Specify the volume to amplitude curve#109
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kahrendt
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Jun 30, 2026
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Volume is defined as perceived loudness but the spec named no recommended curve. Clients SHOULD now convert volume with
amplitude = (volume / 100)^1.5(as was already used in many implementations likesendspin-cpp,aiosendspin, andsendspin-rs).It is deliberately a SHOULD instead of a MUST because desktop clients often use the OS mixer whose exact perceptual curve is opaque or not controllable.
Part of #94.