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<blockquote data-quote="John Roberts" data-source="post: 57914" data-attributes="member: 126">Re: help with hz to octave conversion for dspWow, a new group that hasn&#039;t heard my whine about Q/Octaves... OK where are the -3dB points for an EQ with only 2 dB of boost?To the best of my knowledge there is not a single widely accepted definition for Q for boost/cut EQ sections, but a few different definitions based on topology or algorithm. So it is not a matter of execution of math, but what math to use. I asked the AES standards committee to address this years ago. AFAIK no results after the initial discussion that agreed there was an issue... I got tired and stopped bugging them. For individual users, ask whoever gave you the number, what platform they got it from. I don&#039;t know if we are there yet with technology, but it would be nice to publish the complete desired frequency response plot in some useful digital media that could be compared. Maybe we could agree on that? JR</blockquote>

[QUOTE="John Roberts, post: 57914, member: 126"] Re: help with hz to octave conversion for dsp Wow, a new group that hasn't heard my whine about Q/Octaves... OK where are the -3dB points for an EQ with only 2 dB of boost? To the best of my knowledge there is not a single widely accepted definition for Q for boost/cut EQ sections, but a few different definitions based on topology or algorithm. So it is not a matter of execution of math, but what math to use. I asked the AES standards committee to address this years ago. AFAIK no results after the initial discussion that agreed there was an issue... I got tired and stopped bugging them. For individual users, ask whoever gave you the number, what platform they got it from. I don't know if we are there yet with technology, but it would be nice to publish the complete desired frequency response plot in some useful digital media that could be compared. Maybe we could agree on that? JR [/QUOTE]

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