An objective measure of intelligibility of speech ?

On May 25, 4:29=A0pm, Vladimir Vassilevsky <nos...@nowhere.com> wrote:
> Let's say there is a voiceband communication channel suffering from
> noise, linear and nonlinear distortions, interference, fading, frequency
> shift, or any other severe analog or digital artifacts. The quality of
> the channel could be considered as marginally acceptable for conversation=
.
>
> Is there an objective method to measure the quality of such channel ?
> So one could compare the impact of the different impairments on the quali=
ty?
>
> Vladimir Vassilevsky
> DSP and Mixed Signal Design Consultanthttp://www.abvolt.com

Vlad,
Once I spelled Bob's name correctly in his email address, he answered
immediately. Here is his reply.


Hi Maurice,

SG12 has recently agreed Rec. ITU-T P.863, which is the successor to P.
862. I believe it=92s available as a pre-published version and it gives
a whole list of things that it was tested against. It=92s still early
days, so we don=92t yet have any experience of using it within SG16 to
test things such as noise reduction, etc, but =93voice enhancement=94 is
one of the applications that it claims to represent. May be worth
taking a look.

Hope this helps

Best regards
Bob

maury wrote:

> On May 25, 4:29 pm, Vladimir Vassilevsky <nos...@nowhere.com> wrote:
> 
>>Let's say there is a voiceband communication channel suffering from
>>noise, linear and nonlinear distortions, interference, fading, frequency
>>shift, or any other severe analog or digital artifacts. The quality of
>>the channel could be considered as marginally acceptable for conversation..
>>
>>Is there an objective method to measure the quality of such channel ?
>>So one could compare the impact of the different impairments on the quality?
>>

> SG12 has recently agreed Rec. ITU-T P.863, which is the successor to P.
> 862. I believe it&#4294967295;s available as a pre-published version and it gives
> a whole list of things that it was tested against. It&#4294967295;s still early
> days, so we don&#4294967295;t yet have any experience of using it within SG16 to
> test things such as noise reduction, etc, but &#4294967295;voice enhancement&#4294967295; is
> one of the applications that it claims to represent. May be worth
> taking a look.

Thank you, colonel Maurice. I will look into P.863.


Vladimir Vassilevsky
DSP and Mixed Signal Design Consultant
http://www.abvolt.com