Somebody do me a favor?

[Howard]

I need a sound file with a pure 20kHz tone.

 

[legoman666]

A: you probably can't hear it
B: your speakers probably can't produce it
C: Audacity can generate one for you

 

[OOBradm]

D: ...
E: Profit

 

[Sumguy]

I got curious and tried it.

I'll get back to you when my ears stop hurting.

 

[Howard]

Originally posted by: legoman666
A: you probably can't hear it
B: your speakers probably can't produce it
C: Audacity can generate one for you

A: Won't know 'til you try, right? I'm still young.
B: They will.
C: I don't have Audacity.

 

[Sumguy]

Originally posted by: Howard

Originally posted by: legoman666
A: you probably can't hear it
B: your speakers probably can't produce it
C: Audacity can generate one for you

A: Won't know 'til you try, right? I'm still young.
B: They will.
C: I don't have Audacity.

http://audacity.sourceforge.net/

 

[legoman666]

http://www.rme-audio.com/download/20khz_16.zip

I either can't hear it or my speakers can't produce it. give it a shot

 

[DanFungus]

Originally posted by: Howard

Originally posted by: legoman666
A: you probably can't hear it
B: your speakers probably can't produce it
C: Audacity can generate one for you

A: Won't know 'til you try, right? I'm still young.
B: They will.
C: I don't have Audacity.

I'll help

 

[legoman666]

I made a .flac of 1:06 of 20khz. I can email it to you if you want. ~2mb.

 

[Rubycon]

1bit WSD file would give superior resolution but I'm willing to bet you would not be able to play that back and have to convert to PCM.

 

[frostedflakes]

Neat, seems like my speakers can actually produce this. Anybody know a program that can generate higher than 20kHz (seems like Audacity tops out there)?

EDIT: Don't seem to do so well <50Hz, though (understandable, they're a Klipsch 2.0 set, so no subwoofer).

 

[Howard]

Originally posted by: Rubycon
1bit WSD file would give superior resolution but I'm willing to bet you would not be able to play that back and have to convert to PCM.

Well, people succumbed to the tyranny of Nyquist, so I should be ok with regular PCM.

EDIT: Interesting - the spectrum visualizer of foobar2000 goes past 20kHz. Can't really tell how much further though. And I can hear it.

 

[Rubycon]

First of all you cannot just tell if you're hearing the fundamental OR you're hearing the border of the lower noise floor - the threshold of hearing 20kHz is so low the gain of the system must be increased where any other noises including distortion become audible. This masks the results severely and the only way to tell is with specialized equipment.

Second at these elevated levels you put far more power into tiny elements of your speakers - more than they would ever see even blasting music at painful volumes. This creates thermal stress that can damage or destroy the HF (commonly called the tweeter) drivers/elements/voicecoils/diaphragms,etc. This is common with an inexperienced user and by the time it's too late (release of the magic smoke which is smelled shortly) the damage is already done. So be careful. Also if you have pets (cats/dogs/rodents) beware they can hear these frequencies much easier than you can. So what sounds barely audible to YOU sounds like an air raid siren to them!

 

[legoman666]

Originally posted by: legoman666
http://www.rme-audio.com/download/20khz_16.zip

I either can't hear it or my speakers can't produce it. give it a shot

I take that back. I tried it with my headphones and I can barely hear it.

 

[IHateMyJob2004]

Originally posted by: legoman666
http://www.rme-audio.com/download/20khz_16.zip

I either can't hear it or my speakers can't produce it. give it a shot

So, the fact that you are going deaf is your speakers fault. FYI, you loose your ability to hear higher frequencies first.

 

[pstylesss]

Originally posted by: legoman666

Originally posted by: legoman666
http://www.rme-audio.com/download/20khz_16.zip

I either can't hear it or my speakers can't produce it. give it a shot

I take that back. I tried it with my headphones and I can barely hear it.

I can hear it no problem...

 

[Howard]

Originally posted by: Rubycon
First of all you cannot just tell if you're hearing the fundamental OR you're hearing the border of the lower noise floor - the threshold of hearing 20kHz is so low the gain of the system must be increased where any other noises including distortion become audible. This masks the results severely and the only way to tell is with specialized equipment.

Second at these elevated levels you put far more power into tiny elements of your speakers - more than they would ever see even blasting music at painful volumes. This creates thermal stress that can damage or destroy the HF (commonly called the tweeter) drivers/elements/voicecoils/diaphragms,etc. This is common with an inexperienced user and by the time it's too late (release of the magic smoke which is smelled shortly) the damage is already done. So be careful. Also if you have pets (cats/dogs/rodents) beware they can hear these frequencies much easier than you can. So what sounds barely audible to YOU sounds like an air raid siren to them!

I can hear the 20kHz tone at my regular listening volume. It's quite sharp, so it's not just noise.

Don't have pets, anyway.

 

[Goosemaster]

*waits for the "dammit my suspension blew out on my sub" thread*

 

[Howard]

Originally posted by: Goosemaster
*waits for the "dammit my suspension blew out on my sub" thread*

You have more problems than a ripped spider/surround if a 20kHz tone can damage the suspension on a sub.

 

[darkswordsman17]

Originally posted by: Goosemaster
*waits for the "dammit my suspension blew out on my sub" thread*

Don't worry, it wasn't until just a few posts before yours that I realized he was saying 20kHz and not 20Hz.

 

[Rubycon]

Originally posted by: Howard

I can hear the 20kHz tone at my regular listening volume. It's quite sharp, so it's not just noise.

Don't have pets, anyway.

What kind of audio interface? Many particularly onboard audio will not faithfully reproduce a 20kHz sinus tone. With the proper equipment you'd be surprised what cheap audio on pc's is throwing at you. Luckily music is not continuous tone and masking works quite well. This is why we have 128kbps mp3 being called cd quality. <shudder>

 

[Goosemaster]

Originally posted by: Howard

Originally posted by: Goosemaster
*waits for the "dammit my suspension blew out on my sub" thread*

You have more problems than a ripped spider/surround if a 20kHz tone can damage the suspension on a sub.

Hell, I can blow out a sub with a Japanese-dubbed version of a Margret Thatcher speech if you give me enough juice...

 

[Rubycon]

Originally posted by: Goosemaster

Originally posted by: Howard

Originally posted by: Goosemaster
*waits for the "dammit my suspension blew out on my sub" thread*

You have more problems than a ripped spider/surround if a 20kHz tone can damage the suspension on a sub.

Hell, I can blow out a sub with a Japanese-dubbed version of a Margret Thatcher speech if you give me enough juice...

I've gotten 2260's up in the high teen kHz range on PL6's with the -10 light on constant! :Q The dustcap makes for a rudimentary whizzer cone but if a kick drum gets fed in at the same time that practically causes a paradox. :laugh:

 

[legoman666]

Originally posted by: Rubycon

Originally posted by: Goosemaster

Originally posted by: Howard

Originally posted by: Goosemaster
*waits for the "dammit my suspension blew out on my sub" thread*

You have more problems than a ripped spider/surround if a 20kHz tone can damage the suspension on a sub.

Hell, I can blow out a sub with a Japanese-dubbed version of a Margret Thatcher speech if you give me enough juice...

I've gotten 2260's up in the high teen kHz range on PL6's with the -10 light on constant! :Q The dustcap makes for a rudimentary whizzer cone but if a kick drum gets fed in at the same time that practically causes a paradox. :laugh:

wut

 

[Howard]

Originally posted by: Goosemaster

Originally posted by: Howard

Originally posted by: Goosemaster
*waits for the "dammit my suspension blew out on my sub" thread*

You have more problems than a ripped spider/surround if a 20kHz tone can damage the suspension on a sub.

Hell, I can blow out a sub with a Japanese-dubbed version of a Margret Thatcher speech if you give me enough juice...

Uncrossed subs suxor

Originally posted by: Rubycon

Originally posted by: Howard

I can hear the 20kHz tone at my regular listening volume. It's quite sharp, so it's not just noise.

Don't have pets, anyway.

What kind of audio interface? Many particularly onboard audio will not faithfully reproduce a 20kHz sinus tone. With the proper equipment you'd be surprised what cheap audio on pc's is throwing at you. Luckily music is not continuous tone and masking works quite well. This is why we have 128kbps mp3 being called cd quality. <shudder>

It is onboard audio. I've got it coming through Hi-Vi B3S wide-rangers which can barely do 20kHz. I'm surprised I can hear it at all - but I certainly am.