Windows 10: Windows 2004 breaks aptx low latency support

So i got around to upgrading to 2004 recently. Everything was smooth until i tried using my bluetooth headphones (Sennheiser MTW) with aptx ll support. When using the LL mode, the sound is now extremely distorted.

Also, the headphones are now named LE[headphone's name], which stands for Low Energy bluetooth. No idea if LE was enabled before but just not showing but on the previous update there was no LE in the name so maybe headphones working in low energy mode made the Low Latency feature break. I have no idea.

Currently I rolled back to the previous update and all works smoothly now, showing that the 2004 update is the culprit.

Any advice how to tackle the problem? Or how to disable the Low Energy mode?

submitted by /u/SlavPrincess
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:)

 

Support AptX Codec In lumia 650 and lumia 950 xl

If low latency is one of aptX properties, we can test with video playback, may we?

 

aptx on W10/ W10mobile

I read Microsoft community, and found the Windows 10 and W10mobile has no doubt to support Bluetooth aptx codec. https://msdn.microsoft.com/en-us/wi...delines/bluetooth?f=255&MSPPError=-2147217396

I try that success on W10 PC with aptx enabled dongle, sound really good and no delay during video playback.

however, it is a different story on phone.

- sound quality is less rich when comparing the same song same headset on aptx enabled PC and on the phone

- one of aptx feature low latency is not showing when I play video on Lumia 930 and Lumia 1520, ie, sound delay when playing video.

Another point is, aptx should be licensed from CSR to work. even the hardware is embedded. CSR shows device list which obtained aptx license, but I only find Lumia 630 in the website.

it makes me suspect whether aptx is really working on Lumia phone?

Wish someone from Microsoft can help to clarify. Thank you.

 

Support AptX Codec In lumia 650 and lumia 950 xl

That would not be a reliable test to confirm that aptX is active. Most modern headsets give low enough latency that there is no noticeable lag when for example playing a movie. I have only had problems with specific combinations recently: for example an
ASUS New PadFone Inifity with Samsung HS3000 (this headset supports aptX but the phone doesn't) gives terrible lag but there is no lag with same phone paired with a Sony SBH52 headset.