Currently trying to estimate some room gain effects(to get a rough idea) from a graph in winisd, problem is i dont know how many hz are in an octave, I know that room gain (pressure vessel) starts at 70hz for me. So yeah how many hz per octave? I decided that 6db/oct. is a good conservative estimate as a room does have losses.
Oh yeah...
I ORDERED THE ATLAS!!!!
wish me luck in enclosure building!
Oh yeah...
I ORDERED THE ATLAS!!!!
wish me luck in enclosure building!
Octaves are relative, one octave up is double the frequency, one octave down is half the frequency. There's no fixed number of hertz between octaves.
How low of a C? 7 octaves on a piano, 3 above the middle octave, 3 below the middle octave. So, 440 Hz middle a goes down to 220, 110, 55Hz. So your low 'C's are a few Hz above those frequencies.
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Danny
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Danny
If room gain start at 70 Hz for you, then at 35 Hz you'll be at +6 and at 17.5 Hz you'll be at +12.
You could draw a straight line in your head on the WinISD logarithmic scale, starting at 70 Hz and going to -12 dB at 17.5 Hz.
So if your subwoofer is following this straight line, room gain will bring it even.
You could draw a straight line in your head on the WinISD logarithmic scale, starting at 70 Hz and going to -12 dB at 17.5 Hz.
So if your subwoofer is following this straight line, room gain will bring it even.
search the site and all shall be revealed 😉 :http://www.diyaudio.com/forums/showthread.php?s=&threadid=30038&highlight=
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