Microphones
The
requirement to record a clear audio sound-track in addition to camera images is
becoming more frequent. Up until now several separate components have been
needed to achieve this including microphone pick-up, pre-amplifier, amplifier,
phantom power supply and mains power supply.
To overcome some of the problems associated with the above;
ClearView Communications have developed a range of miniature microphones which house an omni-directional microphone , phantom power supply, preamplifier and line amplifier in a self-contained vandal resistant case. The complete package is smaller than many microphone heads - measuring only 38W X 25H X 72L mm.
It is intended for wall, ceiling , desk or body mounting. Audio output from the microphone is at line level. It may therefore be fed directly to a DVR for recording. Line level output offers the additional benefit of a robust audio signal, unlikely to be affected by radio signals or interference. Since the unit is powered by 12 VDC , it may be battery powered.
The microphone amplifier utilised is an ultra low noise module. A preset control gives gain control from 35dB to 75dB.