Stereo Panning
| 2007-11-19 00:10:15 by Andrew Plotkin | 2007-11-19 01:31:14 by Andrew Plotkin | ||||
|---|---|---|---|---|---|
| 28 | 28 | ||||
| 29 | The world is a two-dimensional plane. A mono sound | 29 | The world is a two-dimensional plane. A mono sound | ||
| > | comes from a position (X,Y). A stereo sound is eq | > | comes from a position (X,Y). A stereo sound is eq | ||
| > | uivalent to two mono sounds, coming from positions | > | uivalent to two mono sounds, coming from positions | ||
| > | (X0,Y) and (X1,Y). | > | (X0,Y) and (X1,Y). | ||
| 30 | 30 | ||||
| 31 | Note that while the panning model is two-dimension | 31 | Note that while the panning model is two-dimension | ||
| > | al, Boodler currently supports only stereo (two-ch | > | al, Boodler currently supports only stereo (two-ch | ||
| > | annel) output. So only the X axis affects the appa | > | annel) output. So only the X axis affects the appa | ||
| > | rent position of a sound. The Y axis is used only | > | rent position of a sound. The Y axis is used only | ||
| > | for fading-into-the-distance effects. | > | for fading-into-the-distance effects. | ||
| 32 | 32 | ||||
| t | t | 33 | (On the Y axis, as on the X axis, sounds plateau i | ||
| > | nside the -1 to 1 range. A sound moving towards yo | ||||
| > | u along the Y axis will get louder until, to conti | ||||
| > | nue the earlier metaphor, it flies up your nose at | ||||
| > | Y=1. It will then have constant volume until it p | ||||
| > | ops out the back of your head at Y=-1. Test subjec | ||||
| > | ts who have snorted medical-grade decibel powder r | ||||
| > | eport that is *exactly what it sounds like*. Thank | ||||
| > | you, Dr. Dischord.) | ||||
| 34 | |||||
| 33 | (Someday Boodler will support surround-sound outpu | 35 | (Someday Boodler will support surround-sound outpu | ||
| > | t, and then the Y axis will be more interesting. A | > | t, and then the Y axis will be more interesting. A | ||
| > | nd maybe then I'll add a vertical Z axis to the co | > | nd maybe then I'll add a vertical Z axis to the co | ||
| > | ordinate system.) | > | ordinate system.) | ||
| 34 | 36 | ||||
| 35 | The default position of a mono sound is (0,0). The | 37 | The default position of a mono sound is (0,0). The | ||
| > | default position of a stereo sound is (-1,0) for | > | default position of a stereo sound is (-1,0) for | ||
| > | the left channel, (1,0) for the right channel. | > | the left channel, (1,0) for the right channel. | ||
| 36 | 38 | ||||
| 37 | When you schedule a note, you can apply a transfor | 39 | When you schedule a note, you can apply a transfor | ||
| > | m to it. A Boodler [channel] can apply a transform | > | m to it. A Boodler [channel] can apply a transform | ||
| > | to everything in the channel. These transforms ca | > | to everything in the channel. These transforms ca | ||
| > | n include translation and scaling in the X and Y a | > | n include translation and scaling in the X and Y a | ||
| > | xes. (Boodler does not currently support rotation. | > | xes. (Boodler does not currently support rotation. | ||
| > | But if you want to swap left and right, scale the | > | But if you want to swap left and right, scale the | ||
| > | X axis by -1.) | > | X axis by -1.) | ||
Stereo Panning
- last changed 2007-11-19 01:31:14 by
Andrew Plotkin (zarf)