[Blink] Noise on G.722 calls only with Blink

Mike Simpson mtscon at gmail.com
Wed Jun 26 06:22:57 CEST 2013


Problem was fixed by my ISP. Thanks, Mike


On Tue, Jun 25, 2013 at 11:32 PM, Adrian Georgescu <ag at ag-projects.com>wrote:

>
> On Jun 25, 2013, at 11:25 PM, Jeff Pyle <jpyle at fidelityvoice.com> wrote:
>
> I've tested with several.  Polycom X50 series (450, 550, 650, etc) on 3.2
> and 4.0 software, Polycom VVX series on 4.0 and 4.1 software, and other
> soft phones such as Blink Pro, Bria, etc.
>
>
> This was very subjective testing over a long period of time, including
> several versions of Blink.
>
>
> We have not made any changes to the G722 codec since 2010 so the version
> is irrelevant.
>
>  Let me approach it more systematically to get more specific results.
>  Updates to follow.
>
>
> Sure, let us know.
>
>
> - Jeff
>
>
> On Tue, Jun 25, 2013 at 5:15 PM, Adrian Georgescu <ag at ag-projects.com>wrote:
>
>> Blink uses PJMEDIA library and codecs, which are built nowadays into many
>> SIP apps including Asterisk and Bria itself. I have not heard about any
>> interop issues for several years now.  Yet it could be an interoperability
>> issue between the codec implementations.  What runs into the other
>> end-point?
>>
>> Adrian
>>
>> On Jun 25, 2013, at 11:06 PM, Jeff Pyle <jpyle at fidelityvoice.com> wrote:
>>
>> > Hello,
>> >
>> > This is strange.
>> >
>> > I have both Blink Pro and Bria installed on this iMac, along with some
>> other non-SIP VoIP applications.  When I'm on a G.722 call in Blink Pro I'm
>> told the other side hears a pink/white style background noise from me.  If
>> I establish the same call over Bria using G.722, no noise.  The other
>> non-SIP applications with codecs at least the quality of G.722 show no
>> problem either.  With a call on Blink Pro using another codec, say G.711u,
>> no noise.
>> >
>> > I use a Sennheiser USB headset with all applications.  It has an ON/OFF
>> switch that physically disconnects the microphone from the signal path.  If
>> I flip it to OFF during a G.722 Blink Pro, all audio stops, including the
>> noise.  Hmm.
>> >
>> > To the best of my ability all echo canceling and other audio processing
>> is disabled in all applications.  The TX audio level is as close as
>> possible in all applications.  And even though the mic switch seems to
>> indicate Blink itself is not generating the noise, it's the only "noisy"
>> application.  Weird.
>> >
>> > I strongly prefer Blink over Bria, but I can't use it if it's noisy.
>>  I'm not sure where to go from here.  Any suggestions are welcomed.
>> >
>> >
>> > Thanks,
>> > Jeff
>> >
>> > _______________________________________________
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>>
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>
>
>
> --
> Jeff Pyle <jpyle at fidelityvoice.com>
> Director, Voice Engineering
> Fidelity Voice and Data
> 216-245-4106
> www.fidelityvoice.com
>
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