John Mulcahy's latest activity
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John Mulcahy replied to the thread level sweep for THD.I have fixed that for the next build. That is the case when the axis only permits certain values. That is awkward to handle as the... -
John Mulcahy replied to the thread SPL V/V graph help.Did you calibrate the full scale voltages for the generator and RTA?
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John Mulcahy replied to the thread Feature request : Display SNR (Signal to Noise ratio).There are overall figures for signal to noise and signal to distortion for sweep measurements in the Info panel. RTA measurements of...
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John Mulcahy replied to the thread Please review my first REW subwoofer reading.Best measuring the channels individually, not L+R. There's quite an increase in 2nd harmonic distortion above 1 kHz in the full range...
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John Mulcahy replied to the thread Issue with Behringer uca202 and HDMI audio.Try the Java WASAPI Exclusive drivers instead of ASIO4All, device names starting EXCL.
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John Mulcahy replied to the thread Set up EQ filters.You can set up the frequency range and step size for the Generic - configurable equaliser entry.
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John Mulcahy replied to the thread Please review my first REW subwoofer reading.Looks like the measurement has worked properly, but best attaching an mdat file.
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John Mulcahy replied to the thread REW And Ambisonics.Yes, but rather a complicated processing task and also complicated to present the results. It is on the list to look at in the future...
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John Mulcahy replied to the thread Get SPL measurement of decay time (single slice of waterfall).You can shift the window reference time and widths to choose a later part of the measurement, but it would not make any sense at all to...
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.I'm away from home until Sunday, I'll look at it then.
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John Mulcahy replied to the thread level sweep for THD.Usually best to enable the distortion LP and distortion HP. A 64k FFT is long enough, no need for 512k.
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.No.
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John Mulcahy replied to the thread level sweep for THD.Why use such a huge step, 20 dB? You end up with a graph that has only two points. Why limit the RTA THD to just 2nd and 3rd harmonic?
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John Mulcahy replied to the thread record the output of a soundbox look strange in excessphase and rt60..The RT60 curve is from the octave band filter delay, there are options to reduce it - see the RT60 graph help.
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John Mulcahy replied to the thread Get SPL measurement of decay time (single slice of waterfall).Use the Spectral decay graph.