Bluetooth HUs - audio quality?

devarshi84 · 19th February 2009, 03:55

Motorola recently did some innovation with Bluetooth Audio called HD bluetooth Audio.

I have their Motorola S9 bluetooth headset which is now replaced by S9-HD.

Motorola MOTOROKR S9-HD Bluetooth Stereo Headset - Mobile Tech Review

the motorola page on the same is not opening up. Maybe we can expect the same in cars pretty soon.

santosh.s · 9th April 2009, 01:32

If following site is to be believed, SBC used as the mandatory codec for A2DP has quite a good potential.
Audio quality of encoders at 320 kbit/s - SoundExpert
If used at 370+ kbps, it should be comparable to mp3 or aac @320kbps. Even at 328kbps, it is close to mp3@192kbps. A glance at A2DP 1.0 specs indicated that SBC must be supported at upto 512kbps/stereo by the "sink" device. But the spec is very liberal towards "source" devices, which are allowed to support only one possible bitrate (which can be mono as well

), which may or may not really deserve (IMHO) to be called "advanced" audio streaming. So, in many bad reviews about A2DP SQ, looks like source devices must have been culprits, not sinks. Those may not support high enough bitrates due to computational power, battery life demands (just a guess).

Also came across a few people being able to stream music even without A2DP capability, including a case in this thread as well. Looks like that is done through "handsfree" or "bluetooth audio" which is nothing but the speech codec used for phone conversations. Obviously, SQ can not be expected anything better than "miserable" in these cases!

phamilyman · 13th May 2009, 07:54

So which system is preferable. I saw a Sony (gasp!) system in BLR installed in a friend's car for 10k B/w incl two sets of coax.

Which are the other budget (~8-12k) BT models?

panky12345 · 13th May 2009, 09:14

Quote:

Originally Posted by phamilyman

Which are the other budget (~8-12k) BT models?

Whatever.. but I will NOT let you buy Sony!

phamilyman · 13th May 2009, 15:07

lol, else there's an action shoe coming my way?

so tell me some alternatives, no?

panky12345 · 13th May 2009, 15:25

Quote:

Originally Posted by phamilyman

lol, else there's an action shoe coming my way?

so tell me some alternatives, no?

sure.. budget please!

santosh.s · 13th May 2009, 15:39

Quote:

Originally Posted by panky12345

sure.. budget please!

Isn't it mentioned in the same line to which you initially replied?

panky12345 · 13th May 2009, 16:29

santosh: what I meant was that the above budget is for everything or just the HU?

phamilyman · 13th May 2009, 16:55

just HU sarkar!
12k mein bacche ki jaan lawanga?

19th February 2009, 03:55	#16
devarshi84 Senior - BHPian Join Date: Jun 2005 Location: Ahmedabad - Tor Posts: 4,024 Thanked: 211 Times View My Garage	Motorola recently did some innovation with Bluetooth Audio called HD bluetooth Audio. I have their Motorola S9 bluetooth headset which is now replaced by S9-HD. Motorola MOTOROKR S9-HD Bluetooth Stereo Headset - Mobile Tech Review the motorola page on the same is not opening up. Maybe we can expect the same in cars pretty soon.
	() Thanks

9th April 2009, 01:32	#17
santosh.s Senior - BHPian Join Date: Aug 2005 Location: Bangalore Posts: 1,077 Thanked: 70 Times View My Garage	If following site is to be believed, SBC used as the mandatory codec for A2DP has quite a good potential. Audio quality of encoders at 320 kbit/s - SoundExpert If used at 370+ kbps, it should be comparable to mp3 or aac @320kbps. Even at 328kbps, it is close to mp3@192kbps. A glance at A2DP 1.0 specs indicated that SBC must be supported at upto 512kbps/stereo by the "sink" device. But the spec is very liberal towards "source" devices, which are allowed to support only one possible bitrate (which can be mono as well), which may or may not really deserve (IMHO) to be called "advanced" audio streaming. So, in many bad reviews about A2DP SQ, looks like source devices must have been culprits, not sinks. Those may not support high enough bitrates due to computational power, battery life demands (just a guess). Also came across a few people being able to stream music even without A2DP capability, including a case in this thread as well. Looks like that is done through "handsfree" or "bluetooth audio" which is nothing but the speech codec used for phone conversations. Obviously, SQ can not be expected anything better than "miserable" in these cases!
	() Thanks

13th May 2009, 07:54	#18
phamilyman Senior - BHPian Join Date: Jul 2007 Location: Gurgaon Posts: 5,968 Thanked: 4,642 Times	So which system is preferable. I saw a Sony (gasp!) system in BLR installed in a friend's car for 10k B/w incl two sets of coax. Which are the other budget (~8-12k) BT models?
	() Thanks

13th May 2009, 15:07	#20
phamilyman Senior - BHPian Join Date: Jul 2007 Location: Gurgaon Posts: 5,968 Thanked: 4,642 Times	lol, else there's an action shoe coming my way? so tell me some alternatives, no?
	() Thanks

13th May 2009, 16:29	#23
panky12345 Senior - BHPian Join Date: Mar 2006 Location: New Delhi Posts: 2,697 Thanked: 171 Times	santosh: what I meant was that the above budget is for everything or just the HU?
	() Thanks

13th May 2009, 16:55	#24
phamilyman Senior - BHPian Join Date: Jul 2007 Location: Gurgaon Posts: 5,968 Thanked: 4,642 Times	just HU sarkar! 12k mein bacche ki jaan lawanga?
	() Thanks