Sound emitters attached to avatar may flicker between surround channels while avatar is in motion.


Bug has been around a few alchemy versions. If You have a sound emitting source attached to your avatar that's near the threshold for front and rear channels it might flicker between those channels as you walk. This will create a strange sensation of it bouncing between those channels or flickering a little.

It might potentially be an idea to lock avatar attached sound emitters that are within a threshold distance of the first person camera to a single channel like center and keep it there.


Alchemy 3.8.3 (36586) (x64) Aug 28 2015 15:53:44 (Alchemy Test)
Release Notes

You are at 91.8, 75.1, 22.4 in Helvellyn located at (
(global coordinates 261,468.0, 256,075.0, 22.4)
Second Life Server
Release Notes

CPU: Intel(R) Core(TM) i7-4790 CPU @ 3.60GHz (3591.67 MHz)
Memory: 16324 MB
OS Version: Microsoft Windows 10 64-bit (Build 10240)
Graphics Card Vendor: NVIDIA Corporation
Graphics Card: GeForce GTX 760 (192-bit)/PCIe/SSE2

Windows Graphics Driver Version: 10.18.0013.5362
OpenGL Version: 4.5.0 NVIDIA 353.62

libcurl Version: libcurl/7.43.0 OpenSSL/1.0.2d zlib/1.2.8 WinIDN
J2C Decoder Version: OpenJPEG: 1.5.1
Audio Driver Version: FMOD Studio 1.06.07
Font Renderer: FreeType 2.6.0
Qt Webkit Version: 4.8.7 (version number hard-coded)
Voice Server Version: Vivox 4.6.0017.21209

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Packets Lost: 265/1,243,740 (0.0%)



Drake Arconis


Bellimora Resident



Fix versions

Affects versions