Quality questions about A2DP & AVRCP
Quality questions about A2DP & AVRCP
- Subject: Quality questions about A2DP & AVRCP
- From: Gordon Rankin <email@hidden>
- Date: Fri, 18 Jan 2013 11:03:57 -0500
- Organization: Wavelength Audio, ltd.
- X_cmae_category: 0,0 Undefined,Undefined
Gang,
I am looking to get information on the best quality of audio output I
can get from Bluetooth. I know the codec has a lot to do with it, but I
am looking even further than that.
So I am designing a A2DP sink with an AVRCP source.
~~~
Volume control? In general all digital volume controls will reduce the
resolution of each sample so I am wondering... do I signal the A2DP
source with AVRCP to make the volume = 100% will that result in the best
data available at my A2DP sink? Digital volume controls in the source
will basically multiply the float32 sample with the digital volume
percent to create the new sample. But since we get fixed point samples
at the endpoint this basically means we loose resolution if the volume
control is set to something other than 100%.
I can control the actual volume in the analog domain which will result
in the best support of the digital samples.
Or is there some other way of handling this?
Thanks,
Gordon
--
J. Gordon Rankin
Owner and Chief Scientist
====== Wavelength Audio, ltd ======
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