[asterisk-dev] Suggestion on Packet Loss Concealment Algorithm

[Steve Underwood]

ColinZuo at viatech.com.cn wrote:

> Hi all,
>
> The current PLC algorithm uses only one pitch period, and therefore
> behaves bad during burst lost (Beeps in background),
>
> I have prolonged the pitch period under burst loss situation and
> tested it using a small utility of ITU STL2005. As for the music files
>
> (which were produced using VLC's file output module), the modified plc
> can handle 50% and 50ms long loss, although it might be that
>
> the music wave doesn't vary very fast, i think the modification still
> improve the performance very much.
>
> The attachment is the rar of the modified files, very little change
> <<asteriskplc.rar>> .
>
> Sincerely,
> Colin
>
This sounds like a really bad idea. The current PLC algorithm isn't
designed for music. It is designed for voice. From your description it
sounds like you don't actually understand what the current code is doing.

Steve