From 346c7438b760a5e6795b007551232d8567e8f8b1 Mon Sep 17 00:00:00 2001 From: zymon Date: Wed, 11 May 2022 14:13:32 +0200 Subject: [PATCH] README.md update --- README.md | 79 ++++++++++++++++++++++++++++++++++++++++++------------- 1 file changed, 61 insertions(+), 18 deletions(-) diff --git a/README.md b/README.md index e05823c..8050683 100644 --- a/README.md +++ b/README.md @@ -1,31 +1,74 @@ -# STFT.jl +# `STFT.jl` - Short-Time Fourier Transform [![](https://img.shields.io/badge/docs-stable-blue.svg)](https://docs.zymon.org/STFT.jl/) -`STFT.jl` is a Julia package implementing Short-Time Fourier Transform (STFT) routines. -It provides signal analysis (time-domain signal to STFT-domain signal; stft) -and signal synthesis (STFT-domain siganl to time-domain signal; istft). +`STFT.jl` is a small Julia package implementing just Short-Time Fourier Transform (STFT) routines. +It provides the following core functionality: +- **_signal analysis_**; transform time-domain signal to STFT-domain signal. +- **_signal synthesis_**; transform STFT-domain signal to time-domain signal. +Check the [documentation](https://docs.zymon.org/STFT.jl/) for more insights. -# Examples +## Installation + +The package is currently not available in [General](https://github.com/JuliaRegistries/General), the default Julia package registry. + +To install it, use the following command in Julia package manager: +```julia +pkg> add https://github.com/s-zymon/STFT.jl +``` + +## Examples + +Below you can find a few standalone example with basic usage of the package. + +### Show spectrogram + +```julia +using STFT +using Plots + +x = randn(10000) # Generate mock signal +W = 64 # Window length +w = ones(W) # Rectangular analysis window +H = 10 # Hop +L = W - H # Overlap + +X = stft(x, w, L) # Analysis +s = abs2.(X) # Compute spectrogram +heatmap(10log10.(s)) # Display spectrogram +``` + +### Analyse signal, modify, and synthesise +```julia +using STFT + +x = randn(10000) # Generate mock signal +W = 64 # Window length +w = ones(W) # Rectangular analysis window +H = 10 # Hop +L = W - H # Overlap + +X = stft(x, w, L) # Analysis +X = f(X) # Modify STFT-domain signal +y = istft(X, w, L) # Synthesis +``` + +Alternatively, instead of `using STFT`, you can `import STFT`, +and use an alternative API, i.e., `analysis` and `synthesis`. ```julia import STFT -x = rand(10000) # Generate mock signal -W = 64 # Window length -w = ones(W) # Rectangular analysis window -H = 10 # Hop -L = W - H # Overlap +x = randm(10000) # Generate mock signal +W = 64 # Window length +w = ones(W) # Rectangular analysis window +H = 10 # Hop +L = W - H # Overlap X = STFT.analysis(x, w, L) # Analysis - -# Compute spectogram of the signal -spectogram = abs2.(X) - -# X = f(X) # Modify STFT-domain signal - -# Reconsturction -xr = STFT.synthesis(X, w, L) # Synthesis +X = f(X) # Modify STFT-domain signal +y = STFT.synthesis(X, w, L) # Synthesis ``` +