Audio Analyzer A5

Audio analyzer A5

A5 is a high-performance analog 2-channel audio analyzer , fully benchmarking with AP company APx525. In addition to having ultra-high system performance, it also provides a series of testing plugins to expand testing capabilities, and supports multiple digital interfaces (BT, I2S, HDMI, PDM, etc.). It is a testing equipment for the development stage of consumer audio and automotive electronics and other audio and video products.

A5 is a high-performance analog 2-channel audio analyzer developed by Aptec, fully benchmarking with AP company APx525. In addition to having ultra-high system performance, it also provides a series of testing plugins to expand testing capabilities, and supports multiple digital interfaces (BT, I2S, HDMI, PDM, etc.). It is a testing equipment for the development stage of consumer audio and automotive electronics and other audio and video products.

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Product Details
Technical specifications
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With the continuous upgrading and replacement of audio products and Bluetooth technology, early audio analyzers can no longer meet the current test needs in some functions, such as small output and input amplitude, and single codecs supported by Bluetooth. In response to the above problems, we designed and developed the A5 audio analyzer, which has ultra-high system performance: typical THD+N -108dB, maximum input 300Vrms (balanced), analog output amplitude 21Vrms. Support a variety of Bluetooth codecs, such as: SBC, APTX, APTX-LL, aptX-HD, AAC, LHDC (HWA), etc., DSIO option supports higher sampling rate than before, and adds PDM interface options to expand the application range of the instrument, A5 basically meets the audio performance test of all current audio products.

Key features:

Analog 2-channel input/output
SPDIF/TOSLINK/AES/EBU digital interface is supported as standard
Support BT/HDMI/I2S/PDM and other digital interface expansion
Complete and powerful electroacoustic analyzer functions
Code-free automation and comprehensive API interface
Support for VB.NET, C#.NET, LabVIEW
Universal software platform, generate a variety of formats of reports and pictures, easy to share
A new generation of software interface, support one-click testing, intelligent setting, data graphic judgment, advanced settings, etc

Some of the measurement functions:

Level/Gain/Phase Level & Gain & Phase
Channel Balance/Level Ratio
Frequency Response
Total harmonic distortion plus noise THD+N
Intermodulation distortion IMD
信噪比 /Signal-to-Noise Ratio
Noise/Noise
Separation/Crosstalk
Lnterchannel phase
DC Level DC Level
Frequency Measurement
Test recorder Measurement Recorder
Step Level Sweep
Step Frequency Sweep
Common-mode rejection ratio CMRR
Oscilloscope/Spectrometer/Scope Monitor/Specturm
DC Level Sweep
Q-peak noise

• System performance

Residual THD+N (20kHz BW): -108dB

• Source indicators

Sinusoidal signal frequency range: 0.1Hz to 80.1kHz

Frequency accuracy: 3ppm

Intermodulation Distortion (IMD) test signal types: SMPTE, MOD, DFD

Maximum output amplitude (balanced): 21.21 Vrms

Amplitude accuracy (1 kHz): ±0.03dB

Flatness (20 Hz–20 kHz): ±0.008dB

Analog output configuration: Unbalanced & balanced

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: 300Vrms(bal)

Maximum bandwidth: 90kHz

Intermodulation Distortion (IMD) test functions: SMPTE, MOD, DFD

Amplitude accuracy (1 kHz): ±0.03dB

Amplitude flatness (20 Hz–20 kHz): ±0.008dB

Residual input noise (20 kHz BW): 1.3uV

Independent harmonic analysis: d2–d10

Maximum FFT conversion length: 1.2M points

DC voltage test: Yes

• Common indicators

Size (WxDxH): 480mm*522mm*153mm

Weight: 8.2kg±0.5kg

Working voltage (AC): 220V, 50Hz/100V-240V, 50Hz-60Hz

1. A5-BT-DUO option

The Bluetooth Dual Antenna Module is a completely revised, upgraded Bluetooth hardware module with a dedicated source and receiver, a new Bluetooth chip and the latest firmware, higher RF power, and improved RF shielding. And it offers a range of new audio codecs, support for new operational features in profiles, and faster connection times.

2. A5-HDMI option

HDMI+ARC (Audio Return Channel) is a versatile audio monitoring and measurement option, it is powerful, easy to use, accurate measurement results, can be widely used in multimedia products audio quality testing, can provide all standard audio measurement items, including level, signal-to-noise ratio, distortion, phase, crosstalk, group delay, etc.

3. A5-DSIO option

The DSIO option adds a multi-channel digital serial interface to the audio analyzer, providing a direct connection to the chip-level interface, which plays a decisive role in the design and development of the board, and its simple use and accurate test results can be widely used in audio quality testing of various digital devices.

4. A5-PDM option

PDM (Pulse Density Modulation) is a 1-bit, high-clock frequency data stream used in MEMS (Microelectro-Mechanical Systems) digital microphones, widely used in the design of smartphones. Audio analyzers equipped with the A5-PDM module can be directly connected to any device with PDM inputs or outputs to enable comprehensive audio testing required in the highly mobile telecommunications industry.

Software Options:

1. AX-SPK-RD option (standard)

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 (standard)

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.

A5 Audio Analyzer Configuration Table

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