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<blockquote data-quote="Phil Graham" data-source="post: 125056" data-attributes="member: 430">Re: My Current SH46 SettingsFor those having a hard time visualizing the filter taps, I took the liberty of graphing them versus time in Excel, and have put that image below:[ATTACH]153660[/ATTACH]As a simplified explanation, the FIR has to have coefficients (i.e. taps) before time &quot;zero&quot; to manipulate the phase in the way that Frank desires. They way that this is achieved in practice is to shift the virtual zero point by enough samples to allow taps that occur &quot;backwards&quot; in time.In this case sample 197 has the impulse peak of &quot;1&quot; and that corresponds to a time of 4.10ms. Thus, the total delay of the FIR before the nominal zero time is approximately 4.10ms. The total length of the FIR taps is eight milliseconds. The extra delay incurred is approximately half the total length of the filter taps.If you&#039;ve used a convolution reverb before, a useful way to think of the FIR filter taps is like a specially constructed impulse response like the kind you might load in a reverb plugin to convolve with a signal source.</blockquote>

[QUOTE="Phil Graham, post: 125056, member: 430"] Re: My Current SH46 Settings For those having a hard time visualizing the filter taps, I took the liberty of graphing them versus time in Excel, and have put that image below: [ATTACH=CONFIG]153660.vB5-legacyid=10395[/ATTACH] As a simplified explanation, the FIR has to have coefficients (i.e. taps) before time "zero" to manipulate the phase in the way that Frank desires. They way that this is achieved in practice is to shift the virtual zero point by enough samples to allow taps that occur "backwards" in time. In this case sample 197 has the impulse peak of "1" and that corresponds to a time of 4.10ms. Thus, the total delay of the FIR before the nominal zero time is approximately 4.10ms. The total length of the FIR taps is eight milliseconds. The extra delay incurred is approximately half the total length of the filter taps. If you've used a convolution reverb before, a useful way to think of the FIR filter taps is like a specially constructed impulse response like the kind you might load in a reverb plugin to convolve with a signal source. [/QUOTE]

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