Vowel Recognition using Discrete Tchebichef Transform.
y
Speech signal windowed
0.03
y
y
Speech signal windowed
0.2
Speech signal windowed
0.15
y
Speech signal windowed
Amplotude
0.004
0.02
192
0.0
192
x
-0.002
-0.004
192
0
64
y
Amplitude
0.3
128
Time
192
x
256
Frame 1
Speech signal on frame 10
0.2
0.1
0.0
-0.1
-0.2
-0.3
0
64
128
Time
192
256 x
256
Frame 2
x
256
Frame 3
x
256
Frame 16
0.12
Power (dB)
0.09
0.06
0.03
0.0
0
1024
2048
3072
4096
y
Power (dB)
4.5
x 10-4
3
1.5
0
0
x
1024
2048
Frequency (Hz)
3072
4096
y
y
10
40
Magnitude (dB)
Power/Frequency (dB/Hz)
80
0
10 1
10 0
-40
-80
0
1024
2048
3072
x
4096
Frequency (Hz)
y
100
50
0
-50
0
1024
2048
Frequency (Hz)
10 -1
0
1024
2048
Frequency (Hz)
150
Power/Frequency (dB/Hz)
2
3072
4096
x
3072
x
4096
y
10
4
Magnitude (dB)
10 3
10 2
10 1
10 0
10 -1
0
1024
2048
Frequency (Hz)
3072
x
4096
Speech signal windowed
0.03
y
y
Speech signal windowed
0.2
Speech signal windowed
0.15
y
Speech signal windowed
Amplotude
0.004
0.02
192
0.0
192
x
-0.002
-0.004
192
0
64
y
Amplitude
0.3
128
Time
192
x
256
Frame 1
Speech signal on frame 10
0.2
0.1
0.0
-0.1
-0.2
-0.3
0
64
128
Time
192
256 x
256
Frame 2
x
256
Frame 3
x
256
Frame 16
0.12
Power (dB)
0.09
0.06
0.03
0.0
0
1024
2048
3072
4096
y
Power (dB)
4.5
x 10-4
3
1.5
0
0
x
1024
2048
Frequency (Hz)
3072
4096
y
y
10
40
Magnitude (dB)
Power/Frequency (dB/Hz)
80
0
10 1
10 0
-40
-80
0
1024
2048
3072
x
4096
Frequency (Hz)
y
100
50
0
-50
0
1024
2048
Frequency (Hz)
10 -1
0
1024
2048
Frequency (Hz)
150
Power/Frequency (dB/Hz)
2
3072
4096
x
3072
x
4096
y
10
4
Magnitude (dB)
10 3
10 2
10 1
10 0
10 -1
0
1024
2048
Frequency (Hz)
3072
x
4096