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    HD-58B Digital demixing pickups

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      Pointing characteristics: Omni-directional
      Indoor and outdoor: indoor installation
      Shell material: metal mesh cover + aluminum alloy
      Installation: Ceiling-mounted, wall-mounted, desktop-mounted
      Industry applications: education recording, judicial pris
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    • 产品参数
    • 产品尺寸

    1, professional quad-core voice noise reduction processor - MEMS silicon microphone, high-definition restoration of live sound.

    2, FPGA quad-core digital noise reduction core, ATDA dynamic noise level detection, adaptive band-pass filtering.

    3, high-speed voice DSP digital processing unit, integrated professional AGC and DTS noise reduction signal microprocessor circuit.

    4、FPGA quad-core digital noise reduction core, ATDA dynamic noise level detection, adaptive band-pass filtering.

    5, "Wide dynamic range compression" patented technology, to achieve WDRC wide dynamic range compression.

    6, 24BIT voice processor, up to 35dB adaptive noise reduction capability, intelligent reduction of background and environmental noise.

    7, high-speed voice DSP digital processing unit, integrated professional AGC and DTS noise reduction signal microprocessor circuit.

    8, 24BIT voice processor, up to 30dB adaptive noise reduction capability, intelligent reduction of background and environmental noise.

    9, AEC super echo-canceling technology, digital EQ function, 64/128 times oversampling, sampling precision its high.

    10, AEC super-echo technology, digital EQ function, 64/128 times the oversampling, sampling accuracy its high.

    11, pickup built-in lightning protection, power reverse polarity protection, ESD protection and power protection module.

    12, -40 ℃ ~ 75 ℃ super ambient temperature work to ensure the back end of high-quality recording effect.

    13, through the Ministry of Public Security and Police Electronic Product Quality Testing Center test.

    14、Obtained patent certificate from the State Intellectual Property Office of the People's Republic of China.

    15、Won the computer software copyright of the National Copyright Administration of the People's Republic of China.

    16、Passed the EU environmental protection ROHS directive 2002/95/EC construction specification.

    17、Passed the EU CE standard and the construction specification of synchronous audio and video recording system of the highest prosecution.

    18、Passed the Federal Communications Commission of the United States, that is, the FCC related standards testing and the corresponding system construction specifications.

    Pickup range: 10 to 100 square (continuously adjustable)
    Pickup sound head: MEMS silicon microphone
    Pointing characteristics: Omni-directional enhancement
    Sensitivity: -40 dB (1 kHz@94dB SPL)
    Signal-to-noise ratio:78 dB(1 kHz@94dB SPL)
    Distortion:≧ 0.3% (74dB SPL, A-weighted)
    Maximum Sound Pressure:120dB SPL (1 kHz ≤ 3% THD, A-weighted.)
    Frequency Response:20Hz ~ 20kHz(1 kHz@94dB SPL)
    Output level: 2.5Vpp/ (1 kHz@94dB SPL A-weighted)
    Voice platform: MINI DSP audio processor
    Software method: DSP voice noise reduction algorithm (soft copy 0421337)
    Noise reduction capability: 10dB ~ 15dB (adaptive noise reduction)
    Protection circuit: polarity protection, misconnection protection, lightning protection
    Connection: three-wire system: power line (red), audio (white), common ground (black)
    Signal transmission: 3000 meters twisted pair, shielded cable (electromagnetic complex environment please use shielded cable or transmitter)
    Power supply voltage: linear regulated power supply DC 9V-15V (12V recommended)
    Electromagnetic compatibility:Compliant with GB 9254-2008
    Reliability index: MTNF≧80000hours
    Dimension:58mm(diameter)×16mm(height)
    Comply with standards: comply with the standard EU CE standards, the United States FCC certification, the Supreme Court synchronous recording system construction specifications

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