Audio analyzer A1DD
- Features
- Specification
- Options and upgrades
- Resource centre
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- Commodity name: Audio analyzer A1DD
- Commodity ID: A1DD
A1DD is a multifunctional and extremely fast audio comprehensive tester specially launched based on a low-cost solution, which is very suitable for production line rapid testing and entry-level research and development testing. Mainly used for audio quality testing of consumer, professional audio, and automotive electronics products, such as mobile phones, headphones, speakers, players, amplifiers, home theaters, televisions, set-top boxes, automotive multimedia hosts, etc.
The A1DD is a versatile and extremely fast audio tester specially launched by Eptec based on a low-cost solution. Communication between the instrument and the control computer via USB, controlled by ATC software, enables comprehensive audio parameter measurement in a very short time. The test software ATC has a simple and flexible operation interface, and provides a comprehensive API, supports programming tools such as VB.NET, C#.NET, LabVIEW, etc., and can form a larger and flexible test system through secondary development, which is very suitable for production line testing.
Key features:
- Analog 2 channels of input\output
- Support SPDIF/TOSLINK/AES/EBU digital interface
- No programming is required, and full testing is possible in less than 3 seconds
- Intuitive user interface with one-click testing
- SUPPORT FOR LABIEW, VB.NET, C#.NET
- Supports foot switches or barcode scanner control of the instrument
- Support project file sharing
- Perform versatile and high-performance audio measurements (including oscilloscopes, spectrum analysis, continuous fast sweeps, etc.)
- Provides automated and built-in test sequences to simplify the test environment
- Automatically generate test reports in various formats
- Using ITUT-T standards, POLQA and PESQ complete higher quality voice and audio measurements
Some of the tested features:
- Level Ratio
- Input SampleRate
- Acoustic Response Measurement
- Loudspeaker Measurement/Loudspeaker Test
- PESQ voice quality assessment
- POLQA subjective sound quality evaluation
- Level/Gain & Gain
- Frequency Response
- Total harmonic distortion plus noise THD+N
- 信噪比/Signal-to-Noise Ratio
- DC Level DC Level
- DC Level Sweep
- Interchannel Phase
- Scope Monitor/Specturm
- Frequency Measurement
- Test recorder Measurement Recorder
- Step Level Sweep
- Step Frequency Sweep
- Compare Encoded Bitstream
- Common-mode rejection ratio CMRR
- Confidence SINAD
- Pass/Fail verdict
- Noise
- Impedance/Thiele-Small
- Separation Crosstalk
- Quasi-peak noise Q-peak Nois
Key words:- 分析仪
- 测试
- 接口
- 软件
- 电平
- 测量
- 支持
- frequency
- 扫描
- 模拟
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• System performance
Residual THD+N (20kHz BW): -106 dB
• Source indicators
Sinusoidal signal frequency range: 2Hz to 80.1kHz
Frequency accuracy: 3ppm
IMD test signals: SMPTE, MOD, DFD
Maximum output amplitude (balanced): 16 Vrms
Amplitude accuracy (1kHz): ±0.05 dB
Flatness (20Hz - 20kHz): ±0.01 dB
Analog output configurations: XLR (balanced), BNC (unbalanced)
Maximum digital output sampling rate: 216 kHz
Sampling accuracy: 3ppm
Number of bits: 8-24 bits
Residual jitter: Electrical < 1.5ns fiber < 2.5ns
Dolby/dts Source: Yes (pre-encoded file)
• Analyzer indicators
Maximum rated input voltage: 230Vpk
Maximum bandwidth: 90 kHz
IMD test features: SMPTE, MOD, DFD
Amplitude accuracy (1kHz): ±0.05dB
Amplitude flatness (20Hz - 20kHz): ±0.01dB
Residual input noise: 1.4 uV
Independent harmonic analyzer: d2-d10
Maximum FFT length: 1.2M points
DC voltage measurement
• Common indicators
Size (WxDxH): 430mm*308mm*89mm
Weight: 6.2kg±0.2kg
Working voltage (AC): 220V, 50Hz/100V-240V, 50Hz-60Hz
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Software Options:
1. AX-SPK-RD option
SPK-RD provides designers and developers of electroacoustic products with a comprehensive set of test functions and results, including some key acoustic test indicators, a comprehensive set of T/S parameters, time-window-controlled quasi-acoustic response testing of a non-acoustic environment, impedance analysis, and more, this option includes all test functions of the production line version.
2. AX-SPK-PT option
SPK-PT is used for rapid testing of electroacoustic product production lines, providing the main index parameter test of loudspeakers, and obtaining all test results in one scan. The results include Rub & Buzz, the necessary set of T/S parameters, impedance amplitude and phase, and a dedicated modulated noise test function to detect air leakage in the speaker.
3. AX-PESQ is based on ITU-T P.862 standard
Perceptual audio measurement is widely used in mobile phones, VoIP networks, and other device tests to measure how people perceive sound quality. Especially for devices with limited bandwidth or bit rate, parameters such as frequency response/distortion testing using standard sine waves do not effectively reflect device performance, and only a combination of perceptual and electrical audio tests can fully account for device performance.
PESQ is a widely used perceptual audio measurement primarily for subjective evaluation of speech quality in low-bandwidth devices.
4. AX-POLQA2 is based on ITU-T P.863 standard
POLQA2 uses a new generation of POLQA algorithms for subjective assessment of speech quality in wideband voice devices or devices with acoustic coupling. (Inherits PESQ and supports HD voice, 3G, 4G/LTE and VoIP technologies)
5. AX-STIPA option
AX-STIPA is a plug-in that uses the STIPA method for Voice Delivery Index (STI) testing.
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