Synchronizing Sound Channels

Synchronizing Sound Channels Getting channels to work together

You can synchronize several different sound channels by issuing syncCmd

commands. The param1 field of the sound command contains a count, and the

param2 field contains an arbitrary identifier. Every syncCmd command is

held in the channel, suspending any further processing until its count equals 0.

The Sound Manager first decrements the count and then waits for an other

syncCmd command having the same identifier to be received on an other

channel.

For example, to synchronize four wave-table channels, send a syncCmd

command to the first channel with a count equal to 4, to the second channel

with a count equal to 3, and so on, giving each command the same identifier. The

Sound Manager decrements the count for each channel having a given

identifier each time it receives a syncCmd command. As a result, after you

send the fourth channel a count equal to 1, all four channels will have their

count set to 0 and will resume processing their queued commands.

Note: The syncCmd command is intended to make it easy to

synchronize channels linked either to the wave-table synthesizer or

to the square-wave synthesizer. Applications needing to synchronize

and control the execution of multiple channels of sampled sound

should probably use the Time Manager.