Hi. I have WS2801 LEDs in Bullet Pixel enclosure (like those: https://www.pcboard.ca/ws2801-bullet-pixel-insulated.html) and when they are on then emit low chirping sound / noise. Even without any signal from hyperion they have a tendency to do it. Does anyone has the same issue with WS2801 or is something wrong with my LEDs? Can it be connected to power supply that is providing power to them?