Next |
Prev |
Up |
Top
|
JOS Index |
JOS Pubs |
JOS Home |
Search
A very simple signal model is a recording of the desired sound
indexed by controller state (key-press, pedal,
)
- Such a procedure is called instrument sampling
- For example, consider the following example sampled piano:
- The Synthogy Ivory (a $349 software product in 2006),
ships as 40 Gigabytes on ten DVDs (three sampled pianos)
- Every key is sampled
- 4-10 ``velocity layers''
- Separate recordings with the soft pedal down
- Separate ``release'' recordings, for multiple striking
velocities
- Sampling is highly laborious, but nevertheless the most common
method
- Dimensions of expressive performance are limited
- Continuously-controlled instruments such as bowed-string, wind,
and brass instruments are drastically oversimplified
- Piano performance is well digitized by MIDI (key-number,
key-velocity)
- Piano pedals are continuous controls, however
- Bowed-string and wind instruments have multiple continuous
dimensions of control (many MIDI ``controllers'' needed in principle)
- Interaction with the instrument state is invariably sacrificed
The main advantage of sample-based sound synthesis is the high sound
quality (limited only by the original recordings and subsequent signal
processing)
Next |
Prev |
Up |
Top
|
JOS Index |
JOS Pubs |
JOS Home |
Search
Download IntroPM.pdf
Download IntroPM_2up.pdf
Download IntroPM_4up.pdf