CD With dodgy low frequencies ...

mart34 · 11th July 2009, 06:02 PM

Hello there, I have a problem with one of my CDs, it has a lot of low frequency noise, my speakers look as if they are going mad ... !!! ... and obviously i dont want to fry the voice coils in my speakers

Is there any software online that can help me with this ... ???

Many thanks and regards, Mart

PS Im very sorry if this has been put in the wrong section of this forum

Cal Weldon · 11th July 2009, 06:22 PM

Hi,

Sometimes it can be as easy as a truck or something heavy going by when the master was made and you're seeing rumble. Yes you can get it out by filtering but if it only one cd, that might not be the way. What cd is it? Maybe others who own it also notice that problem.

Nice looking set up BTW.

mart34 · 11th July 2009, 06:30 PM

Thanks Cal, how do I filter it ... ? ... What software ... ?

Its not a one off rumble, i.e. from a low rumbling sound from a plane/truck etc. ...

this is a constant very low frequency noise (possibly in the region of 1 - 5/10 hz)

It is only this particular cd

Cal Weldon · 11th July 2009, 08:05 PM

If it's just the one cd then IMO just live with it or maybe see here:

Amplifier + Rumble Filters

which leads to here:

http://sound.westhost.com/project99.htm

Here's a premade:

http://shop.audiointelligent.com/pro...2?productId=50

KSTR · 11th July 2009, 09:26 PM

Rip CD --> Audacity, use "high pass filter" at 15 Hz or so --> test it, if ok burn CD

- Klaus

mart34 · 12th July 2009, 04:01 AM

Thanks for the feedback gentlemen, will be looking into all these options

Cheers, Mart

11th July 2009, 06:22 PM	#2
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	Hi, Sometimes it can be as easy as a truck or something heavy going by when the master was made and you're seeing rumble. Yes you can get it out by filtering but if it only one cd, that might not be the way. What cd is it? Maybe others who own it also notice that problem. Nice looking set up BTW. __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

11th July 2009, 08:05 PM	#4
Cal Weldon Speakerholic diyAudio Moderator Join Date: Jan 2004 Location: British Columbia	If it's just the one cd then IMO just live with it or maybe see here: Amplifier + Rumble Filters which leads to here: http://sound.westhost.com/project99.htm Here's a premade: http://shop.audiointelligent.com/pro...2?productId=50 __________________ Next stop: Margaritaville Some of Cal's stuff \| Cal Weldon Consulting

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11th July 2009, 06:30 PM	#3
mart34 diyAudio Member Join Date: Jul 2004 Location: England	Thanks Cal, how do I filter it ... ? ... What software ... ? Its not a one off rumble, i.e. from a low rumbling sound from a plane/truck etc. ... this is a constant very low frequency noise (possibly in the region of 1 - 5/10 hz) It is only this particular cd

11th July 2009, 09:26 PM	#5
KSTR diyAudio Member Join Date: Jul 2007 Location: Central Berlin, Germany	Rip CD --> Audacity, use "high pass filter" at 15 Hz or so --> test it, if ok burn CD - Klaus

12th July 2009, 04:01 AM	#6
mart34 diyAudio Member Join Date: Jul 2004 Location: England	Thanks for the feedback gentlemen, will be looking into all these options Cheers, Mart

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