1, senior resin PVC material "square heart dot matrix surround" design, effective collection of all-round sound.
2, adaptive dynamic noise reduction processing technology, built-in high-speed DSP digital signal processor.
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, "ClearSpeech for Peakfire" patented technology, to achieve WDRC wide dynamic range compression.
6, AGC automatic gain, near and far voice balance degree of high, card holder separation installation method, easy to side wall or ceiling installation.
7, especially for the open room, effectively eliminate the muddy sound caused by strong echo.
8, the unique design of "electronic noise dynamic closed-loop suppression circuit", completely eliminate the "hiss" electronic noise.
9, built-in ALC microprocessor chip control circuit, automatic suppression of high-intensity sound, reliable protection of back-end audio monitoring equipment.
10, automatic suppression of high-intensity sound, reliable protection of the back-end audio monitoring equipment.
11, the international leading level of audio monitoring echo cancellation technology to effectively reduce the serious echoes in the open room.
12, ultra-long audio signal transmission technology, using RVVP3 × 0.5mm2 shielded cable signal transmission 3 km without distortion.
13, -40 ℃ ~ 75 ℃ super working temperature range, pickup head built-in lightning protection, power supply polarity reversal protection.
14、Won the computer software copyright of the National Copyright Administration of the People's Republic of China.
Pickup range: 10 ~ 100 square (continuously adjustable)
Pickup head: gold-plated shock membrane capacitor microphone
Pointing characteristics: omnidirectional
Sensitivity: -36dB±2dB (1 kHz@94dB SPL)
Signal to Noise Ratio:70 dB (1 kHz@94dB SPL)
Distortion 1:≧ 0.3%（74dB SPL, A-weighted)
Distortion 2:≧ 1.2% (110dB SPL, A-weighted)
Maximum Sound Pressure:120dB SPL (1 kHz ≤ 3% THD, A-weighted.)
Frequency Response:20Hz ~ 20kHz (1 kHz @ 94dB SPL)
Audio output value: 2.5Vpp/(1 kHz@94dB SPL A-weighted)
Signal processing: Dynamic voice Dynamic voice processing
Dynamic range:78 dB (1 kHz at Max dB SPL)
Output impedance: 600 to 1000 ohms unbalanced
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-20V (12V recommended)
Electromagnetic compatibility:Comply with GB 9254-2008
Reliability index:MTNF≧80000hours
Dimension:78mm(diameter)×21mm(height)
