[asterisk-bugs] [JIRA] (ASTERISK-24589) Translation from g722 to silk16

[Richard Mudgett (JIRA)]

     [ https://issues.asterisk.org/jira/browse/ASTERISK-24589?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Richard Mudgett updated ASTERISK-24589:
---------------------------------------

    Description: 
Translation path between silk codec and g722 reduces quality one-way.

core show translation paths for g722 and silk16 show the following:
{noformat}
g722       To silk16    : (g722)->(slin)->(silk8|silk12|silk16|silk24)
silk16     To g722      : (silk8|silk12|silk16|silk24)->(slin16)->(g722)
{noformat}

So one way is going via slin16 (good), but coming from g722 to silk16 is going via slin, which means a reduction of bandwidth and hence a reduction in audio quality. 

According to ASTERISK-15637, this should not happen but it does

  was:
Translation path between silk codec and g722 reduces quality one-way.

core show translation paths for g722 and silk16 show the following:

g722       To silk16    : (g722)->(slin)->(silk8|silk12|silk16|silk24)
silk16     To g722      : (silk8|silk12|silk16|silk24)->(slin16)->(g722)

So one way is going via slin16 (good), but coming from g722 to silk16 is going via slin, which means a reduction of bandwidth and hence a reduction in audio quality. 

According to ASTERISK-15637, this should not happen but it does


> Translation from g722 to silk16
> -------------------------------
>
>                 Key: ASTERISK-24589
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-24589
>             Project: Asterisk
>          Issue Type: Bug
>      Security Level: None
>          Components: Codecs/codec_g722
>    Affects Versions: 11.13.0
>         Environment: Linux
>            Reporter: Daniel Ammann
>            Severity: Minor
>
> Translation path between silk codec and g722 reduces quality one-way.
> core show translation paths for g722 and silk16 show the following:
> {noformat}
> g722       To silk16    : (g722)->(slin)->(silk8|silk12|silk16|silk24)
> silk16     To g722      : (silk8|silk12|silk16|silk24)->(slin16)->(g722)
> {noformat}
> So one way is going via slin16 (good), but coming from g722 to silk16 is going via slin, which means a reduction of bandwidth and hence a reduction in audio quality. 
> According to ASTERISK-15637, this should not happen but it does



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