[speex]
;0-10
quality => 3
;0-10
complexity => 4
; true / false
enhancement => true
; true / false
vad => false
; true / false
vbr => false
;0-10
abr_quality => 5
; true / false
abr => false
;0-10
vbr_quality => 5
; true / false
dtx => false