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  • Recently our website has been counterfeited, this is the only official website of CRYSOUND, please do not be deceived

    Intelligent loudspeaker test

    Intelligent loudspeaker test

    The intelligent loudspeaker adds voice recognition, Internet of Things (IoT) control and other functions based on the traditional Bluetooth loudspeaker, so it becomes popular with consumers. However, in order to better perform multi-directional voice recognition and play clearer stereo sound, its smart MIC and Speaker are also increased continuously. Compared with traditional loudspeakers, the smart loudspeaker has more stringent requirements for the characteristics of MIC and Speaker. How to efficiently and comprehensively test and control the audio unit of such smart loudspeaker has become a major problem for its production. CRYSOUND provides complete and efficient test solutions to incoming inspection, semi-finished and finished products testing of intelligent loudspeakers.

    Features
    • Full-automatic testing
    • Multiple transmission methods
    • Perform multiple parameter tests in a single sweep
    Solution introduction
    MIC PCBA testing

    MIC PCBA testing

    • CRY6151B's mouth simulator sends the sweep signal → MIC PCBA collects the sound → CRY573 selects multi-path signals and performs PDM (I2S) code conversion → CRY6151B for analysis

    • Multi-channel MIC testing completed in a sweep; Reference MIC is used to monitor the sound signals from the mouth simulator.


    Speaker PCBA testing

    Speaker PCBA testing

    • CRY6151B communicates with PCBA through Bluetooth/WiFi/USB/analog signal and other methods based on the characteristics of PCBA to produce electrical signals → the interface that produces electrical signals inputs them into the electrical signal input port of CRY6151B for analysis.

    Finished product testing

    Finished product testing

    • CRY6151B mouth simulator produces sounds → Smart loudspeaker's multi-channel MIC collects sounds → the collected data is transmitted to CRY6151B through Wifi for analysis.

    • CRYSOUND system is connected to the smart loudspeaker through WIFI, and Wifi is used to make Speaker sound → the multi-channel microphone realizes the signal collection of multiple Speaker units → signals are transmitted to CRY6151B for test and analysis.


    Test parameters

    PCBA test

    Microphone TestFrequency Response (FR)
    Total Harmonic Distortion (THD)
    SNR
    Sensitivity
    Speaker testingFrequency Response (FR)
    Total Harmonic Distortion (THD)
    Higher harmonic (Rub & Buzz)

    SNR

    Sensitivity
    Crosstalk
    Noise floor

    Finished product testing

    Microphone Test

    Frequency Response (FR)

    Total Harmonic Distortion (THD)
    SNR

    Speaker testingFrequency Response (FR)
    Total Harmonic Distortion (THD)
    Higher harmonic (Rub & Buzz)
    SNR

    Configuration list
    CRY6151B Electroacoustic tester X1 Standard Details
    CRY602 Mouth simulator X1 Standard Details
    CRY333 Measurement Microphone X4 (based on drive unit) Standard Details
    CRY506 Preamplifier X4 (based on drive unit) Standard Details
    CRY573 8-channel audio converter X1 Standard Details
    Supplied standard cable x1 Standard Details
    CRY shielding box X1 Standard,customized Details
    CRY5611 Sound level calibrator X1 *Optional* Details
    Intelligent loudspeaker test fixture X1 *Optional* / Customized Details
    PC X1 *Optional* Details
    国产精品三级专区
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