LlPlaySound

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/LSL

PlaySound

llPlaySound

Summary

1/2 Bugs

Function: llPlaySound( string sound, float volume );

86	Function ID
0.0	Forced Delay
10.0	Energy

Plays attached sound once at volume

• string	sound	–	a sound in the inventory of the prim this script is in or a UUID of a sound
• float	volume	–	between 0.0 (silent) and 1.0 (loud) (0.0 <= volume <= 1.0)

Caveats

• If sound is missing from the prim's inventory and it is not a UUID or it is not a sound then an error is shouted on DEBUG_CHANNEL.
• If sound is a UUID then there are no new asset permissions consequences for the object.
  • The resulting object develops no new usage restrictions that might have occurred if the asset had been placed in the prims inventory.
• A call to llPlaySound replaces any other sound (so that only one sound can be played at the same time from the same prim), except sounds started with the deprecated llSound which always plays sound files till the end.
• Sound files must be 10 seconds or shorter.
• Sounds are always sampled at 44.1KHz, 16-bit, mono (stereo files will have one channel dropped--merged (as in combined)--when uploading).
• If the object playing the sound is a HUD, the sound is only heard by the user the HUD is attached to.
  • To play a sound inworld from a HUD use llTriggerSound.
• It is impossible to play two (or more) sounds at the same time and have them start playing at exactly the same time ~ VWR-15663
  • If multiple sound emitters play the same exact sound within range of the viewer at the same time, they are usually not in sync due to latency between the server/client and script execution & communication delays. This can produce echos, odd resonance, and other strange effects that you (probably) do not want.
• When used in conjunction with llSetSoundQueueing, sounds may incorrectly play more than once. This can be fixed by disabling the sound queue if only a single sound sample is to be played.

Important Issues

~ All Issues ~ Search JIRA for related Bugs

BUG-4130

A

llTriggerSoundLimited generates an improper script error when avatar sounds are disabled, llPlaySound disregards parcel settings

Examples

default
 {
     state_entry()
     {
          llPlaySound("some_sound",1.0);
     }
 }

See Also

Functions

•	llTriggerSound	–	Plays a sound unattached.
•	llTriggerSoundLimited
•	llLoopSound	–	Plays a sound attached.
•	llLoopSoundMaster
•	llLoopSoundSlave
•	llPlaySoundSlave
•	llSetSoundQueueing	–	Sets a prim property which allows sounds to be queued, instead of overwriting eachother.
•	llStopSound

Deep Notes

All Issues

~ Search JIRA for related Issues

		SVC-4897	A		llSetSyncTime() - a function for synchronising client side effects
		BUG-4130	A		llTriggerSoundLimited generates an improper script error when avatar sounds are disabled, llPlaySound disregards parcel settings

Signature
function void llPlaySound( string sound, float volume );