Analysis of a MIC

i want see the results of some MIC say length of rod for last 10 lots in graphical view.
how can i?

Hi,
You can do this in QE02 with the histogram. But to run this chart you need to have the following pre-requisites.
1.The confirmation of measured values must be supported.
2.Individual results or classed results must be supported.
3. At least one valid value must have already been recorded.
Hope this helps.
Prakash

Similar Messages

MIC / VENDOR Trend analysis in Graphical mode

Dear Freinds,
please explain me how top perform trend analysis in graphical mode for a material procured from a vendor over a period of time.
Report should display the charecterstics recorded for Material / Vendor combination.
I am not using SPC charecteristics.
regards
jeevan

Dear Jeevan
There are two ways in which you can do the graphical analysis for material vendor combination
1) You can do it in MCVD. Here you can get all the relevant mics in the desired combination
2) But a better graphical analysis can be done in QS28. But here you will have to specify the MIC.
Go to QS28. Input the plant and the mic and execute. You will get MIC details. Choose the MIC and click on Result history. A pop will appear Result history Limit Selection. Here you can mention the vendor . Execute you will get the entire list of lots with all values and charts. You can run chart, histogram, cp , CPk values. Run chart for mean, runchart for single values etc
You can do this through the inspection lot also. Go to QA33 > result> Select the Mic> go to Result history >enter the vendor. Execute you will get the entire list of lots with all values and charts
Hope this helps
Regards
Gajesh

"Using the harmonic analyser to determine the musical note of sound input from a mic and soundcard"

"Hi there, I am currently trying to extract what musical note is being sung via a mic plugged into my soundcard and using the harmonic analyser VI, I am experiencing problems however, as the fundamental frequency output does not always match the note being sung. Does anyone have any ideas why this may be? I initally thought it may be due to aliasing occurring but this is compensated for in harmonic analyser VI! If anyone has any suggestions I would be extremley grateful. Thanks
Em"

[posted and mailed]
em wrote in news:5065000000050000009F680000-1012609683000
@exchange.ni.com:
> I'm pretty sure it would work fine with pure tones (although I do
> intend to test this), my problem really is how to fix it so that it
> can work with voices! One idea I thought about was to apply the
> A-weighting to the waveform to more accurately model the way a human
> would hear the sound, but I'm not sure how much difference this will
> make, any other suggestions would be very useful.
> Thanks
> Em
Rob Cole is right, your question is one that has a lot of potential
answers.
Here are a couple of notes / thoughts:
A-weighting probabably won't help much for your particular app, as it
sounds like your are more interested in tone detection, rather than
modeling how a human would hear or compliance with a standard.
Probably the most likely reason you are seeing the fundamental frequency
vary is that you are measuring a real-world signal that is a human voice.
Even though your singer may be singing a constant note, the frequency
content will vary somewhat--your singer is an imperfect boilogical
system. (Nothing against your singer in particular--no signer is
perfect!) Also, as Rob Cole pointed out, your singer's note isn't a pure
tone at all, but a collection of harmonics that you perceive as a note.
Regarding aliasing, it's important not to confuse any algorithmic
compensation (applied after a signal has been sampled) with true alias
protection. If you are using a sound card, it likely doesn't have
hardware-based alias protection. The only way to ensure that aliases
don't intrude on the frequency span of interest is to apply a hardware
filter prior to sampling your signal. Such filters can be added to the
front end of a DAQ board or come built-in with DSA hardware such as the
NI 4472. The software alias-related functionality of the Harmonic
Analyzer VI's simply excludes signal content that exceeds the Nyquist
rate in the distortion calculation.
I'm not sure specifically which VI you are referring to, but the SINAD
and Harmonic Distortion Analyzer VIs from the waveform analysis palette
use a tone detection algorithm to find the fundamental which is the same
as the one found in the Extract Single Tone Information VI. All of these
VIs include an advanced search input where you can specify a guess for
the frequency of interest and a range (as a percent of the sampling
frequency). You might try to narrow the search from the "try everything"
mode (-1 in the approx freq.) to something with less span around the
expected freq range.
Take a look at the power spectrum of your signal and verify that you see
a distinct, time-invarient peak where you expect your fundamental. My
guess is that you don't. I've whistled into a mic enough to know.
A final suggestion is to increase the duration (# of samples) acquired in
your acquisition. When you do so, you increase the duration of the signal
window that you analyze. If your signal shows slight frequency variation
over a given period of time, they can tend to average out with increased
duration of the signal that you analyze.
Hope this helps!
--Sam

MICs duplicated in COA (Certificate For Analysis) for Finish Product.

Hi, Champions,
I have problem in printing COA:
We are using TL type "Q" inspection plan.
         Operation:1 Chemical Test
                       MIC:0010 Test-1
                       MIC:0020 Test-2
         Operation:2 Physical Test
                       MIC:0010 Test-1
                       MIC:0020 Test-2
                       MIC:0030 Test-3
Manageing individual COA profile for each Material.
We have customized COA report.
When we are trying to take printout from it, it is printing the COA for all the Operations two times. Means one more time then it is there in the Task List.
The parameters for the COA Profile are as below.
      1. Level for Result Selection: - Summarized
      2. Origin of the Characteristic Result on the Certificate: - Inspection Result.
      3. Origin of Characteristic Short Text: - Master Inspection Charecteristic.
      4. Origin of Inspection Specifications: - Inspection specfication from QM.
      5. Output Strategy for Skip Characteristics: - Text from text element of function group.
Pls let me know, where is the possibility of cause for this descipancy in COA.
Regards,
Shyamal

Hi Craig,
Thanks for your involvement.
The layout that is generated by QC21 was no where meeting the requirement. So layout was configured. Then data was there in big number of verity hence all the detrails was requried to be fatched from Inspection plan itself. Not from MICs (QS21,,as STD report does).
These were the circumstances. And it was propoerly tested and is working fine also.
But recently we had SAP GO LIVE for, two more mfg facility(Plant) and it is showing this bug overhere only.
But any ways thank you all for kind support.
Regards,
Shyamal

SPC chart for Qualitytative MIC?

Hi All,
1)Please suggest me SPC chart will also valid for Qualitytative MIC?
2)Whats are ohers charts are possible in QM?
Regards,
sid

Per my knowledge, SAP does not have SPC charts for Attribute / Qualitative characteristics. Even if you want to do the analysis outside of SAP, through QM - STI interface, this interface does not support qualitative characteristics.
Other charts you have is Histogram, Run charts. If you are in higher versions of SAP (EHP 2), SAP has given a new **** pit for evaluations, you can access it thru QGA4. Check OSS, SAP has released a consulting note on this. You can do variery of analysis and various chart options are available in this **** pit.
I hope this helps.
Thanks,
Ram

Analysis not working.. Clicks and Pops, etc.

I'm trying to remove clicks and pops, clipped signals and power line hum from an audio track (registered using an iPod mic in a big room so it's full of noises) with the latest Soundtrack Pro 2-
I did a Noise Reduction then applied the following Analysis: Clicks and Pops, Power Line Hum, Clipped Signal. After the processing, I click in each item in the list and fix it. The problem is that 90 per cent of the times the Click/Pop/Clipping is not fixed. I can see it alters the waveform but you hear pretty much the same thing as before...
Do you have any experience on that?
Thanks

This is a tedious process you're trying to do. What it really comes down to is zooming out the audio until you have clicks and pops of about .5-1 sec. Then you really have to go over and over the really bad ones until you've covered it from all angles. What ultimately happens is you reveal layers of the pops. As you take out one layer another appears. When you isolate the problems they all begin to fix easier. The program is really very adept at finding the rest of a pop that only appeared partially on the surface at first.
Good question - patients is a prereq. virtue here: Good Luck.

Question about octave analysis

Hello !
I have the following question about the octave analysis vi's.
When the single octave analysis is made, shouldn't there be 3 bands below 100 Hz ?
According to the octave analysis subvi, the bands should be located at 16, 31.5 and 64 Hz.
I've tryed to make a comparison between octave, 1/3 octave and 1/24 octave.
It seems there is no difference.
I'm running LabView 8.5.1 with SVT 6.0 on windows 7 professional.
This is not happening. See the attached vi for an example of the problem.
P.S. : The file Engine runup is a sample. please rename extension to WAW.
Thank you.
Attachments:
Engine Runup (mic).wav.jpg ‏235 KB
Sonometru.vi ‏330 KB

I also have problems with octave analysis, I'm making the acquisition of a pink noise from my audio card and checking the response curve through an analysis of octaves, to obtain a flat response curve, I need to set a number of samples of at least 88200, but this way I can not get a high-speed acquisition, only about one aquisition/second, putting a value of 2000 samples the speed is adequate, but the response curve in octaves loses response below 1000 Hz gradually until around 20 Hz is practically nil, I need help please.
best regards.

Wind on mic filter in CS3 ?

Hi,
Some of my early footage taken before I expected to start filming and before I attached the furry mic for such, sees that explosion sound effect one gets with wind on a non furry built in camcorder mic !
Is there a filter or something in CS3 that will strip that out of the sound and retain the voices etc, perhaps analysing the sounds going on before and after the gust of wind ?
Regards
Envirographics

Harm,
I do agree that proper capture, of either Video, or Audio, is always the best course. It makes post so much easier.
Now, I've used a "blimp" and a "barney," but never a Zeppelin. I guess that so long as it's not a Led Zeppelin (unless one is into retro-rock), it'd be the same thing. [Grin]
I still get shivers, when I do NLE and digital Audio work, thinking about the flaming hoops that we used to have to jump through, in the days of film and total analog. Still, proper technique is the first defense to fixing it later.
Hunt

I disabled stereomix to use mic only, now stereomix seems deleted??

While testing 'n configuring web streaming, (took ages, so I dont really want to do restore point) I disabled the Stereomix, cos it seemed like it was conflicting with the mic. But I only disabled it! Now it is gone-deleted-cant find it anywhere. HP, made me DL software to analyse missing drivers, only to come back n say my warrantee has expired. Can anyone help to find a way to get the stereomix recording option back, without a restore point. Will that work anyway? I may need to. Disappointed at HP, for making this harder than it needs to be, butits my own fault. I cant see it in devices, or in Control panels realtek HD audio manager only has the mic now. Im so mad. I only disabled, no warnings came up at all. Help please.
Compaq CQ105TU // 2.1 intel dual core // 2GB Ram // 500GB HDD // 16mnths old.
This question was solved.
View Solution.

Thank god I have found the driver. Insead of taking the "HP" option of D/Lding their software to go through my PC to find missing drivers, I instead searched manually for it, and found it quite easily. No, expired warranty problems, But it was a big download. 115mb's. But Im very happy, I have an updated version, WITH my stereomix option back. "sp54986.exe" to be exact. Happy happy happy. I shouldve persisted before posting, but got frantic when HP ran me round in circles, after a couple of hours looking on my PC for the missing stereomix, Still.... It is a worry, that a simple disable, can do that vanishing act on me. Or was it just hiding somewhere? I dunno. But I think it was really gone!! Like me now, finally. Bye All. (Thanks 4 sfa HP)

Iphone input mic-olume spectrum

I'd appreciate any expert's help,
I'm trying to trigger an event when a user stops speaking.
My approach is to trace a single input audio volume-level integer and to measure it through time.
I've looked into the aurioTouch and speakHere example.
The first utilize an FFT buffer which get parsed every time it is fills - i couldn't see how to determine the volume of the speech from it. The second doesn't do any sound analysis.
Do you know of a way?
Is there a mic-incoming-sound-level hidden var?

If you are still having the problem, this might help.
I just ran into the problem and it turned out to be lint ....
http://discussions.apple.com/message.jspa?messageID=9128049#9128049

Siri siri cannt hear me and cannt recognize voice but when i speak verey close to the upet mic putting my mouth on start to record waves

siri cannt hear me and cannt recognize voice but when i speak verey close to the upet mic putting my mouth on start to record waves

well then you probably have a microphone problem (Siri uses the 2 or 3 different microphones built in the iPhone to analyse the sound and get the best sound possible. you probably got dirt in one of them. I suggest bringing it to a repair man (or phone Apple support if you can't find any ADVISABLE repair shop) and tell him what i told you.

IEPE Mic Sound Level Error

Hi All,
I have recently purchase the Sound and Vibration tool kit for LV8.6 for making (surprise, surprise) sound pressure and vibration measurements on an enclosure that houses a variable speed pump. I use a cDAQ chassis with the 9233 IEPE module and an ACO mic/pre (model 7052SYS). The mic is IEPE, of course, with a specsheet sensitivity of 20mv/Pa.
I am getting started using the S&V example vi named DAQmx Sound Level Meter. When I set up the AI mic channel to the 20mV/Pa sensitivity, I am still seeing large error in my measurement as compared to calibrated handheld sound meter. In specific, the room ambient noise is ~32.9dBA as measured with the Extech handheld meter. The VI and IEPE mic set-up reports this as ~39dBA. The error when noise is introduce sometimes gets a little closer, but the two do not agree.
What have I overlooked? The IEPE mic is new and has factory cal certs so let's assume this is not the issue.
Thanks for the help!
-JD

JD:
That indeed could be a potential source of the difference between the readings. To know for sure, you would need to do a spectal analysis fo find the energy content across the frequency bands.
If you have a quiet chamber, you could possibly generate a single tone frequency (at multiple freqeuncies within the range of both meters) and then compare the meter readings.
-AK2DM
~~~~~~~~~~~~~~~~~~~~~~~~~~
"It’s the questions that drive us.”
~~~~~~~~~~~~~~~~~~~~~~~~~~

Analytical Mic Input for iPhone 4?

I have several mics that are high end for acoustic analysis. They all have phantom power supplies. They all connect via USB to any Mac for use on audio analysis programs. The iPhone has some available but they are not much use with the built-in mic.
They basically convert to digital going into the computer on the USB line. The line also provides 5V for the phantom power supplies (actually converted up to 48V in the supply for the mics).
So how does one get the USB connected to the iPhone where it needs 5V and some sort of USB to iPhone connection?
aehaas

One doesn't unless it is made for the iPhone and the 30 pin connector.

Spectrum Analyser Programme

Hi
I want to view the spectrum of a sweep sine signal from 100 to 1000 Hz. I am taking the input signal (from a mic)through an analog input of a M6259 DAQ card. I am using Labview 7.1. The spectrum analyser programme I have made omits some of the signal and I get a sine+square with some jitter. I would be greatfull if some one can some one check this.
Thanks
Mal
Attachments:
Spectrumanalyserfor speaker.vi ‏132 KB

Hi Mal,
From the looks of the signal you have there, the card is only acepting
a 0-10V signal. If you go into Measurement and Automation Explorer and
use the Test panel do you get the same result? Can you check the signal
on a scope or something to make sure its correct?
Regards
Jon B
Applications Engineer
NIUK

Logic Mics, Aggregate Devices and The Input Issue

There is a lot of discussion about Logic's inability to accept simple microphone inputs, and I ran into this for two frustrating DAYS of trying all the things in the Logic Express 8 Docs to fix it—to no avail.
But now it is solved, so I'm trying to create a DEFINITIVE list of steps and principles here so others may quickly blast past this issue.
The equipment I have seems to be emblematic to the problem. The Blue Snowball is one of those USB mics that simply doesn't automatically show up in Logic's Preferences > Devices > Core Audio >Device list. The fix for this is never mentioned in the Logic manual or Getting Started docs that I can find. There is a passing reference on page 100 that is virtually zero help, and does not bother to mention how this Prime Gotcha can bring you to your knees.
Principle #1: Logic uses the Preferences > Devices > Core Audio >Device (list) process to identify which microphone you can record with. The list has to have in it an entry that makes sense for both the incoming audio and the playback path that Logic uses to feed earphones or an external monitor.
Normal items on that list look like this:
Built-in Output/Line Input
Built-in Output/Digital Input
Built-in Line Output/Input
Built-in Line Output/Digital Input
Built-in Digital Output/Line Input
Built-in Digital Output/Input
The Built-in Output is the computer’s inner speaker or headphones. The Built-in Line Output is the computers stereo jack for feeding to an amplifier. The Built-in Digital Output is the fiber optic feed that can also feed an amp with up to six parallel audio channels (okay, 5.1 channels).
Nothing on that list will show a fully functional USB microphone that is being viewed on the computer’s System Prefs > Sound > Input page, even though the metering dots there show that the computer sees a live, active microphone.
Selecting the Mic in the Sound prefs page does nothing to pass it on to the Logic > Preferences > Devices > Core Audio >Device list of selectable items. This is frustrating, since GarageBand sees the live mic without any problem, but GB is a simpler program that has fewer options while Logic has many other potentials, so a one-size-fits-all solution may not be its best default setting.
To get the mic into Logic, you have to go into the Audio MIDI Setup utility program where a peculiar option appears that is called “Aggregate Device”.
This keyword is not found in the Mac docs, and understanding it seems to be a big secret. Even the Audio MIDI Setup help page will show you how to find it, but not how it works or how to use it for Logic. Ahem.
You open Audio MIDI Setup and under its header bar Audio is only one item, sure enough, Open Aggregate Device Editor. That opens a window that has two sections, an upper window with Aggregate Devices / In / Out across its top, and a lower window that shows all the options that the computer is aware of. The lower window is called “Structure:” and columns show Clock / Use / Audio Device / In / Out / Resample.
A default item “Aggregate Device” shows in the top panel, and you can add others and double click on one to change its name. You can make many variations here.
By default these will be present:
Built-in Line Input
Built-in Digital Input
Built-in Output
Built-in Line Output
Built in Digital Output
At the bottom of this list any other audio input devices that are plugged into the computer should show up. If they can be seen in the System Prefs > Sound > Input page, they’ll be here, too.
When I plug my Blue Snowball USB mic into the computer, it shows up here as Blue Snowball.
You create an Aggregate Device by clicking on your sound source, in my case, the Blue Snowball, then adding one or more other options.
When you click the Use check box for any entry, it pops to the top of the list.
Principle #2: An Aggregate Device is used by Logic to “see” both an audio input and an audio output path at the same time. The Device you’re creating at this point must include an input Audio Device AND at least one Output item to be fully functional for Logic. A Help page in Audio MIDI Devices called “Combining multiple audio devices” explains this in bare bones, but you can’t see that help page unless the Audio MIDI Devices utility is open.
In my case, I’ve checked the Blue Snowball and Built-In Line Output, so I can use that combo in Logic to define where the mic is coming from and where the Logic audio output should go to my line-input amp and speakers.
In the Audio MIDI Setup utility, simply selecting the Blue Snowball as the “Default Input:” device and/or the “Properties For:” options shows that the Audio Output area of the page has this cryptic message: “Output is not supported.”
At this point, you’re almost ready to go, and you can close the Audio MIDI Setup utility. But there is at least one more “gotcha” to conquer.
Principle #3: Logic ONLY looks for its list of usable Core Audio Devices when it starts up. If you have it open right now, all the choices made for Aggregate Device will not show up as selectable. Save any work in Logic, shut it down, then boot it up again.
Now you can use Logic's Preferences > Devices > Core Audio >Device list to see your Aggregate Device. I’ve named mine “Snowy Line Out” to trigger my recognition of what it contains. Another one is called “Snowball + Line + Digital” and it has both line and digital outputs aggregated to the Snowball mic input.
You can make one in the Aggregate Device Editor that combines a microphone plus earphones (Built-in Output) plus Line and/or Digital Outs, too. You'll have to switch among them in Logic as you work, but each will carry the live mic direct to recording.
I hope this gets you through the frustration of not knowing what to do when confronted with the lack of clear docs and complete steps to get a USB mic or other seemingly opaque input issue. Feel free to add to this so others in my former state of bewilderment can gain understandings.
If Steve Jobs were to encounter the level of opacity, ambiguousness and frustration that setting up a simple USB microphone can create in Logic, you can bet that the several programs and their intimate interdependency would be either automated or fully explained in the documentations that followed his fiery analysis of the issue.

I don't know of another way to get the Blue Snowball USB mic to show up in Logic. If you can do it without having to go through the Aggregate Device route, feel free to post here how to get that to happen.
I didn't have a different mic available when I started trying to do what seemed to be the simplest of things -- record and play back an audio track -- and nothing else seemed to work.
There are a lot of Aggregate Device threads around here, many associated with Blue Snowball, Blue Snowflake and other things, but none of them laid out the principles of how Aggregate Device Setup needs to work or what to do to force it into compliance.
As I said, the clues in the Logic docs and in-mac docs are minimalist, at best, none of them bringing instant head slaps of success readily.

Analysis of a MIC

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