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Junior Varsity
help with hz to octave conversion for dsp
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<blockquote data-quote="John Roberts" data-source="post: 57930" data-attributes="member: 126"><p>Re: help with hz to octave conversion for dsp</p><p></p><p></p><p></p><p>The Q or octaves of a simple bandpass section can be established with good agreement, but how this bandpass is then applied to make the variable boost/cut response gives us different response shapes for different amounts of boost/cut even when using the identical base BP filter shape, thus the discrepancy. </p><p></p><p>This is an old problem and very noticeable with analog 1/3rd octave GEQ that are not all the same, despite all being 1/3 octave. There is only a small handful of different approaches and RANE has named theirs and done some Rosseta stone work on conversion between several. </p><p></p><p>I just don't want the OP to think it's his math skills that are to blame... the manufacturers have not yet been suitably motivated to solve this. </p><p></p><p>JR</p></blockquote><p></p>
[QUOTE="John Roberts, post: 57930, member: 126"] Re: help with hz to octave conversion for dsp The Q or octaves of a simple bandpass section can be established with good agreement, but how this bandpass is then applied to make the variable boost/cut response gives us different response shapes for different amounts of boost/cut even when using the identical base BP filter shape, thus the discrepancy. This is an old problem and very noticeable with analog 1/3rd octave GEQ that are not all the same, despite all being 1/3 octave. There is only a small handful of different approaches and RANE has named theirs and done some Rosseta stone work on conversion between several. I just don't want the OP to think it's his math skills that are to blame... the manufacturers have not yet been suitably motivated to solve this. JR [/QUOTE]
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help with hz to octave conversion for dsp
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