In the far-talk mode, ADM functions as an optimal directional microphone that attenuates signals arriving from the back and side directions while preserving the front signal. In the end-fire configuration, ADM has two modes of operation "far-talk" and "close-talk". In the broadside configuration it is aimed on the line transverse to the axis. In the end-fire configuration, the signal source (user’s mouth) is intended to be on the axis (line connecting the two microphones).
It has no proximity effect and it is easy to integrate into mobile voice communication and other devices.ĪDM technology allows two types of microphones' configurations: "end-fire" and "broadside". In addition to its superior directional characteristics, ADM is less effected by wind generated noise than conventional acoustic directional microphones. The adaptation process is very fast and frequency selective so that multiple interferences are cancelled simultaneously.
ADM automatically changes its directional characteristics to provide the best noise attenuation in varying environments while fully preserving the signal quality.
Adaptive Dual Microphone (ADM) is a digital signal processing technology creating a directional or noise-canceling microphone using just two omnidirectional microphones.
0 kommentar(er)
