High Pitch/Anti Noise filter while using headphones?

Harakiri23 · Nov 22, 2011, 11:01 PM

Some videos i watch (regardless of player) have a high pitch sound in the background - its only audible when using headphones - not when using my 5.1 cambridge - for headphones i turn off digitial (maybe something todo with this) - is there a way to filter out these high pitch sounds?

Tyrsonswood · Nov 22, 2011, 11:52 PM

Where are you plugging in the headphones? Also a little background about your system might help... (sound card/drivers, operating system, motherboard chipset, etc.)

jaromanda · Nov 23, 2011, 05:33 AM

If it's what I'm thinking of, it's very likely nothing can be done ... it's induced noise being picked up by the headphone cable - you could try a ferrous choke

Harakiri23 · Nov 26, 2011, 11:59 PM

Quote:

Originally Posted by Tyrsonswood

Where are you plugging in the headphones? Also a little background about your system might help... (sound card/drivers, operating system, motherboard chipset, etc.)

They are plugged in in the front, its a audigy 1 (the first audigy, not any rebrands like gamer).

I have this issue only with certain movies, and its usually why its pretty quite.

My os is winxp - i have an asus nvidia chipset board, im using the latest kxdrivers

Tyrsonswood · Nov 27, 2011, 01:19 AM

Does it have the Audigy Platinum 5.25 inch drive bay (Live! drive looking deal) or is is hooked to your case front panel jacks? The reason I ask is sometimes this can be caused by the routing of the headphone wires within the case, although the drive bay setup should reject this/filter it out, they are un-shielded wire so it's still possible..... If you are hooked to the case front panel jack it's more likely to get background noise.

You may want to move the wires around inside the case and see if you can effect the noise by doing so.

stylus02 · Nov 28, 2011, 11:01 AM

a high tone can be filtered out with a lowpass filter. you don't need to know exactly what the frequency is. try out some settings above 10 khz. if nothing changes it is a cable/ ground problem or a pickup from other cards/ bus in your system. (graphic cards are critical)

Harakiri23 · Nov 28, 2011, 10:10 PM

Quote:

Originally Posted by Tyrsonswood

Does it have the Audigy Platinum 5.25 inch drive bay (Live! drive looking deal) or is is hooked to your case front panel jacks? The reason I ask is sometimes this can be caused by the routing of the headphone wires within the case, although the drive bay setup should reject this/filter it out, they are un-shielded wire so it's still possible..... If you are hooked to the case front panel jack it's more likely to get background noise.

You may want to move the wires around inside the case and see if you can effect the noise by doing so.

its connected using diginal din (proprietary spdif) to the DTS and additionally via headjack to the headphones - its a 5.25 inch drive - it was the very first audigy sold

Harakiri23 · Nov 28, 2011, 10:10 PM

Quote:

Originally Posted by stylus02

a high tone can be filtered out with a lowpass filter. you don't need to know exactly what the frequency is. try out some settings above 10 khz. if nothing changes it is a cable/ ground problem or a pickup from other cards/ bus in your system. (graphic cards are critical)

alright thanks - can you elaborate how i do that?

stylus02 · Nov 29, 2011, 10:13 AM

go to the dsp window, load the plugin (rightclick) from the filters folder and connect it between source and output.

Harakiri23 · Nov 30, 2011, 01:44 AM

Quote:

Originally Posted by stylus02

go to the dsp window, load the plugin (rightclick) from the filters folder and connect it between source and output.

Thank you, can you be a bit more specific how i can connect it between source and output? I never used the DSP window.

I found under EQ & Filter the "EQ LowPass" and added it - now what?

Harakiri23 · Dec 1, 2011, 06:51 PM

Quote:

Originally Posted by Annal606

Thanks for this post guys I was going through the same thing

How did you solve it?

Russ · Dec 1, 2011, 07:42 PM

In the DSP, disconnect the 7th/8th pins on epilog (right click on each pin and choose disconnect).

Connect 10 Band EQ output pins to EQ Lowpass input pins (outputs pins are on right side of plugins, input pins on left side (click on output pin and drag to input pin)).

Connect EQ Lowpass output pins to 7th/8th pins of epilog.

Open the tweak window for EQ Lowpass and set Width to 0.71 (use arrow keys for small adjustments) and set frequency as high as it goes. Play your audio and lower the frequency until the high pitch noise is gone.

Harakiri23 · Dec 1, 2011, 08:13 PM

Quote:

Originally Posted by Russ

In the DSP, disconnect the 7th/8th pins on epilog (right click on each pin and choose disconnect).

Connect 10 Band EQ output pins to EQ Lowpass input pins (outputs pins are on right side of plugins, input pins on left side (click on output pin and drag to input pin)).

Connect EQ Lowpass output pins to 7th/8th pins of epilog.

Open the tweak window for EQ Lowpass and set Width to 0.71 (use arrow keys for small adjustments) and set frequency as high as it goes. Play your audio and lower the frequency until the high pitch noise is gone.

Thank you for the good description - i did exactly as you said:

http://i.imgur.com/tw9Bt.jpg

However - there is no noticeable difference.

Is pin 7 and 8 correct? It says headphone left/right - but i never configured a headphone anywhere - i simply switch from digital out to analog out in the kxmixer page to switch between spdif and front. Is it maybe another pin?

Russ · Dec 1, 2011, 08:16 PM

BTW: I thought I should mention that filters in the DSP cannot do anything about noise introduced after the audio leaves the DSP (i.e. noise induced in headphone cabling, etc).

Russ · Dec 1, 2011, 08:17 PM

Pins 7/8 should be the headphone jack on the Audigy Drive.
Do you lose sound in your headphones when those pins are disconnected?

Harakiri23 · Dec 1, 2011, 08:24 PM

Thanks, it is actually Pin 1 and 2 (analog front left+right) for me

I lowered the settings and it worked - however - i had to go as 0.01 width to make it go away and the sound itself is getting very blunt - also when i increase the volume very high i can hear it again

Russ · Dec 1, 2011, 08:52 PM

Quote:

Originally Posted by Harakiri23

Thanks, it is actually Pin 1 and 2 (analog front left+right) for me

Hmm, then I guess you do not have an Audigy Drive, or you are not using it's headphone jack (Audigy Drive headphone jack is pins 7/8 and should not be effected by DOO switch).

Quote:

Originally Posted by Harakiri23

I lowered the settings and it worked - however - i had to go as 0.01 width to make it go away and the sound itself is getting very blunt - also when i increase the volume very high i can hear it again

At what frequency setting?

You could also try a notch filter instead of lowpass.

Quote:

Originally Posted by Russ

BTW: I thought I should mention that filters in the DSP cannot do anything about noise introduced after the audio leaves the DSP (i.e. noise induced in headphone cabling, etc).

Since you can only hear the noise in the headphones, it seems likely that the noise is being introduced after it leaves the DSP.

Tyrsonswood · Dec 1, 2011, 11:09 PM

Quote:

Since you can only hear the noise in the headphones, it seems likely that the noise is being introduced after it leaves the DSP.

That's why I initially suggested moving some wires around in the case to see if it makes any difference. It could even be the phones leadwire....... try moving that away from mouse, external drives or whatever you have on the desk that's active. Computers generate a lot of extraneous noise... some worse than others. Shift some thing physically and check for changes in the noise.

Harakiri23 · Dec 2, 2011, 12:19 AM

Quote:

Originally Posted by Tyrsonswood

T It could even be the phones leadwire....... try moving that away from mouse, external drives or whatever you have on the desk that's active. Computers generate a lot of extraneous noise... some worse than others. Shift some thing physically and check for changes in the noise.

They headphones are wireless, i tried different cables to the receiver same result. Also if that noise is a mechanical problem - why do i only hear it in certain movies as background noise?

There shouldnt be any extra cables lying around, it just goes straight from the back of the audigy card to the receiver - its behind the desktop.

Harakiri23 · Dec 2, 2011, 12:26 AM

Quote:

Originally Posted by Russ

At what frequency setting?

You could also try a notch filter instead of lowpass.

Since you can only hear the noise in the headphones, it seems likely that the noise is being introduced after it leaves the DSP.

The frequency was all the way to the right (max) but changing that didnt change anything.

With the EQ Notch filter it works actually alot better, but you can still hear it in the background but not as loud as without the filter, thanks.

The audigy identifies as SB0090 10k2 - i dont have an Audigy Drive - im using a DTS 3500 cambridge.

Tyrsonswood · Dec 2, 2011, 12:59 AM

I thought you said you had an Audigy drive...... What if you used the back panel jack on the Audigy card instead of the jack on the Cambridge?

Harakiri23 · Dec 2, 2011, 01:39 AM

Quote:

Originally Posted by Tyrsonswood

I thought you said you had an Audigy drive...... What if you used the back panel jack on the Audigy card instead of the jack on the Cambridge?

thats what im doing all the time - sorry for the misunderstanding - i use the jack on the audigy card

Tyrsonswood · Dec 2, 2011, 01:49 AM

Oh, okay..... sorry for the confusion. That's why pins 1 & 2 were the ones that were working for you. I should have caught that.

peate · Dec 2, 2011, 05:12 PM

Have you tried your headphones in the rear out instead? The better codecs might improve the sound and get rid of the noise. It might be worth a try instead of the filter.

Harakiri23 · Dec 6, 2011, 11:15 PM

Quote:

Originally Posted by peate

Have you tried your headphones in the rear out instead? The better codecs might improve the sound and get rid of the noise. It might be worth a try instead of the filter.

yep, first thing i tried - same result

Tyrsonswood · Dec 7, 2011, 12:10 AM

Quote:

Originally Posted by Harakiri23

They headphones are wireless, i tried different cables to the receiver same result. Also if that noise is a mechanical problem - why do i only hear it in certain movies as background noise?

There shouldnt be any extra cables lying around, it just goes straight from the back of the audigy card to the receiver - its behind the desktop.

I'm wondering if this is due to the fact that you are using wireless headphones. If you have an older set of wired headphones try them and see if the same noise exists. Or even a set of analog computer speakers plugged into that jack.

Nov 22, 2011, 11:01 PM	#1
Harakiri23 HardwareHeaven Junior Member Join Date: Oct 2005 Posts: 21 Rep Power: 0	High Pitch/Anti Noise filter while using headphones? Some videos i watch (regardless of player) have a high pitch sound in the background - its only audible when using headphones - not when using my 5.1 cambridge - for headphones i turn off digitial (maybe something todo with this) - is there a way to filter out these high pitch sounds?

Nov 23, 2011, 05:33 AM	#3
jaromanda HardwareHeaven Lover Join Date: Aug 2007 Posts: 138 Rep Power: 33 System Specs	Re: High Pitch/Anti Noise filter while using headphones? If it's what I'm thinking of, it's very likely nothing can be done ... it's induced noise being picked up by the headphone cable - you could try a ferrous choke __________________ Feed your head.

Nov 28, 2011, 11:01 AM	#6
stylus02 HardwareHeaven Addict Join Date: Jan 2008 Location: germany, sb0090 Posts: 259 Rep Power: 0	Re: High Pitch/Anti Noise filter while using headphones? a high tone can be filtered out with a lowpass filter. you don't need to know exactly what the frequency is. try out some settings above 10 khz. if nothing changes it is a cable/ ground problem or a pickup from other cards/ bus in your system. (graphic cards are critical) __________________ http://kxm.dyndns.org

Nov 29, 2011, 10:13 AM	#9
stylus02 HardwareHeaven Addict Join Date: Jan 2008 Location: germany, sb0090 Posts: 259 Rep Power: 0	Re: High Pitch/Anti Noise filter while using headphones? go to the dsp window, load the plugin (rightclick) from the filters folder and connect it between source and output. __________________ http://kxm.dyndns.org

Dec 1, 2011, 07:42 PM	#12
Russ HardwareHeaven Extreme Member Join Date: Jan 2005 Posts: 5,563 Rep Power: 62	Re: High Pitch/Anti Noise filter while using headphones? In the DSP, disconnect the 7th/8th pins on epilog (right click on each pin and choose disconnect). Connect 10 Band EQ output pins to EQ Lowpass input pins (outputs pins are on right side of plugins, input pins on left side (click on output pin and drag to input pin)). Connect EQ Lowpass output pins to 7th/8th pins of epilog. Open the tweak window for EQ Lowpass and set Width to 0.71 (use arrow keys for small adjustments) and set frequency as high as it goes. Play your audio and lower the frequency until the high pitch noise is gone.

Dec 1, 2011, 08:16 PM	#14
Russ HardwareHeaven Extreme Member Join Date: Jan 2005 Posts: 5,563 Rep Power: 62	Re: High Pitch/Anti Noise filter while using headphones? BTW: I thought I should mention that filters in the DSP cannot do anything about noise introduced after the audio leaves the DSP (i.e. noise induced in headphone cabling, etc).

Dec 1, 2011, 08:17 PM	#15
Russ HardwareHeaven Extreme Member Join Date: Jan 2005 Posts: 5,563 Rep Power: 62	Re: High Pitch/Anti Noise filter while using headphones? Pins 7/8 should be the headphone jack on the Audigy Drive. Do you lose sound in your headphones when those pins are disconnected? Last edited by Russ; Dec 1, 2011 at 08:23 PM.

Dec 1, 2011, 08:24 PM	Thread Starter #16
Harakiri23 HardwareHeaven Junior Member Join Date: Oct 2005 Posts: 21 Rep Power: 0	Re: High Pitch/Anti Noise filter while using headphones? Thanks, it is actually Pin 1 and 2 (analog front left+right) for me I lowered the settings and it worked - however - i had to go as 0.01 width to make it go away and the sound itself is getting very blunt - also when i increase the volume very high i can hear it again

Dec 2, 2011, 05:12 PM	#24
peate HardwareHeaven Senior Member Join Date: Oct 2003 Posts: 409 Rep Power: 57	Re: High Pitch/Anti Noise filter while using headphones? Have you tried your headphones in the rear out instead? The better codecs might improve the sound and get rid of the noise. It might be worth a try instead of the filter.