7.2 Set Send Gain path .......................................................................... 23
7.3 Echo/doubletalk performance ................................................................ 23
8 Tuning procedures ............................................................................... 24
8.1 Objecve measurement ..................................................................... 24
8.2 Receive Path tuning ......................................................................... 24
8.2.1 Load Preset Parameters .............................................................. 24
8.2.2 Packet Loss Concealment ............................................................. 25
8.2.3 Receive AGC ........................................................................ 25
8.2.4 SPKR Gain .......................................................................... 26
8.3 Send Path tuning ........................................................................... 29
8.3.1 MIC Gain ........................................................................... 29
8.3.2 Send AGC ........................................................................... 30
8.3.3 Send Noise Suppression (includes Wind Noise Reducon) .................................32
8.3.4 Acousc Echo Canceller .............................................................. 34
8.3.5 Non-linear Processing ................................................................ 36
8.3.6 Howling Control ..................................................................... 37
8.3.7 Comfort Noise ...................................................................... 38
9 Fine-tuning ...................................................................................... 39
9.1 Receive Path ne tuning ..................................................................... 39
9.1.1 Seng minimum speaker gain loudness ................................................ 39
9.1.2 Receive AGC ........................................................................ 39
9.1.3 Receive EQ ......................................................................... 40
9.1.4 Clipper ............................................................................. 40
9.1.5 Auxiliary Stream Mix ................................................................. 41
9.2 Send Path ne tuning ....................................................................... 42
9.2.1 Send EQ ............................................................................ 42
9.2.2 Send AGC ........................................................................... 42
10 Advanced tuning ................................................................................ 43
10.1 Advanced tuning features .................................................................. 43
10.1.1 Noise-Dependent Volume Control .................................................... 43
10.1.2 Adapve EQ (AEQ) .................................................................. 44
10.1.3 AEQ with high frequency emphasis or expansion ....................................... 49
Document references .............................................................................. 52
Terms and denions .............................................................................. 53
Qualcomm cVc™ BCSW-CVC-HF-4-8-2 1-mic HF Tuning Guide Contents
80-CF056-1 Rev. AA Confidential and Proprietary – Qualcomm Technologies International, Ltd.
MAY CONTAIN U.S. AND INTERNATIONAL EXPORT CONTROLLED INFORMATION
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