HI,
I can't quite remember the biological explination for this (I've an
accademic background in human genetics and biology rather than audio
stuff which is just a passtime)... But there is a strange thing you
have to remember in terms of the human ear's perception of sound,
which means just relying on meters and readings digitally given inside
something like Sonar won't always help:
Human hearing basically hears higher frequencies as being louder, even
when at the same absolute 'volume' as lower ffrequencies. I now have a
vague recollection that the biological explination for this is that
hearing is specifically 'tuned in' to frequencies roughly about the
frequencies of human speech. Anyhow, the upshot of which is that I
think most people notice more easily when there is a lack of high
frequencies/trebble moreso than they do if its the very low 'sub'
frequencies that arn't there... I guess this also helps explain why it
sounds so dredful when you hear a car pass down the street blasting
music out with its windows closed.... Only the low frequencies escape
from the car as they've larger wavelengths, whilst the higher
frequencies with their shorter wavelengths get blocked and muffled
before they can escape...
Not quite sure what I'm trying to add here to the discussion, but I
guess to say I think this is probably the reason why cutting out very
high frequencies in a simular way to what is often useful/good for low
frequencies, produces a result that just 'sounds wrong'... This seems
to be the case even when they're high frequencies theoretically above
the limit of human hearing; again I guess harmonics comes into play
with that as well to a certain extent...
Personallly though I can find this quite tricky at times as my hearing
is lacking certain frequencies (which differ between my ears), but to
some extent its possible for me to get round this not so much by just
listening to the tune I'm working on, but by compairing it to other
commercial songs, and that can help me judge when I've done some
boosting or cutting in my own mix, which is less to do with making it
sound better, and more to do with myself compesating for my dodgy
hearing by altering the overall EQ of the song...
Mark
On 13/07/2010, Chris Belle <[email protected]> wrote:
> Read the second part of his message, he mentioned both.
>
> At 11:31 PM 7/12/2010, you wrote:
>>...He said high pass.
>>On 7/12/2010 9:22 PM, Chris Belle wrote:
>>>I agree about the low pass filters,
>>>unless I'm going for a low fi sound on purpuse, because even on a
>>>voice chopping off too much of the top end makes it sound yucky.
>>>
>>>Like a library of congress talking book tape 'smile'.
>>>
>>>At 07:06 AM 7/12/2010, you wrote:
>>>>I often tend to do it quite similar I think... Not sure how
>>>>'authodox' it is, but my useual approach is to stick the track or bus
>>>>EQ on, and put a 'high pass' filter on, and starting from the bottom
>>>>raise the frequency until I just* notice its cut out a bit of audible
>>>>sound; basically filtering off the frequencies that people either
>>>>can't hear, or don't have the speakers to be able to reproduce.
>>>>
>>>>Having said that, I can definately hear down to 20 HZ on my monitors,
>>>>and on my larger HiFi speakers, but its just not there at all on my
>>>>little HiFi speakers or my small monitor speakers (an early purchase
>>>>on route to the somewhat better set-up I have now)...
>>>>
>>>>I've also tried the same with putting a low pass filter on, and
>>>>starting at a high frequency moving down, but I just don't like the
>>>>sound when your missing even the very high frequencies (though again
>>>>I'm guessing much of what you hear as you say is the harmonics of
>>>>audio with frequencies above 22 or 23 KHZ - still supprized I can
>>>>hear the high frequences now I'm getting a little* older...)
>>>>
>>>>Actually, there were some good articles and guides about using EQ in
>>>>Sound on Sound magazine (which are free online as they're oldish
>>>>articles), and also on audio tuts (think that is spelt right). :- I
>>>>sometimes go back to these from time to time just to remind myself,
>>>>especially when I can't achieve what I want with an EQ; they've got
>>>>good articles on compression and limiting too, and no doubt other FX
>>>>that we use.
>>>>
>>>>Mark
>>>>
>>>>On 12/07/2010, Chris Belle <[email protected]> wrote:
>>>> > Using a high pass filter to cut out inaudible frequencies and then
>>>> > boosting the useable ones with a shelf
>>>> > is an excellent way to thump the house with kick-ass bass without
>>>> > eating up all the headroom in your mix.
>>>> >
>>>> > A good multi-band compressor and maybe a harmonic re-enforcement can
>>>> > do the rest.
>>>> >
>>>> > For for most music I do,
>>>> > I don't need that much low end bass, it's not abou the fundamental
>>>> > frequencies but the harmonics anyway,
>>>> > even high end decent monitor speakers don't generally rate down
>>>> to 20 hertz,
>>>> > because you just don't have that much useable stuf down there.
>>>> >
>>>> >
>>>> > At 04:47 PM 7/11/2010, you wrote:
>>>> >>Having played about with EQ a fair bit within sonar on my half-decent
>>>> >>Alesis prolinear monitors, and even with my less than perfect hearing
>>>> >>these days, I can hear down to about 20 HZ, but as said, once down
>>>> >>any further than that its more a question of 'feeling' the vibrations
>>>> >>rather than 'hearing' them.
>>>> >>
>>>> >>Actually it quickly becomes easier to hear the doors and various
>>>> >>instruments in my room start vibrating once you go down below 20 HZ or
>>>> >>thereabouts.
>>>> >>
>>>> >>I often tend to put a filter on to take out most frequencies below
>>>> >>about 27 HZ as they take up a lot of headroom in the mix, and seeing
>>>> >>as how most people can't hear the frequencies down there (either
>>>> >>because of their hearing, or as is more often the case, because of
>>>> >>poor speakers they're using.), your not really cutting anything out of
>>>> >>the mix.
>>>> >>
>>>> >>Mark
>>>> >>
>>>> >>On 11/07/2010, Drew <[email protected]> wrote:
>>>> >> > k=killo. killo=a thousand. A thousand=1k!
>>>> >> > The human ear can only hear as low as 20HZ; below that you
>>>> start getting
>>>> >> > into the fundamental molecular bonds and it's more a vibration than
>>>> >> > a
>>>> >> > sound; rather dangerous ones at those levels, actually.
>>>> >> > On 7/11/2010 1:08 PM, Blake Hardin wrote:
>>>> >> >> Hi all, been going through the golden ears program and i
>>>> was wondering
>>>> >> >> is there a reason why he goes from 31 hz, 63 hz, 125 hz, 250 hz,
>>>> >> >> 500
>>>> >> >> hz, 1 KHZ, 2 KHZ, 4 KHZ and so on? What i mean is there an
>>>> order of hz
>>>> >> >> and khz that needs to be memorized so to speak? And is there any
>>>> >> >> reason why he is just doubling the numbers? What is the
>>>> lowest HZ that
>>>> >> >> you can go down to that a sub will pick up? The lowest i have seen
>>>> >> >> is
>>>> >> >> i believe 27 hz or maybe 31 hz. Is there not a 1 HZ? or a 10 HZ?
>>>> >> >> lol
>>>> >> >> Im guessing you cant go down that low? Thanks.
>>>> >> >>
>>>> >> >> _______________________________________________
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>>>> >> >
>>>> >> >
>>>> >> > _______________________________________________
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>>>> >>
>>>> >>
>>>> >>--
>>>> >>Mark Faben
>>>> >>
>>>> >>_______________________________________________
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>>>>--
>>>>Mark Faben
>>>>
>>>>_______________________________________________
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>>
>>_______________________________________________
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>>
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