Revision Difference
sound.Generate#562087
<function name="Generate" parent="sound" type="libraryfunc">
<description>
Creates a sound from a function.
</description>
<realm>Client</realm>
<args>
<arg name="indentifier" type="string">An unique identified for the sound.
<warning>You cannot override already existing ones.</warning>
</arg>
<arg name="samplerate" type="number">The sample rate of the sound. Must be `11025`, `22050` or `44100`.</arg>
<arg name="length" type="number">The length in seconds of the sound to generate.</arg>
<arg name="callback" type="function">A function which will be called to generate every sample on the sound. ⤶
⤶
⤶
<callback>
<arg type="number" name="sampleIndex">The current sample number.</arg>
<ret type="number" name="sampleValue">The return value must be between `-1.0` and `1.0`.
Other values will wrap back to the -1 to 1 range and basically clip.
There are **65535** possible quantifiable values between -1 and 1.</ret>
</callback></arg>⤶
<arg name="callbackOrData" type="function" alttype="table">⤶
A function which will be called to generate every sample on the sound. ⤶
⤶
<callback>
<arg type="number" name="sampleIndex">The current sample number.</arg>
<ret type="number" name="sampleValue">The return value must be between `-1.0` and `1.0`.
Other values will wrap back to the -1 to 1 range and basically clip.
There are **65535** possible quantifiable values between `-1` and `1`.</ret>
</callback>⤶
⤶
This argument can also be given a table of samples, where values must range from `-1` to `1`. ⤶
This argument can also be a string of raw 16bit binary data, (each sample is unsigned short).⤶
</arg>⤶
<arg name="loopStart" type="number" default="nil" added="2024.06.04">Sample ID of the loop start. If given, the sound will be looping and will restart playing at given position after reaching its end.</arg>⤶
</args>
</function>
<example>
<description>Plays a 2000 Hz sine wave at maximum volume.</description>
<code>
local frequency = 2000 -- Hz
local samplerate = 44100
local function data( t )
return math.sin( t * math.pi * 2 / samplerate * frequency )
end
test_sound_id = test_sound_id and test_sound_id + 1 or 10
sound.Generate( "testgen" .. test_sound_id, samplerate, 2, data )
surface.PlaySound( "testgen" .. test_sound_id )
</code>
</example>