Hi Jeff,
Thanks a lot for giving your inputs. Performance Testing is for both
the voice quality and CPU usage in case of high use. This is for a softphone
client.
So, I am not aware of any ways to do the Noise Cancellation in software.
Thanks
Raja.
On Fri, Oct 29, 2010 at 8:58 PM, Jeff Brower <jbrower at signalogic.com> wrote:
> Raja-
>
> > I would like to know of testing strategies for some of the features
> > below and some other generic questions. Pointer to automating of those
> test
> > cases would be really helpful. Also, any details on code coverage ?
> >
> > 1.) Echo Cancellation - How to concretely test this feature ?
> > 2.) Performance Testing - Lag/Latency issues, and any other issues ?
> > 3.) Noise Cancellation - Is there a way in PJSIP to do this feature ?
> > 4.) Scalability Testing - General testing strategies and what metrics to
> > look into ?
>
> We use phone OS scripts to run Regression tests.
>
> For echo cancellation you can record Rx and Tx audio to .wav or other audio
> file format and use waveform analysis
> tools (Audacity, CoolEdit, Goldwave, Hypersignal, etc).
>
> Performance testing -- do you mean voice quality? Or CPU usage?
>
> For noise cancellation can you clarify? Normally that is codec dependent
> or a separate algorithm; either way it's not
> common in VoIP. There are things like AT&T's "noise pre-processor" for low
> bitrate algorithms used in flight/vehicle
> applications (such as MELPe).
>
> Scalability testing -- I assume you mean for multiple concurrent calls? If
> so, what phone and OS are you using?
>
> -Jeff
>
>
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