Observations on Bluetooth audio quality

asked 2014-10-02 18:28:50 +0200

406 ●10 ●19 ●21

updated 2014-10-05 19:01:59 +0200

I tested two Jabra devices with the Jolla.

Jabra Halo 2 headset: audio quality for music playback is sub-par. This headset works perfectly with two Macs, an iPhone 4S and an iPhone 5S but is below average with the Jolla.
Jabra BT-3030 headset adapter: this adapts wired headphones to bluetooth, contains a mic and remote controls. Works perfectly with the Jolla.

Since the BT A2DP profile specifies a variety of codecs, including one with DRM, I suspect that in (1) above, the Jabra Halo 2 connection is dropping down to a low performance codec. This may be a compatibility issue between the Halo 2 and Jolla.

Two more devices tested:

Jawbone Jambox. Music playback excellent.
Sony headset DR-BT22. Very good.

did not have time to test mic/remote.

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i have a nokia bh 212, quality is ok but not more. during phone calls ist too much bass, it scratches. volume keys dont work, 1 press to end call works

NuklearFart ( 2014-10-03 09:15:10 +0200 )edit

3

answered 2014-11-12 22:13:05 +0200

Matthias

1561 ●15 ●28 ●27

i'm using a bose a2dp headset, too. whenever the headset autoconnects to the jolla sound quality is really bad. but if i disconnect it from the settings menu by tapping the connected device abd then reconnect it by tapping the device again the sound quality improves significantly.

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1

That's actually a good clue to what might be happening.

During the connection establishment phase, the headset has negotiated itself into a low bitrate codec for phone calls.

I'll try the same steps with the Jabra Halo 2 and see what happens.

Sanjay Mehta ( 2014-11-13 10:33:18 +0200 )edit

@Matthias this is a really interesting finding. @Sanjay Mehta thanks for clarifying what might be happening in the process. Did you have the same result with your Jabra headset?

Neo ( 2015-07-17 15:23:35 +0200 )edit

I don't have my Jolla phones at the moment (travelling). Will try to check it out when I get back home. Haven't been logging in here recently either.

Sanjay Mehta ( 2015-10-19 13:16:01 +0200 )edit

@Neo @Matthias

I couldn't test with the Jolla as I'm still out of the country, but I did notice that the Jabra Halo 2 downgrades audio quality with my Mac when I switch the input from "Line In" to "Bluetooth Jabra Halo 2 Mic."

That means the headset's profile for phone calls is definitely downgrading the codec. Strangely that does not happen with the Jabra BT-3030 which has an onboard microphone as well. The latter is much older than the Halo 2.

Sanjay Mehta ( 2015-12-08 14:09:32 +0200 )edit

2

answered 2014-11-12 16:21:17 +0200

objectifnul

9370 ●150 ●203 ●224

My two pence (not headset related, but hi-fi) : just connected my Jolla to my Bang&Olufsen hi-fi system (both wired and bluetooth connections tested). Not only it's working seamlessly, but I can say the Jolla audio quality is far from ridiculous.

Little problem with MPEG codec (mp3) for narrowband signals (32 kbps): some unpleasant hiss can be heard from time to time, specially in speech content.

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answered 2015-11-07 22:34:05 +0200

yashvir
21 ●2 ●2 ●4

hi sanjay...read that u have all the 4 other halfs...if u r not using them then it would be kind of u to provide me with 1 or 2...ready to pay for the same...thanks...yashvir, jaipur

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