What chart is that called?

M2E · 13th May 2004

Hey Fellas,

What chart is that called when you know the key of the song and you want to add those freq. to your mix to bring it out?. Also where can I find those charts?

Thanx
M2E

kaipiranha · 13th May 2004

Hm. Do you mean something like this?

******//www.cranesong.com/IBIS%20FREQUENCY%20CHART.html

Kai

halcyo · 13th May 2004

excuse me for being uninformed, but what is this chart used for? Is it just explaining the frequencies for all the harmonics of a given note?

halcyo

Jules · 13th May 2004

The producer Tony Visconti is on record for saying he uses those sorts of charts to find frequencys to boost on bass in the dominant key of the tune...

I keep meaning to try it out myself....

thenewyear · 13th May 2004

no this chart just shows the fundamentals freqs of pretty much every note we can hear in equal temperament.

you could use it to work out harmonics so long as you know the harmonic series.

it looks like a useful EQ tool. i will be printing & trying it out.

LTA · 13th May 2004

You can also convert these charts into feet or ms, and use that to create comb filtering.

I'm not going to get into how harmonics work and all, but i'm going to give you an example.

A guitar is in standard EADGBE tuning. You want to slightly accent the E note that is found at the 9th fret of the G string. This would be an E4 at 330 Hz (remember guitar is written an octave higher than it sounds. The lowest note is E2 or 82Hz). Now, using the magic equation d=1130fps/frequency, you come up with the distance being about 3.4 feet. Sorry, all you metric people will have to convert your speed of sound to m/s. So, if you put close mics on a guitar amp, and then measure from the close mics 3.4 feet and put up a distance mic, if you combine these at similar levels the first peak from comb filtering will be right around 330Hz. You then can fine tune the distant mic location by ear, basically "tuning" the comb filtering to peak at the note you want. Think of it as a fretless bass or something, if that helps. The difference, if anything, is subtle in the finished product. I like to think that little stuff like this ends up being worth the effort in the end though. (If i ever did this in practice, i would get the guitar player to play an E at 7th fret of the A string, and tune the comb filtering an octave above that. For a truly unique experience, get an assistant to move the mic towards the close mics while you ride the fader to keep the two inputs at about the same level. wooossssSSSSHHHH!!)

These charts are far more useful than they appear. I wasn't going to explain harmonics, but in this case they'd be 330Hz, 660Hz, 990Hz, 1320, 1650, 1980, etc. I would recommend sitting down in front of a piano or synthesiser (with no pitch transposition) and find the charted frequencies on the keyboard. 262 Hz = C4 = Middle C. Also, just for fun play a root note and then play the harmonics. Hold down the damper pedal too. It may take a bit to figure it out, but i feel it is worth the effort to do this at least once.

M2E · 13th May 2004

I thought that there was an easier chart. Im not sure if this is the one I'm thinking of but I thank you for this one. It will come in handy big time.

Thanx Again
M2E

M2E · 13th May 2004

Also there are other freq inbetween those for each key as well.

13th May 2004	#1
M2E Lives for gear Joined: Nov 2002 Location: In A Galaxy Far Far Away Posts: 1,228 Thread Starter	What chart is that called? Hey Fellas, What chart is that called when you know the key of the song and you want to add those freq. to your mix to bring it out?. Also where can I find those charts? Thanx M2E __________________ "Marc Ellus" http://soundcloud.com/marc-ellus Sorry in advance for any misspelled words, phrases or not using the right meaning/s at the right times. So get over it and back to the post at hand!!! Thanx....

13th May 2004	#4
Jules Gearslutz.com admin Joined: Apr 2002 Location: A Yank in London, UK Posts: 17,808 1 Review written	The producer Tony Visconti is on record for saying he uses those sorts of charts to find frequencys to boost on bass in the dominant key of the tune... I keep meaning to try it out myself.... __________________ Jules Add your reviews to the new reviews area! Gearslutz on Facebook Follow my GS picks on Twitter

13th May 2004	#5
thenewyear Lives for gear Joined: Aug 2003 Location: Scotland Posts: 676 1 Review written	no this chart just shows the fundamentals freqs of pretty much every note we can hear in equal temperament. you could use it to work out harmonics so long as you know the harmonic series. it looks like a useful EQ tool. i will be printing & trying it out. __________________ neil.

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13th May 2004	#2
kaipiranha Gear nut Joined: Oct 2003 Location: Gelsenkirchen, Germany Posts: 79	Hm. Do you mean something like this? ******//www.cranesong.com/IBIS%20FREQUENCY%20CHART.html Kai

13th May 2004	#3
halcyo Lives for gear Joined: Mar 2003 Location: Cincinnati Ohio Posts: 766 2 Reviews written	excuse me for being uninformed, but what is this chart used for? Is it just explaining the frequencies for all the harmonics of a given note? halcyo

13th May 2004	#6
LTA Gear addict Joined: Apr 2004 Location: Chicago Posts: 470	You can also convert these charts into feet or ms, and use that to create comb filtering. I'm not going to get into how harmonics work and all, but i'm going to give you an example. A guitar is in standard EADGBE tuning. You want to slightly accent the E note that is found at the 9th fret of the G string. This would be an E4 at 330 Hz (remember guitar is written an octave higher than it sounds. The lowest note is E2 or 82Hz). Now, using the magic equation d=1130fps/frequency, you come up with the distance being about 3.4 feet. Sorry, all you metric people will have to convert your speed of sound to m/s. So, if you put close mics on a guitar amp, and then measure from the close mics 3.4 feet and put up a distance mic, if you combine these at similar levels the first peak from comb filtering will be right around 330Hz. You then can fine tune the distant mic location by ear, basically "tuning" the comb filtering to peak at the note you want. Think of it as a fretless bass or something, if that helps. The difference, if anything, is subtle in the finished product. I like to think that little stuff like this ends up being worth the effort in the end though. (If i ever did this in practice, i would get the guitar player to play an E at 7th fret of the A string, and tune the comb filtering an octave above that. For a truly unique experience, get an assistant to move the mic towards the close mics while you ride the fader to keep the two inputs at about the same level. wooossssSSSSHHHH!!) These charts are far more useful than they appear. I wasn't going to explain harmonics, but in this case they'd be 330Hz, 660Hz, 990Hz, 1320, 1650, 1980, etc. I would recommend sitting down in front of a piano or synthesiser (with no pitch transposition) and find the charted frequencies on the keyboard. 262 Hz = C4 = Middle C. Also, just for fun play a root note and then play the harmonics. Hold down the damper pedal too. It may take a bit to figure it out, but i feel it is worth the effort to do this at least once.