4 notes- Acoustic Phonetics 2.pptx

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75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time ms Amplitude 0 25 50 75 10 0 12 5 15 0 17 5 20 0
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Fourier time 3 Hz 7 Hz 3+7 Hz 0 25 50 75 100 125 150 175 200
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Easier way to read frequency? 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 -10 -5 0 5 10 15 20 Time ms Amplitude amplitude = energy!
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Spectrum 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 0 0.2 0.4 0.6 0.8 1 1.2 Frequency Amplitude Spectrum 300+2100
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Spectrum 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 2400 2600 0 0.2 0.4 0.6 0.8 1 1.2 Frequency Amplitude 500Hz+1000+2200Hz
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Spectrum 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 0 0.2 0.4 0.6 0.8 1 1.2 Frequency Amplitude
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Spectrum 0 500 1000 1500 2000 2500 3000 0 2 4 6 8 10 12 Frequency Amplitude 500 Hz
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Spectrum 0 500 1000 1500 2000 2500 3000 0 2 4 6 8 10 12 Frequency Amplitude 700 Hz + 2500 Hz
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Spectrum 0 500 1000 1500 2000 2500 3000 0 2 4 6 8 10 12 Frequency Amplitude 200 Hz + 600 Hz + 1200 Hz
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Graphs of Sound Waveform: x-axis y-axis inducible Spectrum x-axis y-axis Imagine I play one pure tone and then switch to a different one…
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Waveform 0 25 50 75 100 125 150 175 200 225 250 275 300 325 350 375 400 425 450 475 500 -5 -4 -3 -2 -1 0 1 2 3 4 5 Time ms Amplitude
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Time with spectrums 0 200 400 600 800 0 0.2 0.4 0.6 0.8 1 1.2 100 ms Frequency Amplitude 0 200 400 600 800 0 0.2 0.4 0.6 0.8 1 1.2 200 ms Frequency Amplitude 0 200 400 600 800 0 0.2 0.4 0.6 0.8 1 1.2 300 ms Frequency Amplitude 0 200 400 600 800 0 0.2 0.4 0.6 0.8 1 1.2 400 ms Frequency Amplitude
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Time with spectrums
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Time with spectrums Spectrogram!
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Spectrogra m Spectrogram x-axis: time y-axis: frequency shading: amplitude frequency time
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Spectrogra m 2500 Hz
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Spectrum
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Waveform 300 Hz then 2100 Hz
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Spectrum
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Spectrogra m
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