; Decode for quad speakers
; F = front, B = back (rear) speakers, L = left, R = right
   ; OLD -- produces high samps out of range
  ;iWgain = .707
  ; aFL = aw * iWgain + ax + ay
  ; aFR = aw * iWgain + ax - ay
  ; aBL = aw * iWgain - ax + ay
  ; aBR = aw * iWgain - ax - ay
; OLD ; .3536 is the correct formula but produces output amps about 1/3 lower
; OLD ; than with uhj decoding, so I raised it to .45
; OLD ; iwxygain = .3536
;iwxygain = .45
iwxygain = .52  ; to roughly balance output levels against B, uhj & 2 chan.
   aFL = (aw * iwxygain) + ((ax + ay) * iwxygain)
    aFR = (aw * iwxygain) + ((ax - ay) * iwxygain)
     aBL = (aw * iwxygain) - ((ax - ay) * iwxygain)
      aBR = (aw * iwxygain) - ((ax + ay) * iwxygain)

  ; output speaker signals
outq aFL, aFR , aBL, aBR

