ACCO Brands 33406 Manual Do Utilizador
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Address :18F, No. 951, Chung-cheng Rd., Chung Ho City,
Taipei Hsien,Taiwan, R.O.C.
Tel : 886-2-8227-5069 ,
Fax: 886-2-32344064
J-Three International Holding Co., All Rights Reserved. J-Three may make
changes to specifications and descriptions at any time without prior notice.
changes to specifications and descriptions at any time without prior notice.
2.5 Acoustic Echo Cancellation
Test Procedure:
1. Play sample wave file to simulate far-end talking condition. Refer to sample.wav
2. Record voice to simulate echo/non-echo condition for far-end. Refer to
L_AECoff-R_AECon.wav
3. Use cool edit to measure echo cancellation performance. Target: 45dB
4. Turn off AEC (Acoustic Echo Cancellation) parameters of DSP and record its condition @ left
channel. * echo will be recorded
5. Turn on AEC (Acoustic Echo Cancellation) parameters of DSP and record its condition @
right channel. * echo will be cancelled
6. Compare dB difference for performance of acoustic echo cancellation.
Picture of sample.wav