John Mulcahy's latest activity
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John Mulcahy replied to the thread Helping to solve Phase measurements being inconsistent with acoustic timing reference and Analog Loopback question.If you use Estimate IR delay on each measurement you are abandoning the timing reference and removing relative timing information... -
John Mulcahy replied to the thread Overlay different distortion readings on the same window?.Use the Distortion graph in the Overlays window. You choose what distortion metric to plot in the graph controls.
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John Mulcahy replied to the thread Optimal REW settings for measuring amplifiers.It's a little difficult to manage. All the legend entries for the various graphs need to keep the same width. I can adapt the width to...
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John Mulcahy replied to the thread Saving loopback calibrations.Shouldn't matter, but you can always try a few measurements at different gains to see if the interface cutoffs vary. With some...
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.Works for me.
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John Mulcahy replied to the thread Saving loopback calibrations.No, select the loopback input and output and use the "Calibrate soundcard" and "Make cal file" buttons on the soundcard preferences.
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.This is the latest beta for the next release (5.40), the current release is 5.31.3, the version on the REW website.
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John Mulcahy replied to the thread Optimal REW settings for measuring amplifiers.The noise floor figure for stepped level THD measurements is the maximum noise level within a one octave span centred on the the...
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John Mulcahy replied to the thread Difference Vector Average and RMS + Phase.In vector average the magnitude response depends on the relative phases of the signals being averaged. In RMS + phase average it doesn't.
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John Mulcahy replied to the thread Feature Request: Make "stop at" option in the RTA unconditional, and allow numbers starting from 1.It is not possible with the current implementation and I am not willing to risk introducing bugs by modifying the behaviour to make it...
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John Mulcahy replied to the thread Virtual balanced input is disabled when using the Scarlett 2i2.There is another possibility: REW takes into account the calibration data for each input to get the most accurate result, if the...
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John Mulcahy replied to the thread Virtual balanced input is disabled when using the Scarlett 2i2.There is additional processing per sample, otherwise no real difference. The sample format might be different for Default input vs the...
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John Mulcahy replied to the thread Virtual balanced input is disabled when using the Scarlett 2i2.REW works with the data it receives. There looks to be odd behaviour in your system, but that is not REW's doing:
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John Mulcahy replied to the thread Anyone use REW to detemrine EQ for mains?.You don't show the target, but REW won't attempt EQ above the last frequency where the response drops below the target. The latest...
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John Mulcahy replied to the thread Virtual balanced input is disabled when using the Scarlett 2i2.Video now available. Looks to be showing frequent dropouts, but then 768 kHz is a very high sample rate to be running, results will...
