I’ve been chasing a somewhat ghost issue recently. I have the following chain
Spotify > Macbook > Audioengine B1 Bluetooth to Optical > Gain Cell DAC > PS 300 > Speaker.
Recently I experienced two episode of sudden white noise “attacks”. Because of the lack of data points, I couldn’t identify where in the chain might cause the problem. These white noise attacks last around 5 seconds and it sounds like a full blown loud white noises at constant volume while Spotify is playing music at moderate volume. The attack has a very clean cut start and clean cut ending. The white noise sounds extremely loud but my ear doesn’t ring or feel damaged afterward but when it happened my heart beat will go up probably to 120bpm from 80bpm instantly due to the jump scare type of thing. I really wish I have more clues but I need some help so I could sleep better.
Weirdly enough, the trigger of this white noise seems to be related to the act of starting a song by clicking a button. However, what I don’t understand is the system outputs at very low volume controlled by the GCD (I always make macOS and Spotify volume at 100%), therefore it doesn’t seem quite possible that macOS can push out a signal that is higher than the max signal it is outputting already.
After these bursts, the system appear to be performing perfectly fine. In terms of my order of suspicion, this is what I think
- Something to do with macOS software
- Something to do with the amp
- Something to do with the bluetooth to optical transmitter
- Something to do with the dac
- Something to do with the cable connection
- Something to do with my home power line
Does anyone have experience dealing with sudden white noise attack? I also want to understand if it has something to do with the amp or DAC component, what type of failure is this and if it this is even theoretically fallible. Thank you.