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Why are frequencies on equalizers unequally spaced?

I've been wondering this awhile now. On the generic Pro Tools graphic equalizer, the frequencies are unequally spaced. For example, there is a large gap between 100hz and 200hz. But between 200hz and 300hz, the gap is about half as wide. Can someone explain the reasoning for this?

The frequency range of male and female voice

The frequency range of male and female voice?In a song, what is the general or most common frequency range in which the voice signals lie ? i looked it up on google and all i got was some charts .i need the frequency range which has statistical proof.that could be used for experimental purposes .links to related study materials would be helpful .

Sidechainable Frequency Agile Compressor?

I've searched high and low, and I can't seem to find a frequency agile compressor with a side chain function... I often use side chain comp on guitars to duck them a bit when the vox come in, and I want to experiment with whether this might be more transparent if I were just compressing the frequency ranges of the guiat most heavily occupied by the vocals...

Determine the cut off frequency of any filter formed from output impedance and input impedance

Say you have a piece of electronic equipment which has an input impedance of 1Megohms, and an input capacitance of 10 picofarads as determined by a ceramic capacitor across the input resistor. This obviously creates an RC impedance filter which will act on any AC entering the device.