GA3216

FOUNDATION GA3216 Pre-configured DSP System for Hearing Aids Description The Foundation GA3216 hybrid is a trimmer−configurable DSP system based on a two−channel compression circuit. It can efficiently replace traditional hearing−aid compression circuits without compromising fundamental performance requirements. A trimmer interface supports manual circuit configuration. It continuously monitors trimmer positions and translates them into the hearing−aid parameters of choice. A serial data interface provides full programmability at the factory and in the field. The Foundation GA3216 includes in−channel squelch to attenuate microphone and circuit noise in quiet environments. It also includes low−distortion compression limiting and programmable high and low cut filters, as well as five configurable equalization filters. Unused blocks can be powered down to save battery current, for example, when using the device in single−channel mode. The Foundation GA3216 Hybrid code programmed into the GC5020 controller chip is ‘1’. Features Efficient, High Fidelity 1 or 2−Channel WDRC Signal Processing Fully Programmable via Serial Data Interface High−Fidelity Audio Quality Four Trimmer Inputs plus Volume Control Flexible Trimmer/Parameter Assignments Optional Two−Terminal or Three−Terminal Trimmers Choice of Wideband or Independent 2−Channel Level Detection Choice of Two Strategies for AGC−I Parametric Adjustment 6, 12 or 24 dB/Octave Band Split Filter or Configurable as S...