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    HD-58A Digital dish-type noise reduction pickups

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

    1, dual-core digital noise reduction pickups, professional dual-core voice noise reduction processor, high-definition restoration of live sound.

    2、Sturdy, beautiful and durable metal shell, the product surface brushing process, highlighting the noble quality of the product.

    3, MINI DSP audio processor, professional recording omnidirectional capacitive microphone, wide frequency response, superior quality.

    4, FPGA dual-core digital noise reduction core, ATDA dynamic noise level detection, adaptive bandpass filtering.

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

    6、Dual-core digital noise reduction core, ATDA dynamic noise level detection, adaptive band-pass filtering.

    7, audio data stream using advanced voice compression coding, high sound reproduction, to achieve WDRC wide dynamic range compression.

    8, array multi-level dynamic noise reduction processing, comprehensive capture of complete, clear voice sound.

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

    10, the latest DSP high-fidelity voice processing (soft copy 0421337), noise reduction after the voice quality has greatly improved

    11, in line with the digital era of high-bandwidth, high linearity, straight and stable response, with high decomposition energy of clear sound quality.

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

    13, -40 ℃ ~ 75 ℃ super ambient temperature work to ensure the back end of high-quality recording effect.

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

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

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

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

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

    19、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 ~ 100 square (continuously adjustable)
    Pickup head: high sensitivity omnidirectional microphone (membrane box explosion-proof)
    Pointing characteristics: omnidirectional enhancement
    Sensitivity: -44dB (1 kHz@94dB SPL)
    Signal-to-noise ratio:70 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: 5dB ~ 10dB (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
    Overall Dimension:58mm(Diameter)×20mm(Height)
    Comply with the standard: in line with the standard EU CE standards, the United States FCC certification, the Supreme Court synchronous recording system construction specifications

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