Week 3 — Digital audio processing, sampling, MIDI

Tuesday, Sept 23, 1:30-3:20 PM, Phelps 207

Reading due next week

Roads, Ch. 4, “Sampling and Additive Synthesis”
pp. 117 – 146 (up to Musical Applications…)
Roads, Ch. 21, “MIDI”
pp. 972 – 990 (up to Status and Data Bytes)
pp. 996 (from Continuous Control via MIDI) – 1000
Logic Pro 8 User Manual
(available as a PDF from the “Help” menu)
Ch. 2, “Overview of the Logic Pro Interface”
Logic Pro 8 Getting Started
(available as a PDF from the “Help” menu)
Ch. 1–4

Theoretical Review

Conceptual Tutorials

  1. 2. Sampling

Software and Hardware Demonstrations

Lecture Slides

Class03.pdf

Exercise 1

Finish Exercise 1

Lab Session 2

Hours TBA, YalMusT Lab, Studio B16A, 143 Elm Street

Terms To Know

musique concrète
Edwin Welte's Light-tone Organ
Pierre Schaeffer's Phonogène
Mellotron
Fairlight CMI

looping - choral samples
ADSR envelope - attack, decay, sustain, release
splice looping, crossfade looping
pitch-shifting
sample-rate conversion
downsampling - (fewer samples, faster, higher pitch)
upsampling - (more samples, slower, lower pitch)

interpolation
sample library
additive synthesis
Telharmonium
harmonics
histogram
phase
partial
inharmonic
time-varying additive synthesis

control data versus sound
MIDI standard - 1983
MIDI messages
bits and bytes
MIDI ports - IN, OUT, THRU
MIDI computer interface (MIDI interface)
MIDI THRU - daisychaining, diagram p. 979

MIDI Channels
single MIDI connection carries 16 channels

Controller Change
continuous controller
7 bit field for controller number
7 bit field for value
1	Modulation Wheel
2	Breath Contoller
4	Foot Controller
7	Main Volume
10	Pan
64	Damper Pedal (Sustain) [Data Byte of 0-63=0ff, 64-127=On]
96	Data Increment
97	Data Decrement

Pitch Bend
applies to the entire channel
7 bits coarse range
7 bits fine range
14 bits total 16,384 pitch Divisions