Audio Stream, Music Play from mobile via SoC

RE: Audio Stream, Music Play from mobile via SoC

Yatekii — Sat, 10 Sep 2016 22:44:58 GMT

Hey, I am digging into the same topic. My question is: If data rates are too low, how does audio over Bluetooth work at all then? Makes no sense to me :S

RE: Audio Stream, Music Play from mobile via SoC

Øyvind Karlsen — Mon, 25 Apr 2016 06:29:04 GMT

The limitation is in BT4.2. You sacrifice some data rate for serviceability and other features, so the data rate is a little higher in the physical layer.

RE: Audio Stream, Music Play from mobile via SoC

BodyBeacon — Thu, 21 Apr 2016 15:22:19 GMT

If 150kbps is the maximum, what would you say is the typical data rate, and does it differ from nRF51 to nRF52, or is it a BT4.2 limitation?

Additionally, is there any difference on the maximum data rate in physical layer and application layer (I understand that data is eaten as the information travels up the layers)? - I read somewhere that the bottleneck is in the application layer.

RE: Audio Stream, Music Play from mobile via SoC

Øyvind Karlsen — Wed, 15 Jul 2015 07:39:57 GMT

Hi,

Unfortunately the data rates for BLE are too low to comfortably send high quality audio, the maximum datarate is currently about 150kbps, while a 44,1kHz 16bit audio signal(CD quality) takes about 770kbps per channel, that means 1500kbps for stereo.

Best regards,

Øyvind