[asterisk-bugs] [JIRA] (ASTERISK-26292) app_confbridge: 3D-Conferencing via Binaural Synthesis

[Friendly Automation (JIRA)]

    [ https://issues.asterisk.org/jira/browse/ASTERISK-26292?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=235438#comment-235438 ] 

Friendly Automation commented on ASTERISK-26292:
------------------------------------------------

Change 3524 merged by Joshua Colp:
Binaural synthesis (confbridge): Adds binaural synthesis to bridge_softmix.

[https://gerrit.asterisk.org/3524|https://gerrit.asterisk.org/3524]

> app_confbridge: 3D-Conferencing via Binaural Synthesis
> ------------------------------------------------------
>
>                 Key: ASTERISK-26292
>                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-26292
>             Project: Asterisk
>          Issue Type: Improvement
>      Security Level: None
>          Components: Applications/app_confbridge, Bridges/bridge_softmix, Core/Bridging, Core/BuildSystem, Formats/NewFeature
>    Affects Versions: GIT
>            Reporter: Dennis Guse
>            Assignee: Dennis Guse
>            Severity: Minor
>
> 3D-Audio is an interesting for telephone conferencing.
> In a development and research project at TU Berlin, we enhanced Asterisk's 
> conferencing bridge with binaural synthesis.
> Technical Details: 
> * Modified internal signal processing to be capable handling interleaved audio (channel, translate)
> * Extended confbridge (precisely bridge_softmix) by binaural synthesis (basically added a convolution engine using libfftw3) 
> Note: confbridge remains capable to mix for mono channels (default mixing) and binaural synthesis in parallel
> Practical details (can be changed):
> * Required HRTFs are at the moment included as header file
> * Confbridge is at the moment only running with binaural synthesis at 48kHz
> * Only one 3D-Layout per confbridge is rendered (all participants receive the _same_ spatial representation; one's own signal removed)



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