Comments on: A2DP: The state of Stereo Bluetooth Technology http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/ BlackBerry News and Reviews You Can Use Sat, 11 Feb 2012 20:32:42 +0000 hourly 1 http://wordpress.org/?v=3.3.1 By: wlan netzwerk http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-49018 wlan netzwerk Sun, 21 Mar 2010 19:36:52 +0000 http://www.berryreview.com/?p=26740#comment-49018 I think I will get a Samsung NC10, it looks really great and has good specs. Or does anybody know a notebook with similar specs? I think I will get a Samsung NC10, it looks really great and has good specs. Or does anybody know a notebook with similar specs?

]]> By: Rob http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-31989 Rob Thu, 08 Oct 2009 23:40:56 +0000 http://www.berryreview.com/?p=26740#comment-31989 I have just bought the Sony DR-BT21 A2DP headphones (also sold as DR-BT21ik which comes with a bluetooth iPod dongle). I don't think it is as well known as other headphones but it has good reviews. They are neckband style heaphones that fold down into a nice little package and have volume and track control buttons as well as the standard multi function headset button. The audio quality is great, I paired it to my iPhone 3G which now supports A2DP and it was up and running in seconds, I also took a call which was very clear and the other person had no trouble hearing despite the mic being on the right earpiece. The previous/next track button is the only thing that doesn't work on the iPhone because Apple implemented only part of the AVCRP protocol (play/pause/stop). Using the iPod dongle all features work as it's relaying the commands through the dock connector but it's less elegant. With my Samsung NC10 running Windows 7 I was up and running in about a minute, I simply paired it and Windows contacted Windows Update for the drivers. The netbook has a Broadcom chipset and uses the WIDCOMM software which installed an iTunes control utility when installing the headset, it allows all of the headset buttons to work with iTunes. It works perfectly under Windows 7, as soon as it detect the headset it switches all audio to it, I'm not sure if that is new in Windows 7 or if it's in Vista too (I didn't keep Vista around long enough to find out). Regarding your comments about signal loss, I think the actual transmitting device is as much to blame as the headphones. I've tested my heaphones with an iPhone 3G, a Samsung NC10 netbook and a USB bluetooth dongle. The phone and netbook could easily keep a signal at up to 10 meters, the USB dongle struggled at even 1 meter due to it's tiny antenna etched on the circuit board. Also remember that A2DP is using more bandwidth than the standard headset profile so it's going to be more susceptible to dropouts in poor signal quality. Overall I'm very impressed with A2DP, especially when you have good support in the modern operating systems and latest smart phones. I have just bought the Sony DR-BT21 A2DP headphones (also sold as DR-BT21ik which comes with a bluetooth iPod dongle). I don’t think it is as well known as other headphones but it has good reviews. They are neckband style heaphones that fold down into a nice little package and have volume and track control buttons as well as the standard multi function headset button.

The audio quality is great, I paired it to my iPhone 3G which now supports A2DP and it was up and running in seconds, I also took a call which was very clear and the other person had no trouble hearing despite the mic being on the right earpiece. The previous/next track button is the only thing that doesn’t work on the iPhone because Apple implemented only part of the AVCRP protocol (play/pause/stop). Using the iPod dongle all features work as it’s relaying the commands through the dock connector but it’s less elegant.

With my Samsung NC10 running Windows 7 I was up and running in about a minute, I simply paired it and Windows contacted Windows Update for the drivers. The netbook has a Broadcom chipset and uses the WIDCOMM software which installed an iTunes control utility when installing the headset, it allows all of the headset buttons to work with iTunes. It works perfectly under Windows 7, as soon as it detect the headset it switches all audio to it, I’m not sure if that is new in Windows 7 or if it’s in Vista too (I didn’t keep Vista around long enough to find out).

Regarding your comments about signal loss, I think the actual transmitting device is as much to blame as the headphones. I’ve tested my heaphones with an iPhone 3G, a Samsung NC10 netbook and a USB bluetooth dongle. The phone and netbook could easily keep a signal at up to 10 meters, the USB dongle struggled at even 1 meter due to it’s tiny antenna etched on the circuit board. Also remember that A2DP is using more bandwidth than the standard headset profile so it’s going to be more susceptible to dropouts in poor signal quality.

Overall I’m very impressed with A2DP, especially when you have good support in the modern operating systems and latest smart phones.

]]> By: David http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-31644 David Wed, 30 Sep 2009 20:02:44 +0000 http://www.berryreview.com/?p=26740#comment-31644 That is definitely a good point. Especially since the tag sits lower and is closer to the phone/iPod. But I focused on full headsets for the review, not receivers that allow you to plug in your own earphones. Another big difference between the tag receiver and the full fledged BT headphones is the wires. Still having wires go into your ear almost makes the BT headphones pointless. You might as well just use a tiny iPod shuffle as a tag. That is definitely a good point. Especially since the tag sits lower and is closer to the phone/iPod. But I focused on full headsets for the review, not receivers that allow you to plug in your own earphones. Another big difference between the tag receiver and the full fledged BT headphones is the wires. Still having wires go into your ear almost makes the BT headphones pointless. You might as well just use a tiny iPod shuffle as a tag.

]]> By: David http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-31643 David Wed, 30 Sep 2009 19:59:32 +0000 http://www.berryreview.com/?p=26740#comment-31643 Youch, thanks for pointing that one out...I guess I should write these earlier in the day :) Youch, thanks for pointing that one out…I guess I should write these earlier in the day :)

]]> By: Matt http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-31628 Matt Wed, 30 Sep 2009 16:48:49 +0000 http://www.berryreview.com/?p=26740#comment-31628 The saying is "my two cents." Just sayin'.... The motorola S9 is a great sounding headset. It doesn't match wired quality, but is acceptable for talk or music in a active/workout environment. The saying is “my two cents.” Just sayin’….

The motorola S9 is a great sounding headset. It doesn’t match wired quality, but is acceptable for talk or music in a active/workout environment.

]]> By: DavidB http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-31601 DavidB Wed, 30 Sep 2009 12:45:45 +0000 http://www.berryreview.com/?p=26740#comment-31601 They need only as much range as the wired stereo headset they are replacing. Asking for more is asking for compromising of battery life and/or size. Besides, these things receive. If the audio is dropping out, that's more likely the fault of the transmitting device (phone) than the headsets? I dont get dropouts on my BB music gateway with either 9530 or 9630 so I'm wondering what was wrong with your testing setup? BT easily ranges 30 feet or more. They need only as much range as the wired stereo headset they are replacing. Asking for more is asking for compromising of battery life and/or size.
Besides, these things receive. If the audio is dropping out, that’s more likely the fault of the transmitting device (phone) than the headsets? I dont get dropouts on my BB music gateway with either 9530 or 9630 so I’m wondering what was wrong with your testing setup? BT easily ranges 30 feet or more.

]]> By: roid http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-31596 roid Wed, 30 Sep 2009 11:59:28 +0000 http://www.berryreview.com/?p=26740#comment-31596 I'm sure you're aware of the existence of small bluetooth headphone receivers that let you use earbuds such as the Jabra BT3030? Granted, the whole 'dogtag' look isn't for everyone but who says you need to wear it in full view? When working out I clip it to an armband or my waistband. When in transit I stick it in my shirt pocket or clip it to my shirt, facing in. I’m sure you’re aware of the existence of small bluetooth headphone receivers that let you use earbuds such as the Jabra BT3030?

Granted, the whole ‘dogtag’ look isn’t for everyone but who says you need to wear it in full view? When working out I clip it to an armband or my waistband. When in transit I stick it in my shirt pocket or clip it to my shirt, facing in.

]]> By: ydaraishy http://www.berryreview.com/2009/09/30/a2dp-the-state-of-stereo-bluetooth-technology/#comment-31594 ydaraishy Wed, 30 Sep 2009 09:45:26 +0000 http://www.berryreview.com/?p=26740#comment-31594 Regular mono non-A2DP headsets do quite well as wireless headphones too -- certain headsets produce really good audio -- and they let you be aware to the world in one ear, and let you listen as well. Regular mono non-A2DP headsets do quite well as wireless headphones too — certain headsets produce really good audio — and they let you be aware to the world in one ear, and let you listen as well.

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