Dubstepforum.com

It's been awhile since I've been on here.

But I have a question about an argument I'm in.

Lets say you have a sub-bass that has a frequency of 10Hz. If you raise the sound pressure(db), is it still 10Hz?

err... yeah. though I'm not sure we have commercially available subs that are capable of reproducing a 10Hz tone... much less ears that can hear it

Anyway pitch (Hz) is a FREQUENCY. as in how many times per second the cone pushes in and out... a rate, if you will. Amplitude is how far in and out the cone shakes. It has nothing to do with how fast it's going.

I could be wrong but I think as things get louder the brain sometimes interprets them as being higher pitch, a psychoaccoustic phenomena. It's a negligible change though, and I think higher frequencies are subject to it more so than lower. But you won't really 'hear' 10hz so much as feel it anyways.

But if you had a 15Hz sub but boosted the Db, couldn't you hear it with it still being 15Hz?

Not that any of these numbers matter, I'm just using as an example.

Skrew wrote:But if you had a 15Hz sub but boosted the Db, couldn't you hear it with it still being 15Hz?

well if you boosted the db you would probably not be able to hear the 15hz, more the sound created from the driver flapping about too slow, or if you add db so that it distorts then you will here the harmonics added from the distortion, but it will still be a 15hz tone and that is the fundamental note.

Triphosphate wrote:I could be wrong but I think as things get louder the brain sometimes interprets them as being higher pitch, a psychoaccoustic phenomena. It's a negligible change though, and I think higher frequencies are subject to it more so than lower. But you won't really 'hear' 10hz so much as feel it anyways.

i think its the inverse of this.... as in, when you raise the pitch to higher frequencies, your brain interprets it as louder even though its the same amplitude.


Anyway frequency is how fast the cone moves, and amplitude is how far it moves.

-[2]DAY_- wrote:

Triphosphate wrote:I could be wrong but I think as things get louder the brain sometimes interprets them as being higher pitch, a psychoaccoustic phenomena. It's a negligible change though, and I think higher frequencies are subject to it more so than lower. But you won't really 'hear' 10hz so much as feel it anyways.

i think its the inverse of this.... as in, when you raise the pitch to higher frequencies, your brain interprets it as louder even though its the same amplitude.


Anyway frequency is how fast the cone moves, and amplitude is how far it moves.

Ah you're absolutely right. But above post is also right that distortion adds harmonics. But yes... A tone at 1000hz for example is still 1000hz wether it's -10db or 0 db.

skimpi wrote:

Skrew wrote:But if you had a 15Hz sub but boosted the Db, couldn't you hear it with it still being 15Hz?

well if you boosted the db you would probably not be able to hear the 15hz, more the sound created from the driver flapping about too slow, or if you add db so that it distorts then you will here the harmonics added from the distortion, but it will still be a 15hz tone and that is the fundamental note.

This is what I was looking for. Thanks.

Skrew wrote:

skimpi wrote:

Skrew wrote:But if you had a 15Hz sub but boosted the Db, couldn't you hear it with it still being 15Hz?

well if you boosted the db you would probably not be able to hear the 15hz, more the sound created from the driver flapping about too slow, or if you add db so that it distorts then you will here the harmonics added from the distortion, but it will still be a 15hz tone and that is the fundamental note.

This is what I was looking for. Thanks.

For the record VERY few commercially available speakers produce anything below 20hz, as lower then that, your essentially operating a fan.

Teknicyde wrote:

Skrew wrote:

skimpi wrote:

Skrew wrote:But if you had a 15Hz sub but boosted the Db, couldn't you hear it with it still being 15Hz?

well if you boosted the db you would probably not be able to hear the 15hz, more the sound created from the driver flapping about too slow, or if you add db so that it distorts then you will here the harmonics added from the distortion, but it will still be a 15hz tone and that is the fundamental note.

This is what I was looking for. Thanks.

For the record VERY few commercially available speakers produce anything below 20hz, as lower then that, your essentially operating a fan.

Not that I'm making anything under 20hz. We were just having an argument over headphones with a range under 20Hz. He said their pointless but I said you need them.

I say pointless depending on how it's mastered you end up rolling things off below 40hz anyways. I guess you can use it as an ear fan though

pointless. especially in cans but also for systems. not to mention near impossible for headphones

Triphosphate wrote:I say pointless depending on how it's mastered you end up rolling things off below 40hz anyways. I guess you can use it as an ear fan though

40hz would be far to high and you should fire that m.e. immediately, thats high enough that it would remove legitimate sub notes.

M.E. do a linear-phase rolloff on 20 and below, if they start to touch anything hire then that blasphemy, 30hz is the chest shaker anyway.

20 hz is perfectly audible on my Equation rp-21 headphones and they're only $100

Jacob15728 wrote:808's are not perfectly audible on my Equation rp-21 headphones and they're only $10

sorry man wanna borrow some of my cans?

oprs wrote:

Jacob15728 wrote:808's are not perfectly audible on my Equation rp-21 headphones and they're only $10

sorry man wanna borrow some of my cans?

I've said it before and I'll say it again. FUCK OFF.

Jacob15728 wrote:

oprs wrote:

Jacob15728 wrote:808's are not perfectly audible on my Equation rp-21 headphones and they're only $10

sorry man wanna borrow some of my cans?

I've said it before and I'll say it again. FUCK OFF.

we just need to hug

Teknicyde wrote: M.E. do a linear-phase rolloff on 20 and below, if they start to touch anything hire then that blasphemy, 30hz is the chest shaker anyway.

For the record, linear phase will fuck stuff up in the low end, best using minimum phase here. Linear phase is best on high end.

Also sometimes you may think you're hearing a low frequency but it's actually a harmonic produced by distortion in the speaker. That said, I have cans that go down to 4hz. They can actually deliver some serious pressure, and whether or not my ears can actually pickup tones that low I still enjoy them.