最新规范-3gpp_audio规范

hawkes

2 Preparation and Start of Application Software.........................................2
Required Measuring Instruments and Accessories............................2
Installing the Software ........................................................................4
Test Setup ..........................................................................................5
Starting the Application Software .......................................................5
Configuring the Application.................................................................6
Setup Conversion for Firmware Updates ...........................................6
3 Operating Concept ................................................................................7
4 Measurements .......................................................................................9
General...............................................................................................9
Notes on Individual Measurements ..................................................10
Sending Frequency Response and Loudness Rating ......................10
Sending Frequency Response ....................................................10
Sending Loudness Rating ...........................................................11
Receiving Frequency Response and Loudness Rating....................12
Receiving Frequency Response .................................................12
Receiving Loudness Rating.........................................................14
Sidetone Masking Rating (STMR)....................................................15
Echo Loss.........................................................................................16
Stability Margin .................................................................................17
Sending Distortion ............................................................................17
Receiving Distortion..........................................................................18
Idle Channel Noise Sending .............................................................19
Idle Channel Noise Receiving ..........................................................20
Ambient Noise Rejection ..................................................................20
5 Calibration Routines ...........................................................................23
Calibration of Artificial Ear ................................................................23
Calibration of Ear Type 3.2 Low Leakage......................................24
Calibration of Ear Type 3.2 High Leakage ..................................25
Calibration of Ear Type 3.3..........................................................26
Calibration of Ear Type 3.4..........................................................27
Calibration of CMU Voice Coder ......................................................30
6 Processing of Measurement Results ................................................32
Printing, Storing and Displaying of Measurement Results ...............32
7 Terminating the Application...............................................................34
【文件名】:0616@52RD_最新规范3gpp_audio.pdf
【简　介】:
【目　录】:
【格　式】:pdf
【大　小】:432K

radiantls

靠，我又穷了！！

mr_yzh

thanms

csl_471

不错不错真不错

ericlau73

穷就多发发帖啊，不能光看啊

ericlau73

发帖就行了

seasun1980

下来看看，什么时候的标准。