ep-413 DSP week 6

Convolution and Voices

 

Convolution

part 1 – The time domain:

(The frequency domain):

The impulse response

  • Decomposition
  • Unit impulse (delta function)
  • convolution (from the input side and output side)
  • filters

From the output side:

Screen Shot 2014-10-05 at 3.01.04 PM

The convolution sum:

Reference: http://www.dspguide.com “The Scientist and Engineer’s Guide to DSP”, By Steven Smith – chapters 6-7
Common impulse responses:
F_7_1.gif

A ‘block diagram’ of a high pass filter. The impulse response of  low pass filter is subtracted from the impulse response of an all pass filter. Note that the all pass filter is the ‘delta response’:

Applications

Voices

Examples

Questions

 

ep-413 DSP week 5

Assignment:

Composition: Sound-byte 

  • The sound-byte is a short audio clip of speech.
  • The speech can come from anywhere. Something familiar, something famous, something unusual.
  • Every sound in the composition is derived only from the sound-byte. You can use any tool or method.
  • The sound-byte in its original form should occur somewhere in the piece
  • Duration: roughly 2-3 minutes?  That is up to you.