Can you clarify exactly which services/circumstances are affected by these sound interruptions?
- OnDemand? Streaming apps - in which case, which ones? Live TV? Recordings? If live TV or recordings - can you be specific about which channels? (including SD/HD as appropriate)
You've referred to All-4, but the TiVo box doesn't have the All-4 app, so do you mean the standard OnDemand programmes that just have All-4 branding on them? The same question would apply to any references to "ITV Hub" and "my5". Or is it that you have a V6 and not a TiVo? Check here if you want to make sure.
Secondly, how is your TiVo's audio fed? Is it HDMI to a TV directly, or is any other A/V kit involved?
Have you tried toggling the PCM/Stereo setting to eliminate - Home > Help & Settings > Settings > Devices > Audio. PCM or stereo are the 2 options.
With these points clarified, we may be in a position to offer some further advice.
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