Scaling Voltage to different sound frequency and decibels

Hello:
I am trying to figure out how to convert (voltage samples) to play different frequency of sounds (e.g., at 1 voltage have the play waveform.vi have a different pitch than another voltage let say 2 V). Additionally, I also want to configure the "Sound Output Set Volume" to change the volume of the output based on the voltage also. Any insights to these problems would be greatly appreciated.

Not quite sure what you mean. Sounds like you want one voltage to control both the frequency and the volume at the same time. Do you mean two voltages?
If that's the case, you need to define a function that will relate the input voltage to the output frequency, something like f = 4000*V (for a five volt scale), and something similar to volume. Do you have that or am I misunderstanding your question?
-Matt Bradley
************ kudos always appreciated, but only when deserved **************************

Similar Messages

Different Compounding Frequency and Capitalization Frequency for SAP MM Instruments?

For Intercompany loans with Interest Capitalization Scenarios, I have some loan instruments with Monthly interest compounding and annual Capitalization frequency? How can you achieve that in SAP Transaction Management ?
By default, things are straight forward only when both match?
Any help will be greatly appreciated ?
Renatas, I don't know you but I have a strong appreciation for your competence.
Regards,
Rahul

If both are different different scenarios, then it can be achieved. But as Grigoriy asked for the clear example, I am also confused.
So give the clear example.

Randomize sound Effect and play effect from a spinnerList

I have two separate questions:
I have 8 different sound effects and a spinner list, in simpler terms, what do I need to do to assign 1 sound effect to each of the selections on the spinnerList, and then have the corresponding sound effect played when the user presses a button?
Secondly, what do I need to do to make it so that every time a dofferent button is pressed, it plays a random one of those 8 sound effects?
Some sample code would be great. Thanks.

The basic approach to picking something randomly:
// here's my array of items to choose from
var strings:Array = ["a", "b", "c", "d", "e", "f", "g", "h"];
// pick one of the items randomly
// Math.random() gets a random # n where 0 <= n < 1
// Multiply by array length to get a random index
// Math.floor() makes it an integer index where 0 <= n < Array.length
var s:String = strings[(Math.floor(Math.random() * strings.length))];
HTH,
-- Tom

How to merge to frequencies together and play it? I have a program that outputs two numbers everytime and those numbers in Hz. I want to merge those two different frequencies and play the sound.

Hi there
I have a program that reads from a table done in excel and finds two numbers from the table(they're different all the time). Those numbers are represented in Hz. What I want now is how to merge those two numbers as frequencies and output them and hear them from the speaker as audio. I also have the part of hearing them done but I can't figure out a way to have it connected so that it doesn't matter which numbers come up, it'll update it accordinaly. I appreciate any helpers.
Thanks a lot

Then I'm not sure what you're doing, or what your definition of "add" is. Here is the example I posted, with Signal 1 at 250 Hz and Signal 2 at 500 Hz:
Message Edited by smercurio_fc on 01-15-2009 03:46 PM
Attachments:
add freqs.png ‏25 KB
add freqs.vi ‏123 KB

Can windows xp use a different sound card for itunes - I want to use a sound card for itunes and another for all other apps

Can Windows XP use a different sound card for itunes - I want to use a sound card for itunes and another for all ther apps

To the best of my knowledge, Windows is not capable of setting a specific sound card based on the app being used, it's all or nothing.
Try a google search or search the Microsoft site.

Satellite A300 - Different sound in PSAJ4E and PSAG8E

I have two Toshiba Satellite A300. One is A300-15K (PSAJ4E) and has Conexant driver instaled. Second is A300-20E (PSAG8E) and has Realtek Semiconductor Corporation driver.
The sound comming from harman/kardon in the first is beautiful and in the second much worse. I tried to install Conexant drive in the second Toshiba but it doesn't work. I tried sound setup but without positive result. My system in both Toshibas is Vista 32 bit. Are there any possibilites to improve the quality of sound in the second Toshiba?
Thanks

>The sound comming from harman/kardon in the first is beautiful and in the second much worse.
Satellite A300-20E support HARMAN/KARDON speakers and Realtek sound chip.
The Satellite A300-15K supports HARMAN/KARDON speakers as well but it supports Conexant sound chip instead of Realtek sound chip.
The Realtek HD audio manager is installed on notebooks with Realtek sound chip and can be found in control panel.
There are different settings which could improve the sound quality.
The Conexant sound chip does not support such HD audio manager and I think this might be the reason for the different sound.
Greets

Playing a sound in a given frequency and it paly at given time

Hi,
Iam pradeep i had a problem to produce sound at given frequency and it play at given time.
Please help me to do that program.
i tried using sound api

See your other thread, same topic, thanks.

Is it possible to play different sounds for emails and instant messages ?

Hello,
I was wondering if it was possible to play different sounds for emails and instant messages. I am using Thunderbird quite often with both emails and instant messages imported from Gtalk.
I think it would be very convenient to be able to distinguish both sounds as they do not imply the same things.
Thank you very much.
Olivier Hubert.

There are only six chat add-ons, three of them are about notifications. Pick one you think will do the job for you. https://addons.mozilla.org/en-US/thunderbird/extensions/chat/?sort=popular

There is no sound generated by Beep.VI when using frequency and duration time. why? Thanks

Hi,
I want to generate some beeps with certain frequency and duration time.
Setting "use system alert? (T)" true, I can hear the beep; Setting "use system alert? (T)" false, certain frequency and duration time, I can't hear any sound. Why?
attachment is the VI.
LabVIEW 8.2.1, WinXP
Attachments:
BeepWithFreq&Width.vi ‏8 KB

Your PC speaker only covers certain frequencies.. Mine goes as low as 37 Hz, which I cannot be distinguished from other lower frequencies. I have to go up to 80 Hz before hearing any difference. I can hear up to 14000 Hz and barely 15000 Hz. Now, you cannot compare this with a Hi-Fidelity sound system..
As for setting False, it will not play anything. So all appears normal.. And of course, if it does not play anything, the duration setting is ignored..
R
EDIT: I just read the othe people's posts.. The frequency & duration settings work fine on my machine. It is a PC, running Win-XP.
(Finally, I can say something positive about a PC running XP.. )
Message Edited by JoeLabView on 08-04-2008 06:13 PM

How to capture sound by sound card and convert it into frequency value

As the title mentioned, i wan to detect the frequency value from a sound and find its peak frequency, any solution and suggestion? Thanks alot 1st...

i tried get the sound from the sound card and display as a graph, but it a bit slow responce. and now viewing example on the FFT example...

A slice of low frequencies and A strangled sound

Good afternoon!
My Envy dv6-7377er has a problem with the quality of the sound.
When I connect the laptop to the amp, I notice a slice of low frequencies and A strangled sound.
When I connect my old computer or CD is no such problem.
No "Beats" equalizers do not eliminate the problem.
What should I do to get good sound?
Sorry for modest vocabulary and bad grammatik, I'm from Russia, and can not clearly explain the problem.
But I beleve, you uderstand me.

Hello Oleg_P.
You should try removing the driver and allowing the operating system to reinstall it. Try the following.
Navigate to your Device Manager.
Expand the "Sound, video, and game controllers" section.
Right click on your sound card and select "Uninstall."
Reboot the computer and allow Windows to complete the reinstallation.
Post the result.
Have a great day!
Please click the white star under my name to give me Kudos as a way to say "Thanks!"
Click the "Accept as Solution" button if I resolve your issue.

Why is the sound quality and volume in itunes so different than when I use other media players

This is an issue which has been vexing me for some time. I've researched it all over the web and have not found a worthwhile answer. Some other posts on these forums have asked similar questions without successful answers. But, none the less, I will try...
I have spent a lot of time over the last two years trying to get my itunes library organized as well as getting good digitized versions from my vinyl records as well as CDs. I was pleased with my results and then I added the songs to itunes. I could not believe how inconsistent the sound quality was. Invariably the volume is always lower. [Please do not post a reply such as: Check the volume controls in itunes proper as well as in itunes preferences (i.e., Sound Check, Sound Enhancer) & the Volume Adjustment in the Information pane under Options for particular songs.] I tried all of those means of adjusting volume. They do NOT work.
There is something more insidious at work in itunes which prevent good sound reproduction. I will give an example. I have played Frankie Valle and the Four Season's song "C'Mon Marianne" on the OS X system sound (i.e. clicking the play button to the song file when selected on the desktop or wherever it resides) as well as in Amadeus Pro. The song sounds great. When I play it when it's in the itunes' library the first part of the song is too lound and then when Frankie Valle starts singing his voice is at a significantly reduced volume.
I have edited the foregoing song in Amadeus Pro to a very high volume (i.e., Effects>Amplify), reloaded it into itunes and it still does not inprove the volume of Frankie's voice in the song, even though the rest of the song is somewhat louder. I have played with the Equalizer in itunes to no effect. It just does not work.
Now, I would glading move away from itunes and use another media player. However, I have other Apple devices through which I listen to music. And the only way I know of to listen,e.g., on the iphone is through itunes.
The other related problem with itune, or should I say iCloud, is icloud match. The icloud Match has taken great sounding music and given me back music of an inferior quality, even though it is a Matched AAC format.
I'm am sorry if I am a little peeved about this issue. If anyone has some suggestions or input to a solution, I will be eternally grateful. Thanks a bunch.

fbuerg,
You are welcome. Glad my good fortune was helpful to you.
Time Keeper

Frequency and duty cycle measurement

Hi Friends,
Its been very helping from the day 1 i started psoting my questions to this forum...
Now again its time to seek ur help...
My req is something like i have a sound waveform (say a tone) saved as a .wav file.
Say suppose 1.wav.................
I need to evaluate this wave at a particular interval and should be able to calculate duty cycle, dB level, output frequency and peak to peak voltage similar to a CRO.
I already tried with the below VI but its showing for the entire .wav, so need to do some modifications which attains my req, but i am not sure where to kick off....
So anybody who have worked or developed similar VI in past ,please share your exp's
Thanking you in advance.
Cheers,
Suneel.V
Attachments:
Duty_Cycle.JPG ‏91 KB

Joe/Jeremey,
I am facing some new issue with the VI,
Frequency and Duty cycle are coming but the problem is something like the JPG attached.
Its not frequent and only coming for a particular part of the waveform
Is it waveform (.wav) dependent, if so let me know how to debug this.
Attached the VI (modified), snapshot of error and also wavefile (.wav)
P.S: error coming only when the yellow lines selected to the first quarter of the wave.
Cheers,
Suneel.V
Attachments:
delete_b.zip ‏12 KB
Waveform_Extractor_With_Duty-Cycle_July11.vi ‏151 KB
error_midlevel1.JPG ‏133 KB

Sound Frequency Spectrum Limited When Exported

I've been trying to export the sound from my Final Cut Pro project for my friend to master in a sound program on his computer. He requested my sound in the wav format, so I used QuickTime Conversion to do so. When he looked at the spectrum, he saw that the sound frequencies were cut off above 16,000 hz. We've tried to export in other formats, such as AIFF and AU, but with the same results. Is the sound being limited during conversion or could Final Cut Pro somwhow be doing it before the conversion? Some of the sound tracks I'm exporting have been previously mastered and definitely did have sound above 16,000 hz. Most importantly, how can I export the tracks with their full frequency range intact?

I am having the exact problem, it's a real show stopper.
I have tested hardware, software, media as below.
Tested on
1 Intel 17inch iMac
2 G4 AGP 450 + 1.2Ghz Model
Each have a fresh install of iLife 06 on
Each have been tested with different project files.
Differnet music files
The issue seems to be with apples iLife software to me.
I am on the phone to apple right now, they only surgest I create a new user as it generates new prefs, but the above test has already rulled out preference files!
Also rebuilding and reinstalling, but again the above test has rulled that out as the 3 machines were freshly built.
I have already upgraded my graphics card in my machine at home to sort out preview problems with iMovie, hopefully it's not going to be an expensive audio card aswell.
If any 1 can throw any light on this please do as apple support can't.
Regards
Paul

How to get RPM, frequency and amplitude in colormap

Hi!
I'm doing a program which measures sound and engine speed and then displays it in a colormap.
Im having problems becose i want to display the data like so: x-axis RPM, y-axis Frequency, z-axis (color) [dB].
But it seems imposible to display all three data togheter, always there is one dimension time. Can i change this somehow, is there some way to do this?
Point is, i would like to see at which RPM, the sound is loudest, and at which frequency its loudest. So i cant miss any of those three.
The other problem im facing is, that the color map displays onli 0,1s of data, and i have no option to see into history to see the whole data (if you are in-car doing analysis, the real-time 0,1s data is usless).
I would appreshiate your help.
My vi is in the attachment.
Attachments:
RPM_speedprofil_digital.vi ‏49 KB

Thanks Ben, but I found a different way. Yours is very good example, but its quite difficult to read the values from it, for my prupose of the program.
I did some deeper research on the internet and did it with help of SVT STFT vs RPM.vi which does some transformations of two waveforms (in my case RPM analog wave, and sound wave), and then indicates a nice colormap with RPM on x-axis, Frequency on y-axis, and color of amplitude on z-axis, just how i wanted. This way it is way easier to read the data from the graph.
There is a picture in the attachment of colormap and the code.
Thanks for the response, and a nice day!
Attachments:
RPM-dB-F.JPG ‏56 KB
code.JPG ‏67 KB

Scaling Voltage to different sound frequency and decibels

Similar Messages

Maybe you are looking for