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COMD 5070 Spectra - FFT, LPC

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COMD 5070 Spectra - FFT, LPC Two Types of Spectrum - Types Discussed in Class: ️ FFT and LPC Fast Fourier Transform (FFT) - What FFT Stands For: ️ Fast Fourier Transform - What an FFT Spectrum Shows Us: ️ Shows the range of harmonics that are present in sound; each peak shows...

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  • August 15, 2024
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  • COMD 5070 Spectra - FFT, LPC
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COMD 5070 Spectra - FFT, LPC


Two Types of Spectrum

- Types Discussed in Class:

✔️ FFT and LPC



Fast Fourier Transform (FFT)

- What FFT Stands For:

✔️ Fast Fourier Transform



- What an FFT Spectrum Shows Us:

✔️ Shows the range of harmonics that are present in sound; each peak shows a harmonic.

- This representation provides information about the frequency components of a sound signal.



- What FFT Does Not Show Well:

✔️ Formants.

- It is less effective in representing the overall shape of the frequency response of the vocal tract, which
is important for understanding speech sounds.



- Utility of FFT Display:

✔️ Useful for displaying features of the sound source.

- Primarily helps in analyzing harmonic structures, which relate to the source of sound production.



Linear Predictive Coding (LPC)

- What LPC Stands For:

✔️ Linear Predictive Coding



- What the LPC Shows Us:

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