Home >> Product Center >> Audio Analyzer A2 >> Audio Analyzer A2
  • 产品名称: Audio Analyzer A2
  • Overview: A2 could test many kinds of audio data for Consumer Electronics and Car Electronics, Such as mobile
  • Overview: phone, earphone, loudspeaker box, Audio player, Amplifier, home theatre, TV, Set-Top Box, auto media

1. Main Features and functions

1.1 key functions

Support Bluetooth test
Support acoustic analysis
Support analog/digital input and output
More than 60 test items, contain ondoscope, spectrum analyzer, continuous sweep
No need to program, can finish test in 3 seconds
Support LabVIEW
auto create many kinds of test report
Support Dolby&DT Source Play

1.2 Test functions

Frequency Response
DC Level
DC Level Sweep
Interchannel Phase
Scope Monitor/Specturm
Frequency Measurement
Measurement Recorder
Stepped Level Sweep
Stepped Frequency Sweep
Compare Encoded Bitstream
Q-peak Noise
Level Ratio
Input Sample Rate
Acoustic Response
Loundspeaker Test


2. Hardware description

1 channel analogy output, 2 channel analogy analyzer input

Analog balanced and unbalanced input/output interface

support linear encoding digital audio and optical fiber interface (AES/the EBU, TOSLINK, SPDIF)

support Bluetooth audio bit rate

●up to 192k diguital sampling rate

support automated testing

Key Specifications

1. System performance

Residual THD + N (20 KHZ BW) : - 102 dB

2. Analogy generator performance

Channel number: two channels

Interface type: a balanced XLR port with an unbalanced BNC port

Signal types: sine wave, IMD signal, continuous sweep signal, multitone signal and noise signal

Support digital waveform file formats: (wav, ac3, ec2, etc.)
Frequency range: 0.01 Hz ~ 80.1 Hz
Frequency accuracy: 3 PMM
IMD test signal types: SMPTE, MOD, DFD
Sine wave maximum output voltage 16 v (balance) / 8 v (unbalance)
Amplitude accuracy:
±0.05 dB
Flatness (20 hz - 20 KHZ) :
±0.01 dB
Analog output configuration: unbalance and balance, common mode
Digital output sampling rate: 22 ks/s ~ 216 ks/s
Support Dolby&DTS streaming broadcast
With overload protection function

3. Analogy analyzer performance

Channel number: four channels
Interface type: a balanced XLR port with an unbalanced BNC port

Input impedance 100 k Ω | | ≈ 200 pf
CMRR≥80 dB, 5 Hz to 5 kHz
Crosstalk: balance mode > 90 dB to 20 kHz; unbalance mode > 100 dB to 20 kHz
Maximum rated input voltage: 230 Vpk
The maximum bandwidth: > 90 KHZ
IMD testing functions: SMPTE, MOD, DFD
Amplitude accuracy (1 KHZ) :
±0.05 dB
Amplitude flatness (20 hz - 20 KHZ) :
±0.01 dB
Residual input noise (20 KHZ BW) : 1.4 uV
Independent harmonic analyzer: d2 - d10
Biggest FFT length: 1024 k
The DC voltage measurement


4.Digital generator performance

lDigital interface type

Balance: AES3, EBU - 3250, IEC60958-4

Unbalance: AES3 - id, SPDIF, IEC60958-3

lDigital audio formats

Linear PCM format output
Support Dolby,DTS digital coding format (loadsignal)

Support 8 bit to 24 bit digital audio

lSampling rate:22 kHz to 192 kHz

lFrequency accuracy :±0.0003% [3 PPM]

5. General specifications

Size (deep X width X height) : 425 * 307 * 89 mm
Weight: 5 kg
Power supply: 100-240 v / 90 w, 50 to 60 Hz

Options and upgrades

1.The bluetooth option to AX - BT - RD/PT

AX-BT-RD is the most best solution for  bluetooth audio testing. Its built-in bluetooth wireless and bluetooth protocol stack, enabling engineers to direct measurement of the bluetooth device. To eliminating the unstable and inconvenience of the bluetooth Dongle , bluetooth audio test is more rapid, simpler and more reliable. Applied to the research and development testing.
AX-BT-PT is a fast connected  bluetooth option specially for the production line test , best-in-speed,ease-of- use.

2.AX-SPK-RD/PT  Software option

The SPK-RD option is specially for R&D engineer for loudspeaker products test,provide comprehensive acoustic measuring function. It includes the key acoustics parameters, loudspeaker impedance analysis, Thiele-Small characteristic and other parameters, the energy time window controls the environment respone reflection, and support waterfall figure and polarization diagram.

The SPK-PT option provides fast and accurate measurement method for production line measurement of loudspeaker products. One second sweeping signal,the analyzer will be collected the loudspeaker parameters that compared with gold unit to ensure the consistency of the product . At the same time,  achieve the measurement parameters such as sound pressure level ,frequency response, Rub&Buzz, polarity, THD, etc.

3.AX-PESQ&POLQA option

Perceptual speech quality  measurement, Perceptual methods were developed to enable evaluation of audio quality in telecommunications channels and networks that use data compression codecs or are of otherwise compromised performance, where conventional objective audio measurements do not provide useful results. 

4.WIFI option AX - WIFI

AX-WIFI option is a cost-effective option that was produced by our company, it is suitable for audio testing of having WIFI function audio terminal products. It can connect with the product in real-time through  WIFI, the connection function of RF is perfect,operation is simple,combined with our audio analyzer, which can meet various audio standard tests. Support wireless communication standard: WIFI 802.11 a/b/g/n Dual Band Ratio.

5.Acoustic option to AX-ACO

AX-ACO contains an ASIO (common such as USB headset or sound card) digital audio stream input and output function, contain fast sweep,multitoned sweepand continuous sweeping measurement, acoustic response , IMD. MOL. Dynamic range,FFT and other advanced measuring.

6.HDMI option AX - HDMI

AX - HDMI option (HDMI + audio back channel (ARC) is a kind of multi-functional audio test option,it support monitoring and audio measuring. It has the advantages of powerful function, ease-of use and accurate measuring results, and can be widely applied to the audio quality testing of multimedia products.AX - HDMI option can provide all the standard audio measurements including level, signal-to-noise ratio (SNR), distortion, phase, crosstalk, group delay, etc.

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