A7-audio muting highlysensitive
multi-function audio monitorhead
A7-AUDIO Squelch highly sensitive listeningis the first company to develop the production of highly sensitive monitoringproducts.U.S. use of advanced integrated circuit design, high sensitivity,super-mute function of monitoring an area of about 100 square meters.Squelchthe use of the most advanced circuit design, super-mute, anti- Scream features, built-in automatic gain AGCcircuit to enhance long-distance voice, unique DSP audio output mute, so thatthe effect of exceptionally clear audio playback, a leading domestic The levelof the country and apply for patents. Widely usedin banks, prisons, police, justice, security checks, and other hospitaldepartments, such as hard disk video recording environment.
⊙ Germanimport program A7-audio static noise level of professional sound environmentfor pickup (first monitor).
⊙ importsfrom the United States IC, with the professional circuit to deal with thepickup, clear voice, no noise.
⊙ importlarge Diaphragm Condenser Microphone, anti, anti-environmental noise,wide-angle acquisition voice, without a corner, listening area of 100 squaremeters.
⊙ built-indynamic audio processing circuit, and other non-voice for the voiceamplification for treatment, the total elimination of environmental noise.
⊙ built-inautomatic gain AGC circuit, far from close range to eliminate the voice of thedifferences so that a more realistic playback.
⊙semi-circular enclosure, the installation of accessible and user-friendly tone pinholeinto the mouth, wide-angle sound mining, non-reflective tone.
⊙ shallowconvex surface, anti-echo, to reduce obstacles in the acoustic more realistic,echo smaller, to achieve the ideal state.
⊙ high outputimpedance, low-transmission cable, audio output intensity, strong drive for avariety of recording equipment.
⊙ internalcircuit-MIC, preamplifier, AGC circuit, dsp the elimination of noise (noiseattenuator) circuit, power amplifier.
⊙ A7-audiomonitoring head for the bank, police, inspection, judicial, military, and othernational security department uses the voice of the acquisition.
⊙transmission cable core with the use of a shield line, or the common core ofthe two power lines, transmission distance in accordance with the decisiondiameter size, as far as possible to avoid high-voltage transmission line audiocable layout.
-43DB 1000 HZ
Agc and dsp
Red (power is), black (GND, signal to),
green (positive signal)
Short jumper to start the way Squelch circuit, open circuit at high-fidelity sound amplification AGC way.