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fix for stereo panning adding _calc_output_vol_stereo issue 103989

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Julian Todd 2025-03-31 18:33:39 +01:00
parent 4248411baf
commit daf8eee9cb
4 changed files with 31 additions and 6 deletions
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doc/classes/AudioStreamPlayer3D.xml
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@ -94,7 +94,9 @@
The maximum number of sounds this node can play at the same time. Playing additional sounds after this value is reached will cut off the oldest sounds.
</member>
<member name="panning_strength" type="float" setter="set_panning_strength" getter="get_panning_strength" default="1.0">
Scales the panning strength for this node by multiplying the base [member ProjectSettings.audio/general/3d_panning_strength] with this factor. Higher values will pan audio from left to right more dramatically than lower values.
Scales the panning strength for this node by multiplying the base [member ProjectSettings.audio/general/3d_panning_strength] by this factor. If the product is [code]0.0[/code] then stereo panning is disabled and the volume is the same for all channels. If the product is [code]1.0[/code] then one of the channels will be muted when the sound is located exactly to the left (or right) of the listener.
Two speaker stereo arrangements implement the [url=https://webaudio.github.io/web-audio-api/#stereopanner-algorithm]WebAudio standard for StereoPannerNode Panning[/url] where the volume is cosine of half the azimuth angle to the ear.
For other speaker arrangements such as the 5.1 and 7.1 the SPCAP (Speaker-Placement Correction Amplitude) algorithm is implemented.
</member>
<member name="pitch_scale" type="float" setter="set_pitch_scale" getter="get_pitch_scale" default="1.0">
The pitch and the tempo of the audio, as a multiplier of the audio sample's sample rate.