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Signal more than 22000 Hz ?
Posted: Thu Nov 29, 2007 11:03 pm
by JLS
Hi all
Is possible generate signal more than 22000 Hz on scope board ?
my idea is about 0-48000 Hz ( if samplerate set 96 kHz)
Is possible or not ?
Very thanks info about this
Kamil
Posted: Fri Nov 30, 2007 1:37 am
by garyb
sure, what system will reproduce it?
Posted: Fri Nov 30, 2007 1:43 am
by JLS
PA system not problem
and piesoelectric resonator
not for audio only for experiments with resonant Kyma-wave.
Kamil
Posted: Fri Nov 30, 2007 1:50 am
by Mr Arkadin
What you trying to do - annoy dogs and bats?
Posted: Fri Nov 30, 2007 2:33 am
by JLS
only for cymatic experiment
IS POSSIBLE GENERATE THIS SIGNAL WITH SCOPE OR MODULAR ?
( in sound forge working fine but not ergonomic signal and not modulate this )
THANKS Kamil
Posted: Fri Nov 30, 2007 3:20 am
by astroman
imho the question is rather:
will you get it through the output conversion stage, as it is designed for audio purpose (filters etc)
cheers, Tom
Posted: Fri Nov 30, 2007 3:31 am
by garyb
he didn't believe me....
Posted: Fri Nov 30, 2007 3:34 am
by dawman
The Waldorf Q yellow rack I heard did it. My neighbor complained I was killing her rodent ( chihuahua ).
Once I realised the little rat was suffering, naturally I had to do a final resonating self Oscillation to complete the test.
Is it a sample wave from the Capybara ?
Posted: Fri Nov 30, 2007 6:45 am
by JLS
No no
Cymatic is study of wave phenomena.
not sound system
im use pulsar only like signal generator
piesoelectric phenomen on water, dust, oil and other material (Pythagoras,Chladni, Jenny ....)
In SoundForge if set sample rate 96kHz produce signal 0-48000Hz = working, but not easy set frequency and combination frequency - ideal for modular but only 22000 Hz
Kamil
Posted: Fri Nov 30, 2007 6:53 am
by the19thbear
well im not at my music computer right now, but this could easily be tested! set up a osc in modular II/III and record to wavelab etc, and see if there is any wave.. Someone do the man a favor
BUT!! I dont think you will get the sound out of the soundcards outputs, because they are filtered which means that it wont allow very low/high frequenzies to go trhough( I THINK! i have not tested it) Maybe if you go digital out from scope (spdif?), and into some high/low repdroducing special equipment with spdif inputs..
Posted: Fri Nov 30, 2007 11:42 am
by garyb
that would likely work.
worst case, an sdk developer may need to implement an osc that generated such a signal. a digital out would be required for sure....
Posted: Fri Nov 30, 2007 12:16 pm
by ChampionSound
Well, my monitors have SPDIF inputs and the are directly connected to my SPDIF output of my scope card.
I have Tannoy Precision 8D monitors, and with their so called 'super tweeters' Tannoy claims to produce frequencies up to 51(!) kHz. So I assume the anti aliasing filter of the DA convertor of these monitors is not limited to 22 kHz.
Of course I could never hear such frequencies (let alone 22 kHz), but Tannoy says it's rather for accurate phase control in the high freq range which wil give a subjective improvement. Well, I'm not sure about this, because if I play a CD, then there aren't any frequencies present at 23kHz, right? So how can you reproduce something which wasn't there in the first place? Maybe these benefits only apply when working in 96K? (These monitors do sound good anyway, though)
Anyway, I think it' should be possible to reproduce up to 48 kHz if you're working at 96K samplerate and have the right convertors and monitors/speakers.
