Filter frequencies below 10 Hz?

[i_kicked_a_girl]

first off, i just wanted to say hello to everybody. i got my tax return back this week and purchased a brand new 20 gig ipod friday. i've been ripping cd's like crazy this weekend. that and browsing the forums here. i must say, this is a nice looking board. it's got a good color scheme, and it's simple and clean - the way a board should be. i liked registering and going straight to posting instead of receiving an email and having to click on a link.

so i have a question. i've done some searching; it's probably been adressed before, but i guess i didn't see it. i've been experimenting with the different importing options and was wondering in what cases should i NOT filter frequencies below 10 Hz? electronica and hip-hop has lots of deep bass, so i'm going to want to hear that, but i understand it's inaudible frequencies? and even though i'm using the supplied ear buds (which, actually, i was not disappointed with the quality. i expected worse from ear buds), i might want to get some after market 'phones - which may pick up those low frequencies better. i'm not going to be listening to my ipod through a stereo system or my car. after all, i mainly bought one so i can have music to listen to while bike riding, and not having to carry a bulky cd player.

so, for all those albums with deep bass, should i NOT filter frequencies below 10 Hz, or is that just useless and a waste of memory?

p.s. - there's so many forums on this board, i'm not sure if this is in the right one!

[Xmags]

• First off, electronica and Hiphop does NOT has a lot of deep bass. It has a lot of "middle/deep-bass" (50-100hz) which may "sound" deep, but really isn't - In fact everything under 25-30Hz is normally filtered on most CDs and that includes hiphop, electronica etc.

• Secondly, the human ear cannot hear any frequencies below approx. 16-20Hz (depending on the person)

• Thirdly, even though we cannot hear it, we may feel it but it still doesn't matter as there are no speakers that can produce any sound at volume below 10hz. And that includes large PA systems, Cinemas with THX (or better), Planetariums etc. (I've heard about something called an "earthquake box" which should be capable of producing very low frequencies and imitate an earthquake on short distances, but I'm not sure if it really works, in any case it's not a speaker per se)

The only thing that can produce sound below 16-17Hz is sound-generators (electronic), recordings of thunder, earthquakes, nuclear explosions, rocket lauches etc. using specially designed and calibrated microphones, and some huge pipe organs (that can go as low as 8Hz sine at 160dB - causes you to vomit if you stand to close!). But it's a moot point on even the highest of the high end hifi-systems, so just leave the filter below 10Hz option on for music.

EDIT: I mentioned speakers, but this of course also applies to headphones. And even if you can get headphones that can somehow manage to send (below) 10Hz sound into your ear, I guarentee you that you would not like that. It would not feel cool at all (because headphones can't make you "feel" the sound with your body), and would just cause you nautia and headache.

[woyzeck9]

Very good information. Audio frequencies are often misunderstood and this is good for the whole community.

[Xmags]

Thanks woyzeck9, I'm glad my info is appreciated

[i_kicked_a_girl]

yes, thanks a lot.

[Gersson]

10 - 39,500 Hz (-10 dB). Sounds great to me. I bought mine cos I listen to SACD and DVD-Audio, though. You WILL notice tighter bass with lower frequencies. BTW, there ARE PA systems which will play some incredible frequencies. I saw one that said 2-100000 Hz. from an audiophile grade make.

[Xmags]

The are PA systems that will play increadible frequencies indeed, but not below 10Hz and most certainly not 2Hz. I think what you have seen must have been a typo, as it probably should have said 20Hz. 2Hz is impossible to produce at volume with speaker units, but please provide a link to the producers of such speakers. (or, even more likely, it was the specs of the power amplifier, not the speakers)

EDIT: addenum, and the tighter bass you are hearing with your senheiser headphones, is not near the 10Hz limit as you simply cannot hear anything below 16-20Hz, and no headphone can provide the physical experience ("feeling"), like speakers or the "real" world. However, the fact that the senheiser phones are capable of producing such low sounds may indeed improve their playback of higher bass sounds, which again results in a better listening experience.

[blowmyears]

http://www.onlinecarstereo.com/

http://www.onlinecarstereo.com/CarAu...roductID=16720

http://www.onlinecarstereo.com/CarAu...roductID=18697

need i say more, i beleave if u look hard enough u might find something called the "jackhammer" meh HAVE FUN GUYS!

[blowmyears]

"I saw one that said 2-100000 Hz. from an audiophile grade make." sorry i think u just missunderstood "Hz" from "Khz" ~ (2-100000 Khz") i can beleave that lol its ok "pats" :P

[kornchild2002]

I am not sure what you are trying to say but I think the people involved with this post all resolved their problems back over 4 years ago when this thread was active.

[shabbs]

Originally Posted by kornchild2002

I am not sure what you are trying to say but I think the people involved with this post all resolved their problems back over 4 years ago when this thread was active.

Heh. Korn.. nice to see you still active on here... been a while my friend.