[Rwp] Accessible spectrum analyser
Chris Belle
cb1963 at sbcglobal.net
Thu Mar 3 13:03:09 EST 2016
Where you said the very right you put a left in there.
Just a small thing.
I think you meant to say right because high frequencies are on the right.
Anyway, thanks for your hard work, and who knows, maybe snow man will
get creative and do something with it.
'grin'.
On 3/3/2016 4:00 AM, Fiore Martin wrote:
> Hi everybody,
>
> Chris:
> it is exactly as you said: the higher the frequency the further to the
> right it is, and lower the frequency it goes to the left.
> Where did you spot the mistake ? In the webpage of the analyser I am
> saying that :
> the sonification is *panned from left to right* and the panning
> represents *the position of the peaking frequency* in the whole
> spectrum, ranging from 20 Hz on the very left, to 20050 Hz on the very
> right. For example, if the selected spectrum peaks at 50 Hz then
> you'll hear the beep towards the left, whereas if the peak is at 20
> kHz the beep will occur towards the left.
> Maybe not the clearest way to put it but I think here we were on the
> same page.
>
>
> Also : it's not possible to have the sonification going through a
> different sound card than the sound being analysed. However you might
> find useful to play with the separate wet and dry parameters to go
> some way into that.
>
> Hopes this is helpful.
>
> Thank you for your feedback.
> This project is now terminated so I am officially no longer working on
> this any more.
> I know that for those of you who are not programmers it doesn't make
> much difference but we released the source code as well.
> It's linked from the web page of the plug-in
>
> all the best
> Fiore
>
>
>
>
> 2016-03-03 8:08 GMT+00:00 Chris Belle <cb1963 at sbcglobal.net
> <mailto:cb1963 at sbcglobal.net>>:
>
> Well, the last point could be done by a time selection in your daw,
> and the table set to generate till the daw stops or something like
> that.
> Like a timed run of a specific portion.
> leave it to your brilliant mind to analyze and break all this down
> I like that table thing,
> and being able to change the resolution of what is analyzed would
> be great.
> I'm going to persevere with the current implementation and see
> what I can do with it.
> This is the first tool of it's kind I believe,
> we've had audio meters in hardware before, but it's nice now that
> the software ones are finally coming around to reality instead of
> just concept.
> I'm not a programmer, but in theory it shouldn't be hard to generate
> some kind of values which can be tied to text out-put,
> we'll never have it s good as being able to look at a graph, but it
> should be possible to link up something useful can you imagine as
> a programming guy how this might be done?
> YOu and this fellow would make a formidable programming team I bet.
> 'grin'.
>
>
>
>
> On 3/2/2016 2:20 PM, Snowman wrote:
>
> Well, here are my thoughts about this, for what it's worth.
> I find myself less able to make use of a real-time, dynamic
> audible output like this, especially while I'm also hearing
> the audio itself. But, also in general.
> To be honest, I wish this tool could generate a spectrum
> report, which would be a table of numbers describing a curve,
> showing how much peak, and average energy is in each frequency
> band, so you could study it, and learn where the peaks really
> reside.
> A constantly changing tone output has time delays associated
> with it, as you are aanalyzing the selection in real time.
> So, yeah, it takes a bit of concentration, especially for a
> partially tone deaf person, like me. I know, Not a musician
> any more. But, I still do audio production.
> If the tool would let me specify a bin size, maybe in hertz,
> or in octives, and the start and end frequencies of the
> spectrum I want to check out, much as it does now, except for
> the addition of the bin size. And then, produce a table of
> amplitudes, which generally show how much energy is in each
> bin, then I could understand what is actually going on.
> As it is, you have to violate the threshold before you get any
> indication that some coloration still exists.
> So, for example, I would specify start frequency, then width,
> or end frequency, and then bin size.
> So, Maybe I watch the area between 1k and 11khz, for a 10K
> total span, and I specify 100 hz bin size. so we divide the
> 10k span by the 0.1khz bin size, and then we generate 100
> values. The first value represents the amount of energy in
> the span from 1k to 1.1khz. By inspecting that table,
> manually, or witt computerized aid, I can find out which bin
> has the most energy, even if it did not violate any
> threshold. From that, I can rather precisely tell where I am
> sharp.
>
> The last thin is to somehow identify the portion of a track,
> or file, that should be analyzed.
>
> Anyway, that is what I hope for. More of a static analysis
> tool, instead of a real-time dynamic tool.
>
> I don't claim that the current implementation doesn't have
> value. I think it does. I just wish for this additional
> static data output.
>
> ----- Original Message ----- From: "Chris Belle"
> <cb1963 at sbcglobal.net <mailto:cb1963 at sbcglobal.net>>
> To: "Reapers Without Peepers" <rwp at bluegrasspals.com
> <mailto:rwp at bluegrasspals.com>>
> Sent: Wednesday, March 02, 2016 7:28 AM
> Subject: Re: [Rwp] Accessible spectrum analyser
>
>
> I think there's some slight errors in the documentation,
> you said left when you meant right,
> or maybe I don't understand correctly, but
> the way I grasp it is that the tone goes up in pitch as
> the volume of the peak goes up, and the position of the
> sound in the
> pan field changes with frequency, the higher the frequency
> the further to the right it is, and lower the frequency it
> goes to the left.
> Is that right?
>
> And you can select the starting point, and the band width
> of the frequency range that is being tested.
> I'm curious,
> can the beeps be separated from the sound of the audio
> your testing?
> Right now the audio jumps around in the pan field as well,
> and that is rather disconcerting if you are trying to
> listen to it,
> and find a hot frequency spot as well as hearing the beeps.
> So if it's possible to unlink the audio and the beeps it
> might be easier to work with.
> Just a thought, it may not bother others.
> Thanks for working so hard on this.
>
>
> On 3/2/2016 6:40 AM, Fiore Martin wrote:
>
>
>
> 2016-03-02 10:49 GMT+00:00 Chris Belle
> <cb1963 at sbcglobal.net <mailto:cb1963 at sbcglobal.net>
> <mailto:cb1963 at sbcglobal.net
> <mailto:cb1963 at sbcglobal.net>>>:
>
> Hey this is wonderful.
>
>
> Thanks!
>
> You're the guy who also developed the accessible
> peak meter thing
> too right?
>
>
> That's right. In fact the spectrum analyser came from
> the idea of using the accessible peak meter's very
> sonification into the frequency domain.
>
>
> If you guys haven't gotten that tool, it's really
> useful as well.
>
>
> On 3/1/2016 9:44 AM, Fiore Martin wrote:
>
> Hi all,
> just to let you know the Accessible Spectrum
> Analyser VST/AU
> plug-in is now available online for free at
> http://depic.eecs.qmul.ac.uk/apm/spectrum.html
>
> Accessible Spectrum Analyser makes
> spectrograms accessible
> using non speech sound to supports core
> activities in audio
> production.
> The plug-in was developed as part of our
> research on
> accessibility and cross modal collaboration at
> Centre for
> Digital Music, Queen Mary University of London.
>
> More info on the web page linked above
>
> thank you
> all the best
> Fiore Martin
>
>
> _______________________________________________
> RWP mailing list
> RWP at bluegrasspals.com <mailto:RWP at bluegrasspals.com>
> <mailto:RWP at bluegrasspals.com
> <mailto:RWP at bluegrasspals.com>>
> http://bluegrasspals.com/mailman/listinfo/rwp
>
>
> _______________________________________________
> RWP mailing list
> RWP at bluegrasspals.com <mailto:RWP at bluegrasspals.com>
> <mailto:RWP at bluegrasspals.com
> <mailto:RWP at bluegrasspals.com>>
> http://bluegrasspals.com/mailman/listinfo/rwp
>
>
>
>
> _______________________________________________
> RWP mailing list
> RWP at bluegrasspals.com <mailto:RWP at bluegrasspals.com>
> http://bluegrasspals.com/mailman/listinfo/rwp
>
>
> _______________________________________________
> RWP mailing list
> RWP at bluegrasspals.com <mailto:RWP at bluegrasspals.com>
> http://bluegrasspals.com/mailman/listinfo/rwp
>
>
>
> _______________________________________________
> RWP mailing list
> RWP at bluegrasspals.com <mailto:RWP at bluegrasspals.com>
> http://bluegrasspals.com/mailman/listinfo/rwp
>
>
> _______________________________________________
> RWP mailing list
> RWP at bluegrasspals.com <mailto:RWP at bluegrasspals.com>
> http://bluegrasspals.com/mailman/listinfo/rwp
>
>
>
>
> _______________________________________________
> RWP mailing list
> RWP at bluegrasspals.com
> http://bluegrasspals.com/mailman/listinfo/rwp
More information about the RWP
mailing list