audio signal in spectrogram
6 ビュー (過去 30 日間)
古いコメントを表示
Hello,
How to apply window function for a audio signal in spectrogram and compare it with the one without applying window function ?
採用された回答
Wayne King
2013 年 3 月 7 日
編集済み: Wayne King
2013 年 3 月 7 日
You can supply the window argument as a vector.
Signal
t=0:0.001:2;
x=chirp(t,0,1,150);
Now to find the short-time Fourier transforms
% without a window
win = ones(200,1);
[S,F,T] = spectrogram(x,win,100,200,1000);
% with a hamming window
win = hamming(200);
[Swin,Fwin,Twin] = spectrogram(x,win,100,200,1000);
3 件のコメント
Wayne King
2013 年 3 月 8 日
[S,F,T] = spectrogram(x);
is not without a window. If you read the documentation, you'll see that syntax uses a Hamming window.
I've shown you how to not use a window function above. Use a vector of ones, or rectwin()
その他の回答 (1 件)
UMAIR RASOOL
2020 年 8 月 1 日
close all
clear all
clc
[y,Fs]=audioread('black_hole.mp3');
windowSize = 256;
windowOverlap = [];
freqRange = 0:Fs;
spectrogram(y(:,1), windowSize, windowOverlap, freqRange, Fs, 'xaxis');
0 件のコメント
参考
カテゴリ
Help Center および File Exchange で Time-Frequency Analysis についてさらに検索
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!