Welcome to Esato.com




Bluetooth transfer speed not good for music?


Click to view updated thread with images




Posted by CYPER
I have read before that bluetooth as a technology is not good enough for transferring high quality sound. Is that true?

Can I expect crisp sound with no background noise or hiss and no dropouts from SE bluetooth products?

I've already tried one from Jabra and wasn't impressed at all.
But THIS, THIS or any of the HBH product line looks good on paper, but how does it perform?

Thank you for your time


Posted by NightBlade
Well, I've got the HBH-DS980 and I'm pretty much satisfied with the quality. Even paired with my trusty old K810, the sound output is fantastic!( although the lows could be a tiny bit louder)
I do not regret buying it at all. Also does a great job at cancelling background noise. Can't even hear the vac while I'm cleaning my room.
I suppose the IS800 are of similar, if not better quality.

Posted by CYPER

On 2008-11-19 22:26:26, NightBlade wrote:
Well, I've got the HBH-DS980 and I'm pretty much satisfied with the quality. Even paired with my trusty old K810, the sound output is fantastic!( although the lows could be a tiny bit louder)
I do not regret buying it at all. Also does a great job at cancelling background noise. Can't even hear the vac while I'm cleaning my room.
I suppose the IS800 are of similar, if not better quality.



Thank you very much for your post. That looks like a nice headset. Can you tell me if there is any background noise in between changing songs (when it is quiet)?
Also when fully charged how many hours of listening does it do?
Any cons with the headset?
Can I plug my own headphones in it?


Posted by CYPER
Anyone?

Posted by AbuBasim
I don't think hiss and noise is a common problem with all phones. I get a lot of that when playing music with my HTC TyTN (Hermes) paired with SE DS970. But no hiss or noise when pairing the same headset with either K770, P990 or G700.

The TyTN is a particularly bad example of how Bluetooth should work. To make the DS970 work well with skip-free streaming you need WM6, you have to edit the registry and apply a patch developed by one of the gurus at XDA-DEV but which has the drawback of putting a constant load on the CPU and therefor draining the battery in less than half a day.

One the other hand, if you have a Bluetooth 2.0 headset like the Nokia BH-500 paired with the TyTN then you don't need the patch but the audio quality is very poor, like 64 kbps MP3.


_________________
Souvenirs, novelties, party tricks.

[ This Message was edited by: AbuBasim on 2008-11-26 07:02 ]

Posted by myth®

On 2008-11-20 00:25:08, CYPER wrote:
Can you tell me if there is any background noise in between changing songs (when it is quiet)?
Also when fully charged how many hours of listening does it do?
Any cons with the headset?
Can I plug my own headphones in it?


I get around 1,5-2 hours of playback per charge and no, i haven't noticed any kind of noise between tracks.

No, you can't plug your own headphones, but the sound quality is great and close to that of my Sennheiser CX-300.

As for the cons, well, the charge could last a bit longer, but other than that it's very good and the sound quality during phone calls is superb too. Strongly recommended.

Posted by max_wedge
I use a2dp (bluetooth streaming) to my car stereo and it sounds better than the analog auxilary input and sounds no different than the digital usb input.

I also use it through the MBR-100 through headphones or through my stereo and it sounds fantastic. Not all OEM a2dp implementations use as good bandwidth as some, but SE happen to use enough bandwidth to play 320Kbps mp3 without any loss of quality.

You may rest assured SE bluetooth a2dp is more than adequate for great sounding audio streaming!

Posted by CYPER
Thank you everyone, but I'm really disappointed I can't use my own headphones Why on 3.5mm jack?

Posted by max_wedge
It comes down to the design of the A2DP dongle. If it doesn't support external headset's then you need to buy one that does.

For example, the MBR-100 let's you use your own headset.

http://www.sonyericsson.com/c[....]s/overview/mbr-100?cc=us&lc=en

Posted by CYPER
Bluetooth 1.2 is not fast enough for 320Kbps mp3 unfortunately

Posted by senninha
i use MBR-100 + sennheiser headset + eAAC+ files and the sound is just terrific

Posted by max_wedge

On 2008-11-28 23:33:53, CYPER wrote:
Bluetooth 1.2 is not fast enough for 320Kbps mp3 unfortunately

no you need bluetooth 2.0 device

Posted by CYPER

On 2008-11-29 01:59:19, senninha wrote:
i use MBR-100 + sennheiser headset + eAAC+ files and the sound is just terrific

Unfortunately all my songs are in mp3 format and many of them are in 320kbps format. What's the bitrate of yours in eAAC?

Posted by max_wedge
ah, mp3 format at 320Kbps will sound just fine Most of mine are between 256-320Kbps. I aim for 320 as often as possible.



Posted by CYPER
But MBR-100 is bt v1.2 device and can't support such high bitrate songs

Posted by max_wedge
bt 1.2 can support speeds of 721Kbps in practice. I have played 320Kbps MP3 through my MBR-100 without Skipping.



Posted by CYPER

On 2008-12-02 02:07:50, max_wedge wrote:
bt 1.2 can support speeds of 721Kbps in practice. I have played 320Kbps MP3 through my MBR-100 without Skipping.




So then this review is wrong?

http://sonyfanboy.wordpress.c[....]/sony-ericsson-mbr-100-review/

Posted by max_wedge
hmmm, if that's the case then thge mbr-100 uses SBC for bitrates above 192Kbps. 50% of my music is 192, the rest 256 and 320. Perhaps I need to listen closer. It would be a pity if the MBR doesn't utilise the full BT1.2 bandwidth to support full 320Kbps audio.

What's a plus, is that SE A2DP devices do actually support direct streaming of MP3 and AAC codecs (admitedly only up to 192Kbps it seems on the MBR100). Many A2DP devices use SBC for all audio regardless of bitrate. SBC re-encodes audio, costing cpu (therefore battery), skipping if CPU is over utilised in other areas (example browsing interent at the same time) and also apparently SBC quality is below that of MP3, but I've been googling and haven't found out just how good or bad SBC actually is.

I know that my MBR-100 sounds fine and I haven't noticed any painfully poor audio reproduction as yet.

The other thing about the review it mentions that performance will drop when used in a WLAN environment - but this is blatently untrue in my experience where it perfroms as well in my living roomo (WLAN environment) as it does in my car (no WLAN). So I'm not sure to trust other information in the review or not.

Nevertheless, I think it's possible that the MBR-100 does only support direct streaming up to 192Kbps. I'll definitely do some more listening....

Posted by max_wedge
Here's some info on the SBC codec: http://www.soundexpert.info/j[....]9/Bluetooth-audio-quality-A2DP

Most high quality SBC codec use is around 320Kbps.


Note: A2DP can support up to 512Kbps (regardless of the codec: SBC, MP3 or AAC).


Click to view updated thread with images


© Esato.com - From the Esato mobile phone discussion forum