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92 lines
2.4 KiB
92 lines
2.4 KiB
set terminal pngcairo size 800,600 font "Arial,12"
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# 課題1
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set output 'kadai1.png'
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set xlabel "Time [msec]"
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set ylabel "Normalized Amplitude"
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set xrange [0:30]
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set yrange [-1:1]
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set grid
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plot 'kadai1.txt' using 1:2 with lines title "sample01.sw"
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# 課題2 (リニア)
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set output 'kadai2_linear.png'
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set xlabel "Frequency [Hz]"
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set ylabel "Amplitude"
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set xrange [0:8000]
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set autoscale y
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set grid
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plot 'kadai2_dft.txt' using 1:2 with lines title "DFT", \
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'kadai2_fft.txt' using 1:2 with lines title "FFT"
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# 課題2 (dB)
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set output 'kadai2_db.png'
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set xlabel "Frequency [Hz]"
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set ylabel "Amplitude [dB]"
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set xrange [0:8000]
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set yrange [-90:0]
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set grid
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plot 'kadai2_dft.txt' using 1:3 with lines title "DFT", \
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'kadai2_fft.txt' using 1:3 with lines title "FFT"
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# 課題3 (リニア)
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set output 'kadai3_linear.png'
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set xlabel "Frequency [Hz]"
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set ylabel "Amplitude"
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set xrange [0:8000]
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set autoscale y
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set grid
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plot 'kadai2_fft.txt' using 1:2 with lines title "No Window", \
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'kadai3_window.txt' using 1:2 with lines title "Hanning Window"
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# 課題3 (dB)
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set output 'kadai3_db.png'
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set xlabel "Frequency [Hz]"
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set ylabel "Amplitude [dB]"
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set xrange [0:8000]
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set yrange [-90:0]
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set grid
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plot 'kadai2_fft.txt' using 1:3 with lines title "No Window", \
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'kadai3_window.txt' using 1:3 with lines title "Hanning Window"
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# 課題4 (dB - 各母音個別)
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set xlabel "Frequency [Hz]"
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set ylabel "Amplitude [dB]"
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set xrange [0:8000]
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set yrange [-90:0]
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set grid
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set output 'kadai4_a_db.png'
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plot 'kadai4_a.txt' using 1:3 with lines title "/a/"
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set output 'kadai4_i_db.png'
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plot 'kadai4_i.txt' using 1:3 with lines title "/i/"
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set output 'kadai4_u_db.png'
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plot 'kadai4_u.txt' using 1:3 with lines title "/u/"
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set output 'kadai4_e_db.png'
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plot 'kadai4_e.txt' using 1:3 with lines title "/e/"
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set output 'kadai4_o_db.png'
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plot 'kadai4_o.txt' using 1:3 with lines title "/o/"
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# 発展課題1 (スペクトログラム)
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set pm3d map
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set xlabel "Time [sec]"
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set ylabel "Frequency [Hz]"
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set xrange [0:*]
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set yrange [0:8000]
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set zrange [-90:0]
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set cbrange [-90:0]
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set cblabel "Amplitude [dB]"
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# モノクロ表示（大きいところが黒、小さいところが白）
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set palette defined (-90 "white", 0 "black")
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set output 'hatten1_mono.png'
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splot 'spectrogram.txt' using 1:2:3 notitle
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# カラー表示（Jet風カラーマップ）
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set palette rgbformulae 22,13,-31
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set output 'hatten1_color.png'
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splot 'spectrogram.txt' using 1:2:3 notitle
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