A musical interval embracing eight diatonic degrees

The human hearing range covers 10 octaves from 20 Hz to 20K Hz. An octive in this regard is the doubling of the freq. Example: 20-40 Hz is one octave, 40-80 is another octave. 250-500 is an octave, 500-1k, 1k -2k, 2k-4k and so on.

 

Can't find the exact definition/discussion about the term here, but here:
http://en.wikipedia.org/wiki/Octave

does that help?

 

smgreen is right. Its the doubling of a frequency. One octave is a two to one change in frequency.
Search the internet, there is tons of information on this stuff.

 

Thanks to all, that helps a lot. So, are EQ bands arranged in octaves or fraction of octaves?

If a 1/3 octave EQ is compared to a 1/24 octave EQ, that means that the 1/24 octave EQ has 8 times more equalization control points over a specific frequency range?

Am I getting this?

 

you got it.

 

it's also a halving of frequencies.

 

But is it set to certain frequencies or can you go with any random frequency like 37hz and double it to 74hz and that's an octave?

 

It's not set frequencies. You have to have one freq. number as a reference to go up or down an octave or fraction thereof.

 

http://en.wikipedia.org/wiki/Octave

Examples

An example of an octave, from G4 to G5For example, if one note has a frequency of 400 Hz, the note an octave above it is at 800 Hz, and the note an octave below is at 200 Hz. The ratio of frequencies of two notes an octave apart is therefore 2:1. Further octaves of a note occur at 2n times the frequency of that note (where n is an integer), such as 2, 4, 8, 16, etc. and the reciprocal of that series. For example, 50 Hz and 400 Hz are one and two octaves away from 100 Hz because they are ½ (or 2 −1) and 4 (or 22) times the frequency, respectively. However, 300 Hz is not a whole number octave above 100 Hz, despite being a harmonic of 100 Hz.


[edit] Musical relevance

 

Interesting, I'm going to attempt to word my question correctly...

Say a speaker is set up to run from 50hz to 400hz, and lets assume the speakers do not have a crossover and just start and stop at those frequencies. The next speaker goes from 400-3200hz. In terms of what was just said, they are both playing 4 octaves.

The simple mathematical difference is 350hz and 2800hz respectively, right? I have been told in the past that this 350hz mid-bass range is basically the same as the 2800hz midrange. Are we only speaking from the human ear perspective? Are we just basing these ranges on the standard western 7 note scale?

 

Once we get this halving and doubling down, we'll move on to harmonics

100 hurts [ one octave down ? Bueller ? 50 hurts ! ], [ one octave up ? Ferris ? 200 hurts ! ].

Har mon ics , even order & odd order...

 

This is getting better and better, it somewhat reminds me of my basic electrical/computer engineering classes. This is good stuff, please go on to harmonics...

 

When I think of octave, I think of music notes, from one C to the next C.

 

As well you should, scales [ etc.., ].

 

An octave is the interval between two frequencies, in which the highest frequency is exactly twice the lowest one.

 

What do you know? You only have one post!










Still taking good care of that Holman, Manville?

 

manville's finally join the dark side.

 

I'll try to stay out of trouble.

And, yes, the Holman is still kickin'.

 

 

I think 15 years wins the Necro award for sure.

 

I think 15 years wins the Necro award for sure.
View attachment 410139

15 years out an octave below 30?

 

It smells like cypresses