[Bradford] Convert wave amplitude into a float

[John R. Hudson]

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