The Terra-SAP (Mini Audio DSP Processor) is an integral classroom IP device with full DSP, used to integrate all your local audio sources within the classroom with the TERRACOM overall audio IP system – without the need for additional sets of speakers for intercom. The Terra-SAP acts as the audio hub inside the classroom for locally connected audio devices such as wireless microphones (Bluetooth, IR, RF, etc.), PC audio, Display or Projector audio, etc.. The Terra-SAP can also utilize our specialized ceiling-mounted boundary microphones (BCM201W/BCM201B) for in-classroom sound reinforcement complete with AEC and as the talkback microphone for hands-free intercom - all using the same speakers including automatic muting of the local program audio. The Terra-SAP includes 2 XLR Microphone inputs – 1 has switchable phantom power, 3 screw-terminal mic inputs for local sound and assignable intercom use, 1 3.5mm input jack for local program audio input. The Terra-SAP also has 1 3.5mm output jack and 1 screw-terminal balanced audio output. The Terra-SAP has 8-ohm, 20w x 2ch Class-D ampli¬er outputs for local classroom speakers, and also includes 1 USB2.0 port for music and/or message storage or it can used as a record output to USB storage device. There is a mini-USB input for connection to PC for use as WEB conferencing with built-in AEC. There are also 3 Logic Control inputs for call-in buttons, analog local volume control and audio input selection can be controlled with our optional RAC 5/8 controllers, and/or can be used as emergency message, call-in activation or output relay trigger. A built-in push-button with protective security cover on the front of the Terra-SAP can also be programmed for call-in, emergency call activation for alerting a central monitoring station to respond incidents, internal message playback, relay trigger. There is also an on-board programmable FORM-A relay output that can be triggered via local logic input, logic input from any TERRACOM device in the intercom system, or manually from microphones and/or GUI software.