Multiroom Audio Sync

[Witterings]

How does the Auto Sync feature for multiroom work ... In one room I have a Pro plugged into an optical in on a Bluesound Node working as a preamp, the Node is using the Suwoofer out to a Bluesound Wireless Sub .... Due to the wireless latency the Node introduces a delay to the main L/R RCA out channels so they're all lip synced.
In the other room I'm using Coax out into my amp, the DAC in the amp also introduces a degree of latency but possibly not as much as the Node does to account for the Wireless sub.
Is it possible to get the 2 rooms to Lip Sync, if I click on one the of the WiiMs and go to it's autosync they're way out.

 

[BMeek]

You should describe the role and model of each WiiM device in your setup and state what you're trying to accomplish with them.

I'm literally guessing that you've got a Pro and something else acting as streamers in two rooms, each feeding a digital stream to a sound system in that room. Are you using the two wiim devices to form a speaker group, with the hope that they will bring your two discrete systems into perfect audio time sync?

You want to run the auto sync process using the WiiM Home app on each wiim device so that it learns the latency of its downstream audio path. From there, you initiate the speaker group link from the more powerful and best-network-connected wiim device. When you then play to the master/leader of that speaker group, the two systems should begin playing simultaneously with proper time alignment. Your latency will be the lengthier of your stereo's, plus ~800ms or so of WiiM Group Audio Delay (by default). If you're hoping to have lip sync with a video screen at the source, you'll need to hope the TV or Video streamer knows how to measure and wait for the audio latency before displaying the video. There is also a WiiM "low latency mode" for the Group Delay (Device -> Settings Audio Input > Group Audio Delay). I've played with this, and on my quality/properly-configured WiFi-6 network I found that both 70 and 150ms Group Delay modes would drift out of sync and hiccup periodically depending on WiFi load fluctuations. Since I'm not concerned about video and lip-sync, I just went back to default 800ms and the two overlapping audio room/zones were playing in decent sync to my ears.

Note that I was able to connect BOTH of my WiiM devices in this speaker group (an Ultra and a Pro using different DAC + power amps) to my router via Ethernet wires, and I'm now able to run the Speaker Group with an HDMI source to the Ultra at a Group Audio Delay of 70ms without audible gaps or issues. I put the Group Delay value back to the default because I don't need the low latency for proper time alignment without video.

 

[Wiimer]

How does the Auto Sync feature for multiroom work ... In one room I have a Pro plugged into an optical in on a Bluesound Node working as a preamp, the Node is using the Suwoofer out to a Bluesound Wireless Sub .... Due to the wireless latency the Node introduces a delay to the main L/R RCA out channels so they're all lip synced.
In the other room I'm using Coax out into my amp, the DAC in the amp also introduces a degree of latency but possibly not as much as the Node does to account for the Wireless sub.
Is it possible to get the 2 rooms to Lip Sync, if I click on one the of the WiiMs and go to it's autosync they're way out.

Set the Pro connected to the Node as the leader device, create a WiiM group, and run the Pro's Auto-sync. If that doesn't work, try performing a Manual-sync on the Pro.

 

[Witterings]

You should describe the role and model of each WiiM device in your setup and state what you're trying to accomplish with them.

As you say, could have provided more info .... They're both WiiM Pros, I've set them as a preferred speaker group in Alexa linked to one Echo Dot, selecting each one individually to add them to the group so if I give the voice command Alexa play ... it goes to the grouped WiiMs

This has worked well in the past, what's changed from when it was working, the Node has been moved from Lounge to Kitchen and I've now added the Sub to the kitchen setup.

Kitchen used to be WiiM Pro straight into amp via RCA

Lounge used to be WiiM Pro into Node via Optical, into external DAC via USB into amp via RCA.

Kitchen is now WiiM Pro via optical into Node then RCA out to amp using the Node's DAC and have added the wireless Sub which introduces a delay.

Lounge is now WiiM Pro into the amp via Coax so using the amps DAC.

 

[Wiimer]

As you say, could have provided more info .... They're both WiiM Pros, I've set them as a preferred speaker group in Alexa linked to one Echo Dot, selecting each one individually to add them to the group so if I give the voice command Alexa play ... it goes to the grouped WiiMs

This has worked well in the past, what's changed from when it was working, the Node has been moved from Lounge to Kitchen and I've now added the Sub to the kitchen setup.

Kitchen used to be WiiM Pro straight into amp via RCA

Lounge used to be WiiM Pro into Node via Optical, into external DAC via USB into amp via RCA.

Kitchen is now WiiM Pro via optical into Node then RCA out to amp using the Node's DAC and have added the wireless Sub which introduces a delay.

Lounge is now WiiM Pro into the amp via Coax so using the amps DAC.

Are you playing in an Alexa group instead of a Linkplay group? If so, Audio-sync in the WiiM app will not work.

If you create a group in the WiiM app and set the leader device as the Echo music speaker, the WiiM app's Audio-sync feature will work.

 

[Witterings]

Are you playing in an Alexa group instead of a Linkplay group? If so, Audio-sync in the WiiM app will not work.

If you create a group in the WiiM app and set the leader device as the Echo music speaker, the WiiM app's Audio-sync feature will work.

Yes as an Alexa group, I'll try the other way!