Static pop sound when changing channels

It's a common YMMV problem often with no solution, unfortunately. The audio signal gets briefly interrupted, and devices vary in how gracefully they handle it. The only time I was to able to solve it was when I switched a cable box to output 1080i at all times instead of whatever resolution the channel used. The Sony TV really hated the cable box switching between 720p, 1080i, 480i, etc.