[Gurra1980]

Hello.

Anyone know if there is samples of high and low frequencies that can be downloaded, to use for testing headphones?

 

[NelsonVandal]

I use NCH Tone Generator. You can use it direct from your computer, or you can save tones as wav-files with specified duration and frequenzy. Sine, square, triangle, pink- or white noise etc.

 

[jlo]

you can also use this free software :
http://www.ohl.to/about-audio/audio-softwares/eareq/
you can play with frequencies (sine or noise), compare two headphones, save curves...

 

[Redo]

RoomEQ Wizard!

 

[axiom]

For a tone/noise generator:
http://www.nch.com.au/tonegen/index.html
free can't be beat

.
This even does sweeps and different types of waves. Sine wave, square wave, triangular waveform, saw tooth waveform, impulse, white noise and pink noise.
This also does log/linear sweeps and has an option for mono/stereo.

 

[Duggeh]

Yeah NCH is a pretty good bit of kit.

 

[Gurra1980]

Thanks, i tryed nch, one problem I have noticed is that when I get over 17000hz a loud peep is heard that overshadows the real 17000hz peep.

What can it be?
Maybe it is my soundcard, a realtek AV97 Audio.

 

[Redo]

Quote:

Originally Posted by Gurra1980 /img/forum/go_quote.gif Thanks, i tryed nch, one problem I have noticed is that when I get over 17000hz a loud peep is heard that overshadows the real 17000hz peep. What can it be? Maybe it is my soundcard, a realtek AV97 Audio.

Yes, it could possibly be a faulty resample.

 

[Balisarda]

For a test-tone sweep, I use this site. for discrete test tones, I use this site.

 

[Duggeh]

Quote:

Originally Posted by Gurra1980 /img/forum/go_quote.gif Thanks, i tryed nch, one problem I have noticed is that when I get over 17000hz a loud peep is heard that overshadows the real 17000hz peep. What can it be? Maybe it is my soundcard, a realtek AV97 Audio.

At that high a frequency your second peep is probably some kind of second order harmonic.

 

[Gurra1980]

Quote:

Originally Posted by Duggeh /img/forum/go_quote.gif At that high a frequency your second peep is probably some kind of second order harmonic.

some kind of what?

 

[wovenhand]

Quote:

Originally Posted by Duggeh /img/forum/go_quote.gif At that high a frequency your second peep is probably some kind of second order harmonic.

It can't be a second order harmonic of 17kHz since that would be 34kHz and that's way to high up to hear.

 

[Christopher]

Quote:

Originally Posted by wovenhand /img/forum/go_quote.gif It can't be a second order harmonic of 17kHz since that would be 34kHz and that's way to high up to hear.

sounds like harmonic distortion then as opposed to just harmonics... either that or the sound card's DAC can't handle those high freqs (I've experienced similar probs in the past with sines approaching the Nyquist freqs).

 

[65535]

What system can faithfully actually reproduce 50khz? and using the NCH I can't hear below 45 htz.

 

[Ligeia]

Quote:

Originally Posted by Christopher /img/forum/go_quote.gif sounds like harmonic distortion then as opposed to just harmonics... either that or the sound card's DAC can't handle those high freqs (I've experienced similar probs in the past with sines approaching the Nyquist freqs).

The term harmonic distortion implies that harmonics of the fundamental frequency are apparent.

I like to use NCH.