Thread Subject: Re: IVR intelligibility

From: Jim Tobias
Date: Thu, Jul 05 2007 10:00 AM

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> -----Original Message-----
> From: Diane Golden [mailto: = EMAIL ADDRESS REMOVED = ]
> Sent: Thursday, July 05, 2007 11:59 AM
> To: 'TEITAC Telecommunications Subcommittee'
> Subject: Re: [teitac-telecom] IVR intelligibility
>
> There are a couple of additional VVSG standards that might
> be helpful to think about in reference to the two IVR
> standards related to intelligibility and adjusting the speed
> of speech. Related to intelligibility, the VVSG requires the
> voting system to "be able to reproduce frequencies over the
> audible speech range of 315 Hz to 10K Hz." Don't know if
> that would also be helpful to include.

10 KHz. is too high for telecom (VVSG is talking about direct output,
not over a phone. So I think that's a non-started for us, but maybe
useful for the direct audio provision. It doesn't say anything about
how much of those marginal frequencies, either -- 10%, 25%, 100%?

> On the 7/2 call, we talked about deleting the reference to
> "slowing down"
> the rate of speech of speech in IVR systems. The VVSG does
> have a standard for adjusting the rate of speech (not just
> slowing it down) that requires the speech output of voting
> system to "allow the voter to control the rate of speech from
> 75% to 200% of the nominal rate."

The 200% part is mostly for the benefit of blind users of an audio ballot
interface, who want to be able to speed-listen. And I'm not sure that 75%
is enough of a slow-down for hard of hearing users.

>
> Diane
>
> Diane Cordry Golden, Ph.D., Director
> Missouri Assistive Technology
> 816/350-5280 (direct voice)
> = EMAIL ADDRESS REMOVED =
> www.at.mo.gov
>
>
> -----Original Message-----
> From: = EMAIL ADDRESS REMOVED =
> [mailto: = EMAIL ADDRESS REMOVED = ]On Behalf Of Jim Tobias
> Sent: Thursday, July 05, 2007 9:37 AM
> To: 'TEITAC Telecommunications Subcommittee'
> Subject: [teitac-telecom] IVR intelligibility
>
>
> The VVSG includes some text we may want to use regarding the
> intelligibility of recorded prompts and messages:
>
> "... proper enunciation, normal intonation, appropriate rate
> of speech, and low background noise"
>
> Our relevant provision currently reads: "Provide prompts
> (either as provided by the vendor or by the user) without any
> background sounds that would reduce intelligibility."
>
> I propose changing this to: "Provide prompts (either as
> provided by the vendor or by the user) with proper
> enunciation, normal intonation, appropriate rate of speech,
> low background noise, and without any background sounds that
> would reduce intelligibility."
>
> Can we agree on this?
>
> ***
> Jim Tobias
> Inclusive Technologies
> +1.732.441.0831 v/tty
> +1.908.907.2387 mobile
> skype jimtobias
>
>

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