1.1 Product Overview  
CRY6151 is the newest electro-acoustic analysis system developed by CRY Sound with powerful functions and strong 
stability. It can measure the performance of headphone (USB, Bluetooth, ANC), microphone (electret, dynamic and MEMS), 
receiver, micro speaker, speaker, communication helmet, etc. The measurement parameters include frequency response, 
sensitivity, impedance, distortion, resonant frequency(F0), balance, position of headphones, phase polarity, current and 
voltage of microphone, signal to noise ratio (SNR), directivity, T&S parameters, loudness rating and so on. The frequency 
range is 20Hz-20kHz. 
Technically, CRY6151 electro-acoustic analysis system is not only a new breakthrough in the series products of 
CRY6125, CRY6135, CRY6136, but it also the earliest instrument that can test the Bluetooth Audio, as well as realize auto 
pair without manually click. 
The software and hardware of CRY6151 has been fully upgraded. 
Hardware: 
Use the current most popular USB2.0 interface to transfer the data, to obtain a faster speed and more stable and 
reliable data; adopt the four-channel synchronous acquisition method to collect the data, which can realize two 
headphones and two microphone assemblies test. 
Software: 
V8.0 is based on Windows 7 & 32 bit system and supports Win XP and Windows 7 & 64 bit system (needs to update 
the driver). It has friendly interface, convenient operation and powerful functions. Besides having all test functions of early 
electroacoustic instrument, the following functions have been added: 
Higher and faster test precision;  
Support a variety of stimulus type, including RMS, Rapid Stepped Sweep, Precise stepped sine sweep, Multitone, 
White noise and Pink noise. 
Single sweep measure Frequency Response, Sensitivity (SPL), Distortion (THD), Impedance, F0, Phase, Balance, 
Polarity, etc. 
Interface for multiple screen can view a variety of test curves; 
All test items are free to be added and deleted; 
Strong saving function, to meet the application requirements of laboratory and production line simultaneously; 
Devices are classified by sensitivity or frequency response frame, the bar code of device can be read; 
Device type can be selected freely, input and output port of instrument can be customized;  
Strong information system make it easier for users to operate the software; 
Various auxiliary functions, such as showing or hiding the testing curve and so on
 Sweep Signal 
Frequency Range:  generally 20Hz-20kHz, 1~96kHz under particular circumstances 
Frequency Error:  <0.01% 
Frequency Band Range:  it can be customized within the frequency range of 20Hz-20                
Octave Mode:  1/3, 1/6, 1/12, 1/24 for choice  
Frequency Response:  ≤ ±0.2dB (based on 1kHz) 
Level Range:  50-5000mV, error≤ ±0.1dB, distortion<0.1% 
Output Impedance:  1Ω, 33Ω, 150Ω, 300Ω, 450Ω, 600Ω, 750Ω, 900Ω, 1050Ω 
2. Level Measurement 
Frequency Range:  20Hz-20kHz 
Frequency Response:  ≤ ±0.5dB (based on 1kHz) 
Level Range:   Electrical signal measurement: -80dB~10dB(0dB=1V) 
Acoustic signal measurement: 50dB-140dB (94dB=1Pa) 
Measuring error: ≤ ±0.2dB 
Ground noise: -100dBV 
3. Impedance Measurement 
Frequency Range:  20Hz-20kHz  
Measuring Range:  1Ω~2000Ω 
Measuring Error:  ≤ ±1% 
4. Distortion Measurement 
Frequency Range:  20Hz-20kHz 
Measuring Range:  0.1~80% 
5. Voltage and Current Measurement of Electrets Microphone 
Voltage Range:  0~6.4V ± 50mV 
Current Range:  10~1000uA 
Measuring Error:  ≤ ±1% 
6. Optional Accessories 
Artificial Mouth:  CRY601, CRY602 etc. 
Measurement Microphone:  CRY331, CRY332 etc. 
Artificial Ear:  CRY318, CRY711 
Bluetooth Adapter:  CRY574 Bluetooth Dongle 

SOUNDCHECK 10.0 electroacoustic testing system


In general, the test system consists of a test software system running on a PC and external hardware. The biggest difference from the traditional testing instruments familiar to engineers is that the traditional testing instruments are integrated, the testing functions are fixed, and the customers are unable to achieve a series of different testing procedures and requirements, the computing speed is not comparable to the computer, and the function expansion is even more impossible. The computer-based test system takes full advantage of the powerful computing power of the computer, and functions are updated and test process changes are implemented.