[arm-allstar] software update status

[Ken]

I noticed some years ago that there was a type of jitter buffer specifically
for the USB channel, but it is disabled by default.

It can be of a fixed size or adaptive.

See the c code for the usbradio channel - snip follows:

 

;------------------------------ JITTER BUFFER CONFIGURATION
--------------------------

    ; jbenable = yes              ; Enables the use of a jitterbuffer on the
receiving side of an

                                  ; USBRADIO channel. Defaults to "no". An
enabled jitterbuffer will

                                  ; be used only if the sending side can
create and the receiving

                                  ; side can not accept jitter. The USBRADIO
channel can't accept jitter,

                                  ; thus an enabled jitterbuffer on the
receive USBRADIO side will always

                                  ; be used if the sending side can create
jitter.

 

    ; jbmaxsize = 200             ; Max length of the jitterbuffer in
milliseconds.

 

    ; jbresyncthreshold = 1000    ; Jump in the frame timestamps over which
the jitterbuffer is

                                  ; resynchronized. Useful to improve the
quality of the voice, with

                                  ; big jumps in/broken timestamps, usualy
sent from exotic devices

                                  ; and programs. Defaults to 1000.

 

    ; jbimpl = fixed              ; Jitterbuffer implementation, used on the
receiving side of an USBRADIO

                                  ; channel. Two implementations are
currenlty available - "fixed"

                                  ; (with size always equals to jbmax-size)
and "adaptive" (with

                                  ; variable size, actually the new jb of
IAX2). Defaults to fixed.

 

    ; jblog = no                  ; Enables jitterbuffer frame logging.
Defaults to "no".

 
;---------------------------------------------------------------------------
--------

 

73

Ken

 

 

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