Report on electronics.

Version 4 SHEET 1 880 680 WIRE 80 144 0 144 WIRE 224 144 160 144 WIRE 224 224 224 144 WIRE 368 224 224 224 WIRE 0 256 0 144 WIRE 224 256 224 224 WIRE 0 384 0 336 WIRE 224 384 224 336 WIRE 224 384 0 384 WIRE 0 512 0 384 FLAG 0 512 0 FLAG 368 224 MIC_OUT SYMBOL voltage 0 240 R0 WINDOW 3 353 230 Left 2 SYMATTR Value wavefile=Ibeback2.wav SYMATTR InstName V1 SYMBOL res 208 240 R0 SYMATTR InstName R1 SYMATTR Value 200 SYMBOL res 176 128 R90 WINDOW 0 0 56 VBottom 2 WINDOW 3 32 56 VTop 2 SYMATTR InstName R2 SYMATTR Value 1k TEXT 352 440 Left 2 !.tran 1.1 TEXT 312 176 Left 2 ;+ve terminal TEXT 16 448 Left 2 ;-ve terminal TEXT -72 40 Left 2 ;Mic model RECTANGLE Normal 304 432 -80 64 2