Ray producing weird electronic synthesizer tones from 5.1

That’s odd, since the connection between the TV and the Ray is an optical connection, and not easily interfered with by radio interference. It suggests perhaps an issue in the TV set, where it is sending an odd signal.

As a precaution, I would unplug both the TV set and the Sonos Ray from power for at least two minutes. Plug the TV back in first, and check for software/firmware updates, and apply them as necessary. Finally, plug the Ray back in to power, and check in your controller for updates and apply them, if any, as well. 

The real challenge is that this seems to be appearing on only Netflix, according to your post. Sonos has absolutely no idea where an optical signal is being generated from, it’s a one way transmission. There is nothing in the optical stream to identify ‘this is Netflix’ or ‘this is an X TV set’, it is only ‘this is a 5.1 signal’. 

If my previous post doesn’t help, you may want to reach out to the manufacturer of this TV set, or even Netflix, with more specific data. 

@Relwofa, 

I have a Ray with surrounds & sub-mini and have not noticed this, do you have any examples from Netflix Shows/Movies (approx. times) that I and others can maybe check-out too?

I’m using an LG TV with the setup here, but what TV are you using and is the audio source a TV built-in Netflix App, or is the App on an external HDMI connected device, like Fire TV, Google TV or Apple TV etc? If it’s on an external device, then try setting the TV’s Digital Sound Out format sent to the optical port as ’bitstream’ / ‘pass-through’ rather than having the TV perhaps trying to transcode the audio before passing it onto the Ray.

@Airgetlam thanks I’ll give that a go and report back.

@Ken_Griffiths examples have been anything really with loud musical elements. A good example which really highlighted it for me were two particular sections of ‘Peter Rabbit 2’ - the music during a wedding scene bust up at the beginning and then the ‘Ting Tings’ “that’s not my name” about half way through which was so bad I had to stop the film and play the track on Spotify for a comparison. 
 

TV is new and is an 55”AU7100 Samsung… UE55AU7100.

It has two options in the expert audio settings for Audio out where optical is concerned: ‘Auto’ and ‘PCM’. It was set to Auto.

@Relwofa,

So was it a built-in Netflix App or an external device - is there not this option on your TV which I came across in an online Samsung user manual… 

@Relwofa,
At what time in the movie is the ‘ting tings - that’s not my name’ track? Ah it’s okay I’ve found it - 27m 30s if anyone else decides to test this too.

Again it all sounds fine to me. I’ve done a mobile recording and will see if I can find a way to post it here.

Not sure if this will work, but here’s a link to a mobile recording of what is outputted from the Ray here, which sounds fine to my ears… (apologies that the quality of the recording is not the best but hopefully you can hear it’s okay)… note there’s a hairdryer being used in the movie scene too - but just listen to the music in the background, which I think doesn’t have any issue. 

http://www.sndup.net/bqky

@Relwofa, 

Maybe try the Ray with a different TV, that’s if you have one conveniently available, or maybe try adjusting the Ray EQ settings, or switching Trueplay off/on to see if that helps - in my own ‘quick’ test above, I left the Ray EQ controls at their default settings and Trueplay was enabled. FYI.