Two different sticks- one in an LG Smart TV USB port, one in a Yamaha Receiver with Samsung Smart TV. Only on DStream (ATT) and a few channels like ESPN, ABC, Hallmark we get either a quick high pitched sound, lowering audio, loss of audio, or static audio. Audio issues do not happen on Netflix, HULU, or other streaming networks.
Can you please provide us the following information:
-Roku device model, serial number, device ID, and software OS/version (these can all be found in Settings > System > About)
-does this issue occur on a specific channel? if so, what channel and what version/build is the channel (this can be found be selecting the channel on the Home screen and pressing the * button)
-tracker ID when this issue occurs (when you see this issue occur, press the Home button 5 times, followed by the Back button 5 times)
-steps to reproduce the issue you are seeing
With more detailed information, we will be able to assist you further.