Audio Bluetooth Profiles

[shadowfiber]

Really hoping someone has some information on this:

I've been doing extensive reading on bluetooth profiles, and APT-X codecs on newer phones. Specifically the Galaxy S3. I currently own an iPhone 3GS that does not support APT-X. The quality of pandora streaming or any audio streaming through bluetooth is as expected; absolutely terrible.

My question is - does the device SOURCE, aka the GS3 provide the APT-X codec to be read to our cars?

Does anyone have an APT-X phone that has tried to the audio system? How does it sound?

Any information would be highly beneficial.

Thanks!

 

[Bcdad182]

Don't know a lot, but I have a GS3 and the bluetooth audio sounds fine when the phone is not in use. Sometimes it doesn't hang up properly and the music comes back in mono. You have to click the hangup button and then it comes back in stereo. GS3 doesn't support the ADP2 (I think that's correct) protocol so you can't shuffle music and get some of the more advanced features via bluetooth (like you can on an Apple) basically you can go track up/down play/pause and that's about it. Somewhat disappointing that I still continue to use my second generation iPod touch rather than my phone for music. Someone needs to come up with a hack for either the phone or car...or better yet and official update so they can speak the latest profiles together.

 

[shadowfiber]

I just found the following on the Mazda Service Site

Function

Profiles


A2DP 1.0/1.2 (Advanced audio distribution profile)


Sends/receives music or audio data.

AVRCP 1.0/1.3/1.4 (Audio/video remote control profile)


Sends/receives operation information.

HFP 1.0/1.5 (Hands-free profile)


Enables a call using a hands-free phone.

OPP 1.1 (Object push profile)


Phone book can be downloaded.

PBAP 1.0 (Phone book access profile)


Sends/receives phone book data.

Maximum number of devices can be registered


7

Devices can be used simultaneously


2

 

[shadowfiber]

A2DP is designed to transfer a uni-directional 2-channel stereo audio stream, like music from an MP3 player, to a headset or car radio.[1] This profile relies on AVDTP and GAVDP. It includes mandatory support for the low-complexity SBC codec (not to be confused with Bluetooth's voice-signal codecs such as CVSDM), and supports optionally: MPEG-1, MPEG-2, MPEG-4, AAC, and ATRAC, and is extensible to support manufacturer-defined codecs, such as apt-X. Some Bluetooth stacks enforce the SCMS-T digital rights management (DRM) scheme. In these cases, it is impossible to connect certain A2DP headphones for high quality audio.


Does this mean if a phone has APTX our cars WILL or WILL NOT read the APTX codec?