Audio Test ITU-T Test

2021-08-02

1. Introduction to ITU-T testing

The Chinese name of ITU-T is the International Telecommunication Union Telecommunication Standardization Sector (ITU-T for ITU Telecommunication Standardization Sector). International standards developed by ITU-T are often referred to as Recommendations.

音频测试(图1)

二、ITU-T认证测试项目

在双向通话中的语音失真	麦克风的灵敏度测试	麦克风的频率响应测试
汽车里的麦克风输出电平	过载点测试	汽车里的麦克风频率响应
发送方向的评定响度测试	接收方向的评定响度测试	发送方向的额定响度变化
接收方向的单向语音质量	发送方向的语音质量稳定	接收方向的语音质量稳定
自噪声的测试	接收方向的外带数据信号	发送方向的失真
收方向延迟	光谱回声衰减	无背景噪声的初始收敛
发送方向的单向语音质量	接收方向的激活	发送方向的衰减范围
双向会话中的发送语音衰减	呼叫设置后的背景噪声传输	背景噪声存在下的语音质量
SRW接合响度额定值	发送方向的SRW线性度	接收方向的SRW线性度
发送方向的语音质量稳定	接收方向的SRW单向语音质量	接收方向的语音质量稳定性
麦克风方向特性测试	麦克风失真测试	最大声压级测试
空闲信道噪声测试	信噪比的改善	发送方向延迟
接收方向的额定响度变化	发送灵敏度的频率响应	接收灵敏度的频率响应
发送方向的空闲信道噪声	接收方向的空闲信道噪声	发送方外带数据信号辨别
接收方向的失真	终端耦合损耗	随着时间变化的回声电平
有背景噪声的初始收敛	回声性能	发送方向的激活
接收方向的衰减范围	双向会话中的衰减范围	双向会话中的回声分量检测
背景噪声传输质量	舒适噪音注入	SRW延迟
SRW灵敏度的频率响应	发送方向SRW噪声消除测试	发送方向的单向语音质量
回声控制失效的验证

3. ITU-T test standard

1) ITU-T P.1110;

2) ITU-T P.1100.

4. Lanya ITU-T test advantages

1) Lanya has a professional ITU-T voice experiment, and the laboratory is equipped with the ACQUA audio test system imported from Germany;

2) Lanya has 2 professional engineers, who can arrange a thorough investigation and certification test for customers within 48 hours;

3) Lanya also has the testing capabilities and qualifications of FCC, CE-EMC (including human exposure testing) and other countries, and can provide one-stop testing and certification solutions for wireless charging.

Lanya Technology Service (Shenzhen) Co., Ltd. is an accredited laboratory by international institutions such as National CNAS, China Metrology Certification CMA, American Laboratory Accreditation Association A2LA, Wireless Power Consortium WPC, Bluetooth Certification and Evaluation Committee SIG Amazon Amazon, etc. Lanya's mission: to make your products available all over the world!

Consulting Contact: Benson Zhang

Mobile/Mob:(+86)13632500972

Email/E-mail: sales13@cblueasia.com

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