水平均值滤波器的matlab代码

Question

如何将水平均值滤波器应用于matlab中的谱图？

Answer 1

有很多方法。例如，您可以使用conv。

对于一维谱图：

%# create some sample data 
spectrogram = randn(1,1000); %# row vector of length 1000 with random values 

%# define filter window 
windowSize = 5; %# size of filter window 

%# filter 
filteredSpectrogram = conv(spectrogram,ones(1,windowSize)/windowSize,'same'); 

对于二维谱图（和水平仅为filter）

%# create some sample data 
spectrogram = randn(100,1000); %# 100 rows, 1000 cols of random values 

%# define filter window 
windowSize = 5; %# size of filter window 

%# filter 
filteredSpectrogram = conv2(spectrogram,ones(1,windowSize)/windowSize,'same');