can someone tell me which color map is this?

[krishna chauhan]

I want to draw the spectrogram in this colormap, please guide.

[Dan Ellis]

That's jet, the default colormap for Matlab up until R2014b.  That particular image is only using the top-half of the color range.

Jet is unpopular: It has the unfortunate property that min-value (dim blue) and max-value (dim red) are perceptually close.  The color changes can introduce illusory boundaries.  It's also not particularly colorblind-friendly.  Intensity-ordered colormaps such as viridis are usually preferred.

  DAn.

On Tue, Aug 17, 2021 at 11:00 AM krishna chauhan <krishn...@gmail.com> wrote:

I want to draw the spectrogram in this colormap, please guide.

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[krishna chauhan]

@dan sir, Thanks a lot I am getting this using the code below :

path=glob.glob('E:/Python_On_All_Dataset/Four emotion_for plot/*.wav') 

fig, ax =  plt.subplots(nrows=4, ncols=3, sharex=True) 

for i in range(4) :

    y, sr = librosa.load(path[i], sr=16000)

    librosa.display.waveplot(y, sr, ax=ax[i, 0])  

    mfcc=librosa.feature.mfcc(y) 

    librosa.display.specshow(mfcc, x_axis='time', ax=ax[i, 1],cmap='viridis')

    S = librosa.feature.melspectrogram(y, sr)

    librosa.display.specshow(librosa.power_to_db(S), x_axis='time', y_axis='log', ax=ax[i, 2],cmap='viridis')  

    plt.axis('off')

The result is 

Plz guide how to remove the axis as it's creating the problem, or can I reduce the axis font size?