<div dir="ltr"><div>Scott actually your idea doesn't sound bad at all, if I understood it correctly. </div><div>I am thinking we could have the frequency spectrum divided in three sectors : low, mid and high frequencies </div><div>low sector going from 20 Hz to 250Hz, mid from 250 Hz to 2.5 kHz and high from 2.5 kHz to 22kHz<br></div><div><br></div><div>One control would allow to choose in which sector the selection operates. </div><div>And then you would have three different selection controls to set the selection start and size into each sector.</div><div>This way the three different controls would have a different resolution that suits better the sector they relate to. </div><div>Small increase steps for low frequency sector and big increase steps for high frequency sector. </div><div><br></div><div>Not sure if I am making sense to you but it sounds sensible to me </div><div><br></div><div><br></div>Snowman: you can have a go at the draft number 1 I published at the following links and tell me what you think about it ! <div><br><div><div style="font-size:12.8px"><a href="http://depic.eecs.qmul.ac.uk/sites/depic.eecs.qmul.ac.uk/files/AccessibleSpectrumAnalyser_draft1_32bit.dll" target="_blank">VST plugin 32 bit for Windows</a></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><a href="http://depic.eecs.qmul.ac.uk/sites/depic.eecs.qmul.ac.uk/files/AccessibleSpectrumAnalyser_draft1_64bit.dll" target="_blank">VST plugin 64 bit for Windows </a></div></div></div><div style="font-size:12.8px"><br></div><div style="font-size:12.8px"><a href="http://depic.eecs.qmul.ac.uk/?q=system/files/AccessibleSpectrumAnalyser.component.zip" style="font-size:12.8px" target="_blank">AU plugin for Mac</a><span style="font-size:12.8px">, drop it in /Library/Audio/Plug-ins/</span><span style="font-size:12.8px">Components</span><br></div><div style="font-size:12.8px"><span style="font-size:12.8px"><br></span></div><div style="font-size:12.8px"><span style="font-size:12.8px">Fiore</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">2016-01-23 3:12 GMT+00:00 Snowman <span dir="ltr"><<a href="mailto:snowman@snowmanradio.com" target="_blank">snowman@snowmanradio.com</a>></span>:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><u></u>
<div bgcolor="#ffffff">
<div><font size="2" face="Arial">Accessible spectrum analyzer?
fantastic, long over due. I can't wait to check this one
out.</font></div>
<div><font size="2" face="Arial"></font> </div>
<blockquote style="PADDING-LEFT:5px;MARGIN-LEFT:5px;BORDER-LEFT:#000000 2px solid;PADDING-RIGHT:0px;MARGIN-RIGHT:0px"><div><div class="h5">
<div style="FONT:10pt arial">----- Original Message ----- </div>
<div style="BACKGROUND:#e4e4e4;FONT:10pt arial"><b>From:</b>
<a title="mister.bloom@gmail.com" href="mailto:mister.bloom@gmail.com" target="_blank">Fiore
Martin</a> </div>
<div style="FONT:10pt arial"><b>To:</b> <a title="rwp@bluegrasspals.com" href="mailto:rwp@bluegrasspals.com" target="_blank">rwp@bluegrasspals.com</a> </div>
<div style="FONT:10pt arial"><b>Sent:</b> Friday, January 22, 2016 5:57
AM</div>
<div style="FONT:10pt arial"><b>Subject:</b> [Rwp] ReaAccess no longer
available</div>
<div><br></div>
<div dir="ltr">Hi all,
<div><br></div>
<div>Does anybody know where I can get a copy of ReaAccess for windows ? The
domain of the website seems to be expired.</div>
<div><br></div>
<div>By the way, the reason I need it is to test a plug-in I am working on at
Queen Mary University of London called Accessible Spectrum Analyser, which
sonifies frequency spectra</div>
<div>in order to make them accessible. </div>
<div><br></div>
<div>more info and link to the first prototype below and if you'd like to give
some feedback, I am all ears</div>
<div><br></div>
<div>thank you </div>
<div>Fiore </div>
<div><br></div>
<div><br></div>
<div><br></div>
<div>Links for plug-in download:</div>
<div><br></div>
<div>
<div><a href="http://depic.eecs.qmul.ac.uk/sites/depic.eecs.qmul.ac.uk/files/AccessibleSpectrumAnalyser_draft1_32bit.dll" target="_blank">VST
plugin 32 bit for Windows</a></div>
<div><br></div>
<div><a href="http://depic.eecs.qmul.ac.uk/sites/depic.eecs.qmul.ac.uk/files/AccessibleSpectrumAnalyser_draft1_64bit.dll" target="_blank">VST
plugin 64 bit for Windows </a></div>
<div><br></div>
<div><a href="http://depic.eecs.qmul.ac.uk/?q=system/files/AccessibleSpectrumAnalyser.component.zip" target="_blank">AU
plugin for Mac</a>, drop it in /Library/Audio/Plug-ins/Components</div>
<div><br></div>
<div>Usage:</div>
<div><br></div>
<div>You can select the range of frequencies you want to monitor by
setting selection-start and selection-size parameters. </div>
<div>For example if you'd like to monitor the frequencies from 20Hz to 1Khz,
you want to set selection start to 20Hz and selection size to
1880Hz </div>
<div>So once the selection size is set, by moving the selection start
parameter, you can scan the whole spectrum from low frequencies to high
frequencies. </div>
<div><br></div>
<div>Then to activate the sonification, you want to tweak the threshold
parameter: when any of the frequencies in the selection goes above the
threshold, the plug-in will beep at 440Hz plus one semitone per db
of difference between the frequency component and the threshold. </div>
<div>For instance if your audio has one frequency component whose magnitude is
-3db and you set your threshold at -2db you will hear an A#, which is
given by 440Hz (A) plus one semitone for the 1 db difference.</div>
<div><br></div>
<div>at the moment only the frequency component with the biggest magnitude in
the selection is taken into account for the sonification </div>
<div><br></div>
<div>dry and wet parameters are for volumes of the original audio and the
sonification respectively. </div>
<div><br></div>
<div><br></div>
<div>And now some questions if you'd like to answer any of them : </div>
<div><br></div>
<div>1) would you find this plug-in useful ? </div>
<div><br></div>
<div>2) would you prefer to have some indication in the sonification of where
the selection is in the total spectral range. For example I could use
panning </div>
<div>to indicate if the selection and hence the sonified frequency components
are towards the low end of the spectrum or the high end. </div>
<div>However this information might be redundant since you set the selection
yourselves and you know already where it is? </div>
<div>Another option could be to use panning to give information about the
location of the peaking frequency components within the selection. </div>
<div><br></div>
<div>3) would you prefer to have the sound of all the frequency components
passing the threshold in the selection rather than the biggest ? </div>
<div>In this case the sound would be made out of a lot of sine waves with
different pitch (one per component) and obviously the pitch would no longer be
linked to the difference with the threshold. I am afraid this would turn out
to be quite noisy though.</div>
<div><br></div>
<div>4) how easy/hard is it for you to handle parameters which such a big
range like the selection start going from 20 to 20.000 ? </div>
<div><br></div>
<div>5) Would you prefer to have a selection-end parameter rather than
selection-size or doesn't really matter ?</div>
<div><br></div>
<div>Thanks</div>
<div>Fiore</div></div>
<div><br></div></div>
</div></div><p>
</p><hr><span class="">
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