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Combined AV Headset Application
blab-ug-005Pa
© Cambridge Silicon Radio Limited 2005
This material is subject to CSR’s non-disclosure agreement.
Page 13 of 24
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Step 2: Building the MP3 decoder
Build the MP3 decoder application by opening the mp3_decode workspace and selecting build in xIDE. The
mp3_decode workspace can be built in exactly the same way as the sbc_decode workspace in section 5.1
Step 4.
Once the
mp3_decode application has been built go back to section 5.1 step 3 and continue with building the
av_headset_hfp application.
5.3 CVC echo cancellation and noise reduction software
To include CVC (Clear Voice Capture) echo cancellation and noise reduction simply add the define symbol
INCLUDE_CVC to the Project Properties / Define symbols field before building the av_headset_hfp.xiw
project.
Note: The CVC software is supplied for demonstration purposes only, is time limited and will become inactive after
processing data for five minutes.
The ParamMgr Utility can be used to fine tune the CVC code to optimise the performance based on the acoustic
characteristics of your product. Please see the ParamMgr User guide (CSR reference blab-ug-007Pa).
5.4 Restoring Factory Chip Settings
The factory settings can be restored using the PSTool application supplied with BlueLab v3.2.
To restore the factory default settings using PSTool:
1. Open the PSTool application.
Note: The
PSTool.exe can be found in the BlueLab install directory \tools\bin\PSTool.exe
The Choose transport dialog appears:
2. Select SPI BCCMD and LPT1 as the transport settings and click OK.