John Mulcahy's latest activity
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John Mulcahy replied to the thread export impulse response: 192k flavour has a much lower gain.It should be 12 dB lower (factor of 1/4) to correspond to the increased sample rate and preserve energy. If you import each into REW you... -
John Mulcahy replied to the thread A question on the EQ function.They usually would be, assuming the channel levels are well matched to start with.
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.Builds updated today (beta 102) with this change: Fixed: Group delay plots were incorrect when the IR peak was offset from t = 0 by...
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.That group delay bug has been fixed for the next build.
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.Both measurements have significant time delays, so their phase responses go through many wraps, causing issues with the group delay...
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John Mulcahy replied to the thread Help understanding Alignment Tool.Not sure I follow. Phase should be aligned around the crossover frequency.
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.Not really possible to say from looking at an image. Attach the mdat file, that may have some clues.
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John Mulcahy replied to the thread REW EQ filters to parametric eq plugin on MAC.A tool to convert REW/APO EQ to AUNBandEQ or RME EQ
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John Mulcahy replied to the thread Help understanding Alignment Tool.No, the dotted line just shows what would happen if both were perfectly in phase everywhere. It doesn't mean that's what you want, it...
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John Mulcahy replied to the thread Help understanding Alignment Tool.RMS average is an incoherent summation (assumption of random phases, essentially), the dotted line is a coherent summation.
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John Mulcahy replied to the thread IMD Measurements: "Generator" vs "Input" Level Discrepancy.Looks like an issue with the Java runtime or the video driver.
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John Mulcahy replied to the thread IMD Measurements: "Generator" vs "Input" Level Discrepancy.The Info panel shows information for the current individual measurement selection, the one with the blue bar on an overlay graph like...
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John Mulcahy replied to the thread Alignment tool : Hide resulting phase trace.That option is in the V5.40 beta release.
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John Mulcahy replied to the thread IMD Measurements: "Generator" vs "Input" Level Discrepancy.It's possible, yes, since the measures have different reference levels.
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John Mulcahy replied to the thread Optimal REW settings for measuring amplifiers.Interface behaviour can also change with sample rate, best check that. For headphone amps 48k should be fine.