Software to apply roll off to existing music files

[stretchneck]

Quite interested in this Harbeth forum post, which attempts to demonstrate the effect of not reproducing low frequencies via a series of edited music files.

Can anyone suggest freeware software (Mac or Win) which can be used to apply filters to my own music - I would be interested to find out if I can manage with smaller speakers (40Hz vs my current in room flat response to 30Hz). This would seem like a good experiment.

 

[rpi]

You can try Audacity:
Download | Audacity (R)

It can apply filter effects to your signal:

An externally hosted image should be here but it was not working when we last tested it.

 

[stretchneck]

Brilliant - cheers!

 

[Mooly]

Another vote for Audacity

Installing and using Audacity. A get you started guide.

 

[stretchneck]

What great and easy to use software. I just wrote a whole load and then the timeout feature of this forum lost it just as I posted. Grr...

Anyhow, the files a I produced are here - I will say that for the music I listen to a flat response to at least 40Hz is necessary. The difference is easily discernible between the original file and the ones with the 80Hz high pass filter applied.

My speakers are flat in room down to 30Hz, but I can't comment on the effect of losing information in the <30Hz area as subwoofers have never worked correctly in my room.

 

[rpi]

Using the same Audacity you can generate tone signal:
Tracks -> Add New -> Stereo Tracks
Generate -> Tone
This way you can define what you can really hear. Maybe you don't need anything below 30

 

[stretchneck]

Cool - great test.

Lowest I can hear is 16Hz (quiet room, with decent volume on AKG 3003i IEMs). 20Hz onwards is easy to hear.

I can't hear anything over 11kHz though, but that should not be a surprise as I'm 41!

 

[rpi]

That's pretty common but not so many people tried to make this kind of test. Otherwise they wouldn't create systems which can entertain only bats in attics