README.md

In akinori-ito/audio2specgram: audio2specgram: Calculate STFT (Short Term Fourier Transform) of a time sequence

audio2specgram: Calculate Time-Frequency Representation from time series

This is an R package for STFT (Shoft Term Fourier Transform). Using this package you can calculate STFT and inverse STFT from a time series.

Example

``` library(audio2specgram) library(signal)

t<-seq(0,10,0.1) t<-seq(0,100,0.1) x<-cos(2*t)

plot(t,x,type="l")

conf<-stftconfig(width=128,frameshift=64,towindow=hanning,fromwindow=rectwin)

ft<-audio2specgram(x,conf)

image(abs(ft))

y<-specgram2audio(ft,conf)

plot(y,type="l")

akinori-ito/audio2specgram documentation built on May 29, 2019, 3:03 a.m.