Emulator

May be related to other static issues, such as issue 6955

Well this is different. Luigi's Mansion (GLME01) has two bursts of static during the Music Sheets battle. They always occur in the exact same places in the loop, and while the two different Bzzts sound different, the same Bzzt repeated sounds exactly the same as the previous time it was played.

Audiodump - http://www.mediafire.com/listen/hdq6v5yh9ax17yg/Luigi's_Mansion_Music_Sheets_BZZT.mp3

Curiously, this only occurs with DSP LLE (both official roms and Dolphin provided roms). DSP HLE, before or after the recent Zelda-Ucode-HLE changes, doesn't exhibit this issue. I tested all audio backends available on windows machines, and the pattern was completely consistent. LLE has the Bzzt, HLE doesn't.

To reproduce, load the GCI file below. Head through the double doors on the first floor, go right, then down the hall, then left, and enter the first door. If you get lost just press the Y button - it's the door with the key floating over it on the map. Turn on all the instruments, answer her question, and then you'll do battle with her "Music Sheets". That's the music with the bzzt.

GCI - http://www.mediafire.com/download/dq289wm7pon8z54/GLME_LUIGI_MANSION_SAVEDATA_v3.7z

Tested Revisions:
4.0 win64 - LLE Bzzt, HLE no Bzzt
4.0-1302 win64 - LLE Bzzt, HLE no Bzzt
4.0-1340 win64 - LLE Bzzt, HLE no Bzzt

Tested on System:
Windows 7 x64
Core i5 3570K @ 4.7ghz
Nvidia GeForce GTX 760
Asus Xonar Essence STX PCIe