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标题：耳机测试系统（数字，无线，usb，蓝牙等）

1楼

ufofozgc 发表于：2011-1-21 12:30:23

Trustsystem可以用于普通立体声耳机，蓝牙耳机，以及usb耳机等所有耳机的测试，测试简单方便。

1. Introduction

TrustSystem is one of the most convenient and easy-operating electro acoustic testing systems for the product line using based on the personal computer. The System can test the Receiver& Speaker fast and exactly. TrustSystem is the System which you can trust.

TrustSystem is prestigious for its excellent quality and reasonable price. It will upgrade time by time to meet the customers’ demands, keep pace with times and engage in exploitation, innovation and perfection which would be the best choice for the product line.

TrustSystem integrates with different modules at different fields for various customers, can satisfy different projects, and test many products:

Speaker, Receiver

Microphone

Stereo Earphone

USB digital microphone

USB sound card

USB phone

Power amplifier

Bluetooth

TrustSystem compute powerfully which could guarantee the precision and the speed of all parameters testing:

Frequency Response

THD(total harmonic distortion)

Rub&Buzz

Impedance

Phase and Polarity

Noise and delay

Fo and average sensitivity

Microphone Current

Statistic analysis

TrustSystem can satisfy special demands after added some modules, so it can extend testing contents, meeting the customers’ need.

2. System Test Principle

A）Stereo Earphone Test

1) TrustSystem earphone test module including an accurate audio card, which has four output channels and four input channels, and IEC 60318 or IEC 60711 artificial ear, which can simulate people’s ears to monitor audio performance.

2) TrustSystem can rank the test result following the different demand, including sensitivity, frequency response, THD, impedance, phase and so.

3) The test speed is very fast and the accurate and stability is very high.

4) Test circuit diagram:

图片点击可在新窗口打开查看此主题相关图片如下：earphone test.png

B）USB Headphone test system

1) Trustsystem USB headphone test module can test USB headphone directly without any extra assembly parts. Trustsystem can driver USB card directly and transmit data via USB card.

2) This system can auto compete all parameters measurement for USB headphone, including: sensitivity, frequency response, THD, Balance, delay, phase and impedance.

3) Test circuit diagram:

图片点击可在新窗口打开查看此主题相关图片如下：earphone with mic.jpg