Download presentation

Presentation is loading. Please wait.

1
**Why is the amplitude spectrum important?**

Why is the phase spectrum unimportant?

2
**Amplitude spectra of [s] and [S]. Which is which? How can you tell?**

Frequency p.s. On each plot, there is a jiggly black curve and a smoother red curve. The black ones are Fourier amplitude spectra. What are the smoother red ones?

3
**Amplitude spectra of [s] and [S]. Which is which? How can you tell?**

Frequency Answer: The smooth red curves are spectrum envelopes.

4
**Phase spectra of [s] and [S].**

Which is which? Can’t tell? Neither can I. The two phase spectra are different, but (unlike the amplitude spectra) not in any predictable way.

5
Moral: The amplitude spectrum tells you something useful about the nature of the sound. (It tells you what frequencies are present at what amps.) The phase spectrum does not. This is why the ear goes thru all the trouble to get rid of the phase information. [S] [s]

Similar presentations

OK

The Spectrum n Jean Baptiste Fourier (1768-1830) discovered a fundamental tenet of wave theory n All periodic waves are composed of a series of sinusoidal.

The Spectrum n Jean Baptiste Fourier (1768-1830) discovered a fundamental tenet of wave theory n All periodic waves are composed of a series of sinusoidal.

© 2017 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on history of badminton sports Ppt on limitation act in pakistan Ppt on human eye structure A ppt on golden ratio Ppt on cartesian product model Ppt on earth movements and major landforms Ppt on information security and social networking Ppt on world book day images Ppt on different types of dance forms renaissance Ppt on different types of farming in india