slide1 l.
Download
Skip this Video
Download Presentation
II.1 Physical Reality II.1.1 (W Sept 15) Sound Anatomy

Loading in 2 Seconds...

play fullscreen
1 / 9

II.1 Physical Reality II.1.1 (W Sept 15) Sound Anatomy - PowerPoint PPT Presentation


  • 410 Views
  • Uploaded on

II.1 Physical Reality II.1.1 (W Sept 15) Sound Anatomy air waves 343 m/s auditory cortex ear room acoustics instrument (sound source) musician The overall picture f = sound wave frequency pitch( f ) = 1200/log 10 (2) . log 10 ( f ) + const. [Ct] (Cent)

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'II.1 Physical Reality II.1.1 (W Sept 15) Sound Anatomy' - EllenMixel


Download Now An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

II.1 Physical Reality

II.1.1 (W Sept 15) Sound Anatomy

slide2

air waves 343 m/s

auditory cortex

ear

room acoustics

instrument(sound source)

musician

The overall picture

f = sound wave frequencypitch( f ) = 1200/log10(2) . log10( f ) + const. [Ct] (Cent)

A = sound wave pressure amplitudeloudness(A ) = 20. log10(A/A0 ) + const. [dB] (Dezibel)A0 = 2.10-5 N/m2 (threshold)

Weber-Fechner

slide4

Sound anatomy

Classical Joseph Fourier (partials/overtones) ~ 1800

Frequency Modulation (FM) John Chowning ~ 1970

Wavelets (Jean Morlet et al.) ~ 1984

Physical Modeling (Claude Cadoz et al.) ~ 1989

slide5

envelope H

+

=

wave w

w. H

support

Sound anatomy

Classical Joseph Fourier (partials/overtones) ~ 1800

shift and squeeze

slide6

2nd partial

= 2nd overtone

amplitudelength of arrow

wave w

phase (angle)

fundamental= 1st partial

= 1st overtone

Sound anatomy

Classical Joseph Fourier (partials/overtones) ~ 1800

every periodic function!!!

w(t) = Ac + A1 sin(2.ft+Ph1) + A2 sin(2.2ft+Ph2) + A3 sin(2.3ft+Ph3) +...

slide7

Yamaha DX7

modulator

carrier

Sound anatomy

Classical Joseph Fourier (partials/overtones) ~ 1800

Frequency modulation (FM) John Chowning ~ 1970

w(t) = Ac + A1 sin(2.ft+Ph1) + A2 sin(2.2ft+Ph2) + A3 sin(2.3ft+Ph3) +...

W(t) = Ac + A1 sin(2.ft+Ph1 +A2 sin(2.2ft+Ph2+ A3 sin(2.3ft+Ph3)))

carrier

modulator

modulator

slide8

Sound anatomy

Classical Joseph Fourier (partials/overtones) ~ 1800

Frequency Modulation (FM) John Chowning ~ 1970

Wavelets (Jean Morlet et al.) ~ 1984

slide9

Singer Synthesis: Perry Cook

Sound anatomy

Classical Joseph Fourier (partials/overtones) ~ 1800

Frequency Modulation (FM) John Chowning ~ 1970

Wavelets (Jean Morlet et al.) ~ 1984

Physical Modeling (Claude Cadoz et al.) ~ 1989

http://www.cs.princeton.edu/%7eprc/SingingSynth.html