User's Manual

TITLE:
Product Specification for HS-W1
Revision:
001
Date:
11/30/2011
Prepared by:
Approved by:
Page: 14 of 18
本文件為美律實業股份有限公司專有之財產，非經書面許可，不准透露或使用本資料，亦不准複印，複製或轉變成任何其他形式使用。
The information contained herein is the property of Merry and shall not be distributed reproduced, or disclosed in whole or in part without prior written
permission of Merry.
4.2.10 Echo performance
The test signal level shall be -18.2 dBDrms. The TCLw is calculated according to ITU-T
Recommendation G.122 [8], annex B, clause B.4 (trapezoidal rule). For the calculation the
averaged measured echo level at each frequency band is referred to the averaged test signal
level measured in each frequency band. The length of the test signal shall be at least one
second (1,0 s).
TCL
W
> 30 dB