse transform (IMDCT), using the fast type-IV discrete cosine transform (DCT-IV) functions in Julia (via FFTW).
• Peaks.jl : Find peaks (local extrema) of 1D signals.
• SortFilters.jl : Fast moving quantile filters implemented as fast moving window sort algorithm.
• Wavelets.jl : Fast Discrete Wavelet Transforms written in Julia by JuliaDSP.

Fast Fourier transform (FFT)

Wikipedia: FFT

• FFTViews.jl : Julia package for fast Fourier transforms and periodic views.
• FFTW.jl : Julia bindings to the FFTW library for fast Fourier transforms.
• FourierTools.jl : Tools for working with Fourier space. JuliaCon 2021 video
• HexFFT.jl : Fast Fourier transform on hexagonal grids using the Birdsong and Rummelt’s hexagonal fast fourier transform.
• NFFT.jl : Julia implementation of the Non-equidistant Fast Fourier Transform (NFFT).