eprime capabilities

Sun Dec 12 02:45:02 UTC 2010

Ah! I would appreciate you let us know what you used  to objectively measure
syllabic stress eventually! This is interesting.

On Sun, Dec 12, 2010 at 10:42 AM, Lidia Suarez <nusphd at gmail.com> wrote:

> Thanks Michiel for all the suggestions. Yes, it is very difficult
> to identify syllable boundaries because of co-articulation. Merry, note that
> lexical stress is defined by changes in pitch, duration, and intensity. All
> three features are interrelated, choosing just duration may be not enough.
> Therefore, you may need to support the results given by the software with
> some kind of "human" rating. For example, you could have two judges and
> calculate inter-rater agreement or have a sample of "naive/healthy"
> participants to rate lexical stress of the words pronounced by  children
> with CAS.
>
> On Fri, Dec 10, 2010 at 3:14 PM, Peter Quain <pquain at une.edu.au> wrote:
>
>>
>> My guess is that you'd need signal analysis software (and good code) to
>> sort out syllable boundaries, and WS or SW emphasis, or syllable length (is
>> this related to WS SW?). Neither e-prime or DMDX is a signal processing
>> software. They are designed to time presention of stimuli accurately, and to
>> accurately collect responses to the stimuli, and to provide feedback when
>> needed. I think that they cannot do what I think you are wishing they would
>> do, no matter how you fiddle.
>>
>>
>>
>> At 05:50 PM 10/12/2010, you wrote:
>>
>>> Sorry for the confusion.
>>>
>>> I want e-prime to record vocal responses, and determine whether the
>>> duration of the first syllable is longer than the second syllable, and vice
>>> versa. So yes, i wanted e-prime to do real-time analysis and provide instant
>>> feedback on the responses.
>>> PVI is a calculation equation about the duration of syllables to
>>> determine stress, that I assume would have to be part of the programming
>>> script in order for it to be able to do. Currently I am fiddling with DMDX
>>> to see if it is able to do this kind of analysis.
>>>
>>> Thanks for your help.
>>> ________________________________________
>>> From: e-prime at googlegroups.com [e-prime at googlegroups.com] on behalf of
>>> David McFarlane [mcfarla9 at msu.edu]
>>> Sent: Friday, December 10, 2010 2:52 AM
>>> To: e-prime at googlegroups.com
>>> Subject: RE: eprime capabilities
>>>
>>> Merry,
>>>
>>> I had pretty much the same reaction as did Mich
>>> to your question.  EP can readily present your
>>> visual and auditory stimuli and present feedback,
>>> and might even collect the subjects' responses
>>> (EP2 can even record subjects' vocalizations into
>>> .wav files).  But by "have the computer judge ...
>>> whether they correctly used weak-strong (WS) or
>>> strong-weak (SW) stress" do I correctly
>>> understand that you wish EP to do real-time vocal
>>> recognition & analysis?  That *is* a tall
>>> order!  Do you know of any other current software
>>> or hardware that can not only recognize WS vs. SW
>>> stress, but do so reliably enough to pass
>>> scientific muster?  Or is that what the PVI does,
>>> based merely on the raw sound-pressure waveforms?
>>>
>>> To be sure, in principle EP might well be
>>> *capable* of "judging" WS vs. SW stress, but it
>>> would pose a formidable programming challenge and so would not be
>>> *practical*.
>>>
>>> But perhaps I misunderstand and you have something simpler in mind.
>>>
>>> -- David McFarlane, Professional Faultfinder
>>>
>>>
>>> At 12/9/2010 07:27 AM Thursday, Michiel Spape wrote:
>>> >Hi,
>>> >What exactly do you wish E-Prime to calculate?
>>> >“whether they correctly used weak-strong (WS) or
>>> >strong-weak (SW) stress (this could be
>>> >calculated using a pairwise variability index
>>> >(PVI) - a positive PVI would indicate SW, and a
>>> >negative PVI would indicate weak-strong stress)”
>>> >would mean that the computer A) records vocal
>>> >responses (possible in E-Prime), B) that vocal
>>> >responses are classified as WS/SW, right? I’d
>>> >imagine if you would do the test semi-automatic
>>> >- let e-prime record responses and so on, and
>>> >then have the experimenter classify the words
>>> >immediately after the participant says them (I
>>> >mean, after every trial, for instance), this
>>> >would be possible. If you wish to know whether
>>> >E-Prime can do any sort of higher-order
>>> >analysis, the answer is no (unless you are
>>> >REALLY REALLY good with programming, in which
>>> >case you could do the same with much more ease
>>> >in .NET, c#, Matlab, etc). It cannot do signal
>>> >analysis at all (therefore no acoustic analysis
>>> >either), nor is it (I imagine) intended to do such things.
>>> >
>>> >BUT, the semi-automatic way is probably much
>>> >easier for anyone involved. I mean, the few
>>> >times I did a Stroop task with vocal responses,
>>> >I classified the subjects’ responses (tip for
>>> >those thinking of it: classify the first letter
>>> >of their literal response (‘g’ if green, for
>>> >instance), not whether it is correct, or _you_
>>> >will have a Stroop effect as well as the
>>> >subjects!) as well. You will have to endure
>>> >[number of subjects * boredom involved in task = ] total boredom though.
>>> >
>>> >Hope that helps,
>>> >Mich
>>> >
>>> >
>>> >Michiel Spapé
>>> >Research Fellow
>>> >Perception & Action group
>>> >University of Nottingham
>>> >School of Psychology
>>> >www.cognitology.eu
>>> >
>>> >From: e-prime at googlegroups.com
>>> >[mailto:e-prime at googlegroups.com] On Behalf Of Merry Ha
>>> >Sent: 09 December 2010 11:32
>>> >To: e-prime at googlegroups.com
>>> >Subject: eprime capabilities
>>> >
>>> >Hi,
>>> >I'm a speech pathology honours student from the
>>> >University of Sydney working on my project at
>>> >the moment using e-prime for the first time.  My
>>> >honours project will be used for children with
>>> >Childhood Apraxia of Speech (CAS).
>>> >
>>> >We will be presenting novel word stimuli on the
>>> >screen visually and auditorily, and then have
>>> >the child to imitate the computer, or read off
>>> >the screen. Children with CAS tend to say words
>>> >with equal stress, and the aim of the experiment
>>> >was to have the computer judge and provide
>>> >feedback whether they correctly used weak-strong
>>> >(WS) or strong-weak (SW) stress (this could be
>>> >calculated using a pairwise variability index
>>> >(PVI) - a positive PVI would indicate SW, and a
>>> >negative PVI would indicate weak-strong stress).
>>> >Do you know if this programming is possible for e-prime?
>>> >
>>> >Merry
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "E-Prime" group.
>>> To post to this group, send email to e-prime at googlegroups.com.
>>> To unsubscribe from this group, send email to
>>> e-prime+unsubscribe at googlegroups.com<e-prime%2Bunsubscribe at googlegroups.com>
>>> .
>>> For more options, visit this group at
>>> http://groups.google.com/group/e-prime?hl=en.
>>>
>>> --
>>> You received this message because you are subscribed to the Google Groups
>>> "E-Prime" group.
>>> To post to this group, send email to e-prime at googlegroups.com.
>>> To unsubscribe from this group, send email to
>>> e-prime+unsubscribe at googlegroups.com<e-prime%2Bunsubscribe at googlegroups.com>
>>> .
>>> For more options, visit this group at
>>> http://groups.google.com/group/e-prime?hl=en.
>>>
>>
>> --
>>  You received this message because you are subscribed to the Google
>> Groups "E-Prime" group.
>> To post to this group, send email to e-prime at googlegroups.com.
>> To unsubscribe from this group, send email to
>> e-prime+unsubscribe at googlegroups.com<e-prime%2Bunsubscribe at googlegroups.com>
>> .
>> For more options, visit this group at
>> http://groups.google.com/group/e-prime?hl=en.
>>
>>
>

-- 
You received this message because you are subscribed to the Google Groups "E-Prime" group.
To post to this group, send email to e-prime at googlegroups.com.
To unsubscribe from this group, send email to e-prime+unsubscribe at googlegroups.com.
For more options, visit this group at http://groups.google.com/group/e-prime?hl=en.

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://listserv.linguistlist.org/pipermail/eprime/attachments/20101212/137d4a8e/attachment.htm>