[Bradford] Convert wave amplitude into a float

[shi]

Hi,


Sounds like http://sox.sourceforge.net/ might be more useful for them than
Audacity.

--
shi
wetgenes.com


On 20 March 2014 19:19, John R. Hudson <j.r.hudson at virginmedia.com> wrote:

> No, there is a stream of waves being sent from the Raspberry Pi. The aim
> is to detect changes in the shapes of these waves. If the changes match
> certain expected events, nothing will happen. If the changes do not
> match any of the expected events, an alert will be sent.
>
> So the stream needs to be sampled at a reasonable frequency and the
> float value of the wave amplitude assessed to see whether it is part of
> an expected shape or not.
>
> I have found a post on the Internet which says this can be done in
> Python but I wondered if anyone had any other ideas about/experiences of
> sampling waves and processing the data as floats.
>
> John
> --
> On Thu, 2014-03-20 at 19:04 +0000, Andrew Coulson wrote:
> > Hi John,
> >
> > Are they looking to convert a single sample (say the peak value of the
> > wave amplitude) to a float or have I misunderstood?
> >
> > Andrew Coulson
> > email: coulson.andy at gmail.com | tel: 07834 269850
> > LinkedIn: http://uk.linkedin.com/pub/andrew-coulson/50/41/5a0/
> > Ryburn TextWorks - Proofreading, Copy-editing, Writing. Follow us on
> > Twitter @RyburnTextWorks
> > Ryburn ImageWorks - Landscape and Nature Photography
> >
> > Sent from my IQTELL Virtual Workspace
> >
> >
> >
> > ______________________________________________________________________
> > From: John R. Hudson (j.r.hudson at virginmedia.com)
> > Sent: Thursday, March 20, 2014 05:46 PM
> > To: BradfordLinuxUserGroup (bradford at mailman.lug.org.uk)
> > Cc: paul at pinest.co.uk
> > Subject: [Bradford] Convert wave amplitude into a float
> >
> > Hi
> >
> > I popped in to see Paul Cannon this afternoon and they had just hit a
> > problem - how to convert a wave amplitude as displayed in Audacity
> > into
> > a float which can be fed into another program.
> >
> > There is no obvious way in which to do this from Audacity. So it may
> > involve using different software.
> >
> > Any thoughts very welcome.
> >
> > John
> > --
> >
> >
> >
> > _______________________________________________
> > Bradford mailing list
> > Bradford at mailman.lug.org.uk
> > https://mailman.lug.org.uk/mailman/listinfo/bradford
>
>
>
> _______________________________________________
> Bradford mailing list
> Bradford at mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/bradford
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.lug.org.uk/pipermail/bradford/attachments/20140320/a2a8dc38/attachment.html>