Frequency Analysis in 5.5 (or not)

Hello,
Just tried using the frequency analysis window in 5.5 and find that:
only displays a graph when the CTI is moving by either clicking play or
moving it manually.
The Scan/Scan selection button is not active.
Live CTI is displayed in the upper left of the graph area.
A graph displays for a fraction of a second when the window is opened but so quickly
that I only noticed that after multiple tries.
Nice that it has 8 hold buttons but the only way I can get a display to hold
is by playing the clip.
Any info about this?
Thanks,
I

Thanks for your reply Ryclark.
Here's what I found this morning.
If I double click a clip in MT the file is opened in Edit Mode as always in earlier versions.
Then if I open the Frequency Analysis window there is no graph.
Until I select a different file.
At that point a graph is displayed and if I go back to the first file a graph is displayed.
Screen shots attached.

Similar Messages

Frequency Analysis on Adobe Audition CS5.5 for bioacoustics research

Hi everyone,
In need of some help.
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I have inserted a screen grab of what I mean when you "highlight the call".
Is there any way of doing this? I would be incredibly surprized if Adobe Audition does not have the ability to do so. But I have read through the manual and gone through a lot of threads and just can't find any information on it. Any help would be greatly appreciated!!!!!!!
Thankyou so much in advance
Bec.
p.s. Whilst Im asking, is there anyway to change the time format in the "Selection/View" box? Ive seen you can display it many many ways, but I need it in seconds, and the most sensible time format is mm:ss.ddd. Is there anyway I can change it to just ss:ss? There are a bunch of options for frame times, but nothing else for actual time.

becbioacoustics wrote:
I need to measure these calls. Basically I need the duration (seconds), minimum frequency (kHz), maximum frequency (kHz) etc.
I have played around with the Frequency Analysis tool in Adobe Audition, and this cannot compute these figures for me at all. In Raven, it was extremely user friendly, and all you had to do was highlight the call by moving your cursor over and selecting the call, and in the left hand window, it would tell you the min F and max F and duration for that swatch that you had highlighted. Is there any way of doing this in Adobe? I know you can visually see on the right hand side the Frequency axis- but it doesn't give you the exact frequency i.e. I need it to be to 2 decimal places eg. 2.12 kHz minimum etc.
I have inserted a screen grab of what I mean when you "highlight the call".
Is there any way of doing this? I would be incredibly surprized if Adobe Audition does not have the ability to do so. But I have read through the manual and gone through a lot of threads and just can't find any information on it. Any help would be greatly appreciated!!!!!!!
When you highlight a section, in the bottom right corner of the screen you'll find the timing section, and in there the box marked 'duration' will show you exactly how much time you've highlighted. In Frequency Analysis, the way to note highest and lowest frequencies is, unfortunately, manual and involves finding them with the cursor and noting the cursor information (under the display). If you open the advanced window, you'll get more information, including the level of the frequency at the cursor position. Also there's a bug in the display (or more to the point, the way it's calculated) which means that if you highlight just one section in the spectral view, this isn't what the Frequency Analysis display shows - I'm reporting that one.
p.s. Whilst Im asking, is there anyway to change the time format in the "Selection/View" box? Ive seen you can display it many many ways, but I need it in seconds, and the most sensible time format is mm:ss.ddd. Is there anyway I can change it to just ss:ss? There are a bunch of options for frame times, but nothing else for actual time.
No I'm afraid there isn't. I did try a cheat to see if I could at least get the timeline to do this, but that won't work either. Yes I think it should be there as an option too...

Frequency Analysis? How do I get frequency characteristics of a signal given in .wav format ?

I am new to Labview would really apprecite your time and help...
frequency Analysis? How do I get frequency characteristics of a signal given in .wav format ?
I have attached the signal I am trying to analyze.
Have nothing to offer in return but gratitude
Cheers !
Message Edited by Komal Khalid on 04-11-2010 10:59 PM

If you have labview 8.x or 9.x you can do this. Go to help in the toolbar. Select "Find Examples" and then search for sound. Locate the "Sound File to Sound Output.vi" This example will help in your task. Remember that Labview is shipped with a lot of useful examples. That can help you in your learning process
Good luck
Ps you can also read wav files, and find examples in Labview 7.x. But I do not know the name of the similar examples in 7.x
Edit: Please use zip files then you are not able to attach files. Do not link to sites outside. The site you linked to was very annoying. Could not download
Message Edited by Coq Rouge on 04-12-2010 02:38 PM
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)

Frequency analysis of time varying data

I want to add a routine for frequency analysis of before and after strong impulse on a body.
Some vibration sensors will be attached to the body.
In this case, I was told I need to use a time-varying method like wavelet or any other to analysis instead of simple FFT.
I installed wavelet package but I have no idea how to use it.
(Wavelet method seems to be popular in reduction of noise.)
Only what I want to know is the frequency elements in dynamics.
Can you recommend any tools (functions) for my purpose?
Are there some LabVIEW examples?
I am using LV2009 and some extra toolkits (developer suites).
labmaster.

labmaster wrote:
I want to ask some curious things.
1. I have to analysis the spectrum of frequency in dynamic signal.
In case of presenting dB, how to know the frequencies?
2. In high sampling rate (1MHz), the low frequency element can't be analyzed. (too small window for 60Hz in my last example).
If so, generally, do I have to down sampling to ~1kHz for the 1MHz in wavelet or short time FT?
Take a look on how the Express VI you are using are made. The Express VI you are using is located here
C:\Program files\National Instruments\LabVIEW 2010\vi.lib\addons\Time Frequency Analysis\_express\_TimeFrequencySpectrogramConfig.llb
The VI you need to open is the configure.vi. Copy this VI to your user.lib folder before doing any work on it.
To answer your first question. The dB setting will change the Y axis scaling, and not the X axis scaling. Which is the frequncy axis
The step between each frequncy bin will be( number of Frequency bins/(Fsample/2)). So using 1 MHz may reduce resolution. Perhaps 10 KHz will be bettter for you to use.
Besides which, my opinion is that Express VIs Carthage must be destroyed deleted
(Sorry no Labview "brag list" so far)

Time Frequency Analysis

Is there any way to perform time-frequency analysis(spectrogram ) in DIAdem? Ideally, I got like to play the waveform in one section of the VIEWER and other section of the VIEWER would have the spectrogram of the data within the band cursor.
Does anyone think this is possible in DIAdem?

Hi Neuropotential,
What you're asking for is possible, but it's not an out of the box feature. We have a posted example application for doing joint time frequency analysis in REPORT at
http://zone.ni.com/devzone/cda/tut/p/id/3549
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National Instruments

Joint time frequency analysis in Signal Express?

Is it possible to do joint time frequency analysis in Signal Express? I didn't see it in the Analysis section, so I'm assuming it's a separate tool that has to be added, if even possible in Signal Express. Help?
Solved!
Go to Solution.

SignalExpress does not natively support joint time frequency analysis. However, check out the Sound and Vibration toolkit which expands upon SignalExpress. It may do what you want.
This account is no longer active. Contact ShadesOfGray for current posts and information.

Problems with Frequency analysis

I use the frequency analysis a lot for comparing specific points on similar tracks. Every once in a while, the freq anal will stop live-updating. In fact, it will not register a changing in the cursor position on the edit or spectral freq view at all. Has anyone had this problem and found a solution?
Thanks,
Senluga
ps, I have tried lowering the FFT size to no effect.

If you want to have the 'good frequencies', you must set your dt.
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Jerome LANGE
Strasbourg
[email protected]
"Colt" a écrit dans le message news:
506500000005000000EB7B0000-1021771306000@exchange.ni.com...
> When I make for example an FFT, i want to see the frequencies on the
> x-axis which are in the signal.But in my Labview Diagramm the values
> on the x-axis have nothing to do with the frequencies in
my signal.The
> FFT seems to be correct,but the x-axis doesn't show what I want to
> see.I don't know what I have to change. In some NI examples it
> works,but I can't see why.

Adobe's Frequency Analysis-VST VERSION

I really like the way you did about frequency monitoring in AA 2 or 3. And, to be honest, I'm used to it pretty quickly.
But, for some reasons, I am moved to another DAW. I have tried a LOT spectrum analyzers, tried all the best vst in this direction, and all they did not come close to subject.
So my predictable question to Adobe's developers: Can you make VST version of frequency analysis, that contained in Adobe Audition 2/3? I'm really sure, that this idea will become popular and will get high demand. Thanks, I look forward to your wisdom.

]i[ona wrote:
Yeah, I see. Strategy for profit. But if take a look on the other side, it could've been the most powerful and popular plug-in in spectrum analysis, which could earn more money than AA that losing popularity to date.
Since Audition's sales figures appear to be rising, not falling, and nobody else seems to be that desperate for another spectrum analyser, I don't see the argument...

I am trying to configure my SCXI-1540 card for excitation voltage and frequency using MAX - but it is not giving me that option when I click on the card and then properties, am I looking in the wrong place?

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Jeremy, Thanks for the reply.
I tried to set up the system as DAQmx.
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It didn't seem right that the system should behave that way, but I pressed onward.
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log>>Strain
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I had included the system report of what programs I am using, etc. as attached file nireport.txt
After the DAQmx did not work I tried installing everything as Traditional DAQ and it did let me set-up the 1540 Card with Excitation Voltage and Frequency and gain - I then went in to the VI that I had built and tried to use the Express DAQ Assisant to read the channel that I am connected to on the 1315/1540 - when I try to use DAQ Assistant it gives me an error saying that "Device not available in NI-DAQmx. It is possible that the device is being use by traditional NI-DAQ"
Which I guess it is since both configurations are now set-up in MAX.
I would PREFER to use the DAQmx set-up, but I am confused as to WHY it won
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Thanks for the help so far! As you can probably tell I am new at this.
Ryan
Attachments:
nireport.txt ‏2 KB

Issues with Single Frequency Analysis

Hi all,
I recently installed multisim 13 on a new computer. I went to do a simple single frequency analysis of an RC circuit and got some funny results. The magnitude of the voltages measured by the probes seem to be off, and I have never experienced this on any other computer I have used. I have tested it in multiple circuits and always get the same problem. I was wondering if there is some setting I am missing that will change this, but I have searched forums for two days now and haven't come across this particular issue. I have attached some images to show what I'm describing.
Thank you
Attachments:
circuit.JPG ‏33 KB
output.JPG ‏56 KB

It looks to me like it's working properly for the default source "AC analysis magnitude" (1Vp). How did you get the source to say "VRMS"? What version of Multisim are you using?

In solman_workcenter - RCE- E2E analysis tabs change,trace is not appering

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Frequency analysis of vibrations

Hey guys,
I have a "little" problem.
An emetted vibration is captured (with a laservibrometer) and the signal should be analysed so that
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See the example of signal below
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Attachments:
test[1].vi ‏146 KB

There are several FFT VI's. Probably the best for your case would be a power spectrum.
-Matt Bradley
************ kudos always appreciated, but only when deserved **************************

I am using a DAQ board to get the singnal now i need to perform frequency analysis and this system doesn't employ any filters etc it's just a signal

Iam using AT-MIO-16E-2 board to retrieve the signal now i need to perfrom a frequency analysis and this process doesn't employ any filters etc.

There are a lot of shipping examples that you can look at. They're under Analyzing and Processing Signals>Signal Processing. There are software filters and window functions that you can use but if you are having aliasing problems, then the only thing you can do is add hardware filtering.

Understanding Frequency Analysis

I use Adobe Audition CS6 to generate abstract tones (normally between 400 Hz and 2000 Hz with 1 or 5 harmonics). For tones with 5 harmonics, when I create them there are 5 obvious power bands in the spectral frequency window, and when I do a frequency analysis (Alt-Z) there are 5 obvious spikes and nothing else. However, when I open the same sounds later on, and perform the same frequency analysis there are many other spikes present (though at lower powers than the 5 I specifically created). Why are these harmonics showing up in saved sounds? I do equate the sounds for Total RMS, does that have anything to do with it?

If you store 5 tones (let's say 10 seconds) with the tones at a reasonable level - let's say -10dB - and save the file at 16-bit depth, and select the whole file to analyse, you'll see pretty much what you'd expect/
But, what you see depends to a large extent on the FFT size you are using in the analyser, and sometimes with tone generation having the very start of the file included can do strange things to the results. If you select a reasonable section of your 10 sec file with an FFT of 8 or 16k, you'll end up with a noise floor sitting at about -120dB across the spectrum and your tones pretty clearly defined. The smaller the selection you make, the more the noise floor gets bumpy (when you hit the analyse button, the noise in the selection gets averaged out, and the more there is to average, the more it comes out to a fixed value). If you measured the SNR using the meter, you'd have a noise floor around -96dB, which is the value of all of the 1/Hz noise @ -120 dB added together across the bandwidth, and this works out to 6.02dB/bit. So the same sound saved as an 8-bit file will have twice as much background noise.
Also, you have to bear in mind that there's a difference between stopping the cursor at any point and looking at the results, and analysing a selection. Even analysing a short selection will give you a much more accurate representation of what's actually there.

Frequency Analysis - batch automation Query

Hi,
I was wondering if its possible within adobe audition to automate a process of performing frequency analysis on a batch of audio files and saving the frequency analysis windows in individual bmp files?
There is a file batch utility which I am aware of for processing groups of files. However with the frequency analysis window - the only way of saving this window is by Alt-PrintScreen and manually saving file to another bitmap package.
Is anyone aware of a way/system/tools of achieving this ?
Thanks for any suggestions
- Darragh

ok, thanks for the tip.
Date: Wed, 22 Jul 2009 17:54:18 -0600
From: [email protected]
To: [email protected]
Subject: Frequency Analysis - batch automation Query
There's no way of doing this within Audition, but I think that there are external batch process programs that might let you do this using Audition - if you see what I mean. I don't personally do things like that, but maybe somebody who does could recommend one? Alternatively, and probably rather a better bet, re-ask the question on the AudioMasters forum. You are more likely to get a meaningful response, quite frankly.
>

Frequency Analysis in 5.5 (or not)

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