Update April 15, 2014: Since installing the new Windows Phone 8.1 update today, there is no change to this - still broken.
I have a Nokia Lumia 920 and Nokia Lumia 1020. Since installing the new Nokia Lumia Black update on my two phones, AAC+/HE-AAC internet radio stations no longer play in stereo and play in mono only. This problem occurs on both of my phones, using the built in browser (Internet Explorer) or any internet radio app e.g. Radyo or TuneIn and occurs any HE-AAC stream that uses the Parametric Stereo and SBR extensions. Internet Explorer on Windows Phone also plays HE-AAC streams in mono, this site
Jack FM plays audio in mono direct from the built in Windows Phone browser itself which is baked into the operating system.
TIP: Use ear phones to easily hear Stereo Vs Mono.
As a test: To compare, I have listed the station stream URLs here. If you own a Nokia Lumia and have the black update as a minimum,
test it yourself install the
Radyo app which lets you add custom URLs for internet radio and use a pair of ear phones which will enable you to hear the difference between mono or stereo in an instant.
These HE-AAC streams play in Stereo
These HE-AAC streams play in Mono (After the installation of the Nokia Lumia Black update)
These are just a few examples, but after the black update it seems that native (hardware) support for the HE-AAC Parametric Stereo and SBR extensions have been broken. I have a friend that uses a Nokia Lumia 920 phone in which I tested all of this, and I can confirm that the phone experiences the same issues as well.
As an easier test: It’s easier to tell the difference by using one source.
Triple J in Australia stream their audio over
MP3 and
HE-AAC at the same time.
Triple J's
HE-AAC stream 48Kbps (normally on Windows Phone) should sound the same (if not better) than their
MP3 stream of 96Kbps. If you add both of these stream URL’s to the Windows Phone
Radyo app in the custom section, then flick between the two, you should notice that the
HE-AAC stream is much much worse than the
MP3 Stream.
In contrast, if you listen to these streams on your computer, they sound practically the same quality wise.
Triple J - HE-AAC
Triple J - MP3
One of the primary reasons I switched to Windows Phone, I listen to internet radio all the time on the go and with the Windows Phone I can adjust the bass/treble with the built in equalizer, something that can't be done with iOS or Android devices at the operating system level.
Please note: this is not a problem solely with the Radyo app,
I am recommending the Radyo app only because you can add custom URL's with this app, something which you can't do with the TuneIn app for Windows Phone. the same symptoms occur using the built in Windows Phone browser.
Something which is even more interesting, if you play
Kiis 1065 Sydney using the built-in Windows Phone browser
Internet Explorer this plays in
stereo perfectly well. But if you play
Jack FM also using the built-in Windows Phone browser
Internet Explorer this plays the audio in
mono. I have also noticed that since the Black update FM radio plays all stations in mono as well - don't know if this is related, but I would have a guess that it is.
What is going on Microsoft? What did you do to break HE-AAC Parametric Stereo & SBR extension functionality for virtually all apps including web apps? Why are you being silent on this issue and not informing anyone about this issue?