Author Topic: Frequency range of PC soundcard (nVIDIA MCP61)  (Read 3175 times)

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Offline jacksroadhouse

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Frequency range of PC soundcard (nVIDIA MCP61)
« on: April 04, 2012, 02:26:51 pm »
Hi guys,

does anybody know the frequency range of an nVIDIA MCP61 soundcard? I think it's part the nVIDIA GeForce 6600 and it's running "RealTek High Definition Audio" drivers.

I searched high and low for the technical specs, but I can't seem to find anything relevant, except possibly in Chinese, and...

err...

damn!


I'm currently fooling around with a software frequency generator and I'd really like to know if the very low/high frequencies I'm sending out even make it out of the soundcard.

Thanks!

Jack

Offline Wishbone

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #1 on: April 04, 2012, 02:56:49 pm »
Not sure, mate.......... but I did read an interesting article the other day on making an ultrasonic bath using a PC sound card as the generator.

May not be relevant....... but it was very good thinking  ;D

Offline jacksroadhouse

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #2 on: April 04, 2012, 03:01:15 pm »
Hmmmmm
:)

I was actually wondering if the question is at all relevant or if the limits are absurdly high/low (for my purpose - more or less audible sound).

Offline Drubbing

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #3 on: April 04, 2012, 03:24:58 pm »
As with headphones and speakers, the tech specs aren't usually helpful. They often cite what is possible (in their lab) but when the ranges often fall outside that of human hearing, so they're pretty much only academic - even if your card can send them out, you'd only be able to read them, not hear them.

Offline TB-AV

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #4 on: April 04, 2012, 03:34:34 pm »
How very high and low?

ETA: Most soundcards will easily pass the typical 20-20K range. But......

Take the output from the card in question. Run it to an input known to be able to pass full spectrum.

Place a spectrum analyzer across that input.

http://www.voxengo.com/product/span/
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Offline jacksroadhouse

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #5 on: April 04, 2012, 03:41:09 pm »
Nothing specific. I'm trying things out to figure out what I can do with this, from hearing test to equipment check (like testing the actual frequency range of equipment I have). You know me... latest bee in my bonnet ;)

But if it's beyond 20 Hz and 25 kHz respectively, I'd be happy (I think).

Offline TB-AV

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #6 on: April 04, 2012, 03:44:05 pm »
If you can hear 25K you should be real happy. If you know what freqs. you are sending an can hear them, then they are there.

If you can't hear them, which is likely at those extremes, they may still be there. Can you feel the speaker cone move?

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Offline TB-AV

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #7 on: April 04, 2012, 03:54:09 pm »
here or hear. This will get you 30 to 16K. You should be able to hear all that.

http://www.phys.unsw.edu.au/jw/hearing.html

Also just download a free synth that has sine wave and digital readout for freqs.

The link will get you 30hz. Then set teh synth for 25 and 20 and see if you can hear it. Then go to 18K 20K... I doubt you'll get past that.

But the soundcard is very likely to be able to pass beyond your hearing. I would be surprised if it couldn't.
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Offline TB-AV

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #8 on: April 04, 2012, 03:58:16 pm »
Hey Wishbone. Got a link? I could use a small ultrasonic cleaner.
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Offline Majik

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #9 on: April 04, 2012, 04:07:35 pm »
The following may be of use when research sound card capabilities:
http://audio.rightmark.org/test_results.shtml

Cheers,

Keith
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All sorts of other stuff.

Offline misterg

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #10 on: April 04, 2012, 04:22:47 pm »
And if you want to measure things with your sound card such as:

    Oscilloscope (dual channel, xy, time division, trigger);

    Spectrum Analyzer with amplitude and phase display (linear, log, lines, bar, octaves band analysis 1/3, 1/6, 1/9, 1/12, 1/24);

    Wave-form generator with "custom functions", triangular, square, sinus, white noise and pulse generation (NO ALIASING);

    Frequency meter (in time and frequency domain) and counter; in time domain by means of a real time zero crossing algorithm;

    Volt meter with DC, true RMS, peak to peak and mean display;

    Filtering (low pass, hi pass, band pass, band reject, notch, "diode", DC removal);

    Extended THD measurements, with automatic sweep and compensation.

    ZRLC-meter with Vector scope, automatic sweep in time and frequency for automatic measurement.

For FREE download a copy of Visual Analyser 2011

I use it all the time, and it's excellent.

Andy

Offline TB-AV

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #11 on: April 04, 2012, 04:34:36 pm »
how do you set up probes for that thing?
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Offline jacksroadhouse

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #12 on: April 04, 2012, 04:42:38 pm »
@Majik: thanks for the link!! Sadly, Google tells me it's not in there.

@Misterg: Cooooool!!! Thanks!! I'll try that one. Usually this kind of software is "unusable" for me (I'm legally blind), but every once in a while I come across one I can use. Currently I'm using SweepGen, which is real easy. But it's missing pink noise, which is needed for one or two of my ideas.

@TB: this isn't really about my hearing, simply about the specs ;) I have dozens of funny little ideas and I just need to know which of them would make sense with my crappy little soundcard. E.g. my mixer has a theoretical frequency response of <10 Hz to 150 kHz, which pretty much answers any question I could possibly have. I just don't trust this (relatively cheap) consumer stuff. Hence my question ;)

It's hard to believe something so simple can be so difficult. That's what I get for taking Latin instead of Mandarin...  (not that my school would have heard of Mandarin back then, but still)

Offline jacksroadhouse

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #13 on: April 04, 2012, 05:00:33 pm »
Just checked my external soundcard (Tracker Pre) for comparison. It's got the usual 20 Hz - 20 kHz (very theoretically, I suppose, knowing that thing and it's inherent technical optimism).

Maybe we should ask that guy with the ultrasonic bath :)

Offline Wishbone

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Re: Frequency range of PC soundcard (nVIDIA MCP61)
« Reply #14 on: April 04, 2012, 05:29:12 pm »
TB-

Blimey...... Can't remember which one I was reading now....... But there are plenty to choose from.

 

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