音频测试说明

qiujun · 发表于 2011-1-21 10:33:42

Ｒ＆Ｓ音频测试说明，需要的可以看看
【文件名】:11121@52RD_UPL-B9_1E.pdf
【格　式】:pdf
【大　小】:271K
【简　介】:Ｒ＆Ｓ音频测试说明
【目　录】:

                                          Acoustic Measurements on Mobile Phones

1    Overview

                                    The acoustic transmission and reproduction quality of a mobile phone is its
                                    most important characteristic in everyday use. The most visually appealing
                                    design or a wonderfully sophisticated operating concept are not much use,
                                    when the user cannot or can hardly understand what is being said at the
                                    other end.

                                    Instruments and methods for measuring acoustic characteristics are therefore
                                    essential tools for assessing the quality and suitability of a mobile phone.

                                    Special test mobile phones have so far been required for type-approval testing.
                                    The  special  Audio  Analyzer  UPL16  performs all audio measurements in line
                                    with chapter 30 of GSM 11.10 on special mobile phones under test with a digital
                                    audio interface (DAI).

                                    Since a digital audio interface is no longer required even for type-approval tests
                                    on 3rd generation mobile phones, new test methods had to be developed
                                    allowing to perform measurements via the air interface and the normal voice
                                    coder and decoder. The test signals have to simulate human voice in the
                                    frequency and time domain to be able to test the mobile phone in the normal
                                    operating mode with DSP assessment like VAD (voice activity detector), noise
                                    suppression, echo canceller and so on switched on.

                                    These tests are based on new standards for 3GPP mobile phones. The test
                                    methods are stipulated in 3GPP TS 26.132 and the values to be attained in
                                    3GPP TS 26.131.

                                    As of release 4 of the GSM 51.010 standard (successor to GSM 11.10), even
                                    GSM mobile phones may be tested to 3GPP TS 26.132.

                                    The UPL-B9 option (3G Mobile Phone Tests) of the Audio Analyzer UPL is now
                                    available for measuring the acoustic characteristics of 3GPP and GSM mobile
                                    phones. The measurements are in line with 3GPP TS 26.131, TS 26.132 and
                                    TS  51.010  and have been validated by  an independent test house for type-
                                    approval testing.

1154.7530.14                                                 1

mstar_wh · 发表于 2011-1-25 19:58:52

下载下来先看看

lybxfans · 发表于 2011-1-25 13:33:23

谢谢楼主分享

qiujun · 发表于 2011-1-21 10:34:26

很好呀，谢谢了

luobing · 发表于 2013-12-19 09:19:27

谢谢分享。

lishichaox · 发表于 2014-6-4 12:17:27

学习学习

stephenchina · 发表于 2014-7-17 11:21:51

学习学习。

zhangyicheng · 发表于 2016-6-22 16:18:18

全部都是英文表示我现在还看不懂

		自动登录	找回密码
密码			注册

[硬件测试资料] 音频测试说明

本帖子中包含更多资源