John Mulcahy's latest activity
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John Mulcahy replied to the thread FSAF (Fast subband adaptive filtering) measurement.No, it is just showing a power spectrum to give an indication of the spectral content. That's an artefact of resampling the source data... -
John Mulcahy replied to the thread REW Beta Release REW API beta releases.Are you using the "Add to data" button?
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.All SPL (and other overlay tabs) allow multiple selections, so drag and drop is not as straightforward. It becomes easy if you first...
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John Mulcahy replied to the thread FSAF (Fast subband adaptive filtering) measurement.Because there is clipping somewhere along the path for higher levels. Stop over-driving the system or adjust gains to stop the clipping.
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John Mulcahy replied to the thread clicks and clock adjustment too large.Although unrelated to your problem, it isn't a good idea to use such a large input device buffer. 16k is usually fine. The LatencyMon...
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.Builds updated today (beta 72) with these changes: Changed: Adding an SPL offset to an FSAF measurement will offset the distortion SPL...
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.I'll add that to the todo list.
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John Mulcahy replied to the thread Q to John - How does the sweep work?.Google "Transfer-Function Measurement with Sweeps DIRECTOR’S CUT INCLUDING PREVIOUSLY UNRELEASED MATERIAL"
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John Mulcahy replied to the thread clicks and clock adjustment too large.This thread has some tips. A recent Windows 11 update has also been reported as causing problems with USB audio output. Make sure you...
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John Mulcahy replied to the thread Is my interface (iD14) cooked?.Set up the Audient so the output is "DAW Thru".
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John Mulcahy replied to the thread Q to John - How does the sweep work?.Windowing is applied to the impulse response derived from the sweep, not to the sweep capture itself.
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John Mulcahy replied to the thread Is my interface (iD14) cooked?.You have monitoring active so the input is being mixed back to the output, you need to disable that.
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John Mulcahy replied to the thread How to measure Gain through a chain of stages using REW.Use a sine wave and the RTA, if you calibrate the generator and RTA levels REW will show the gain to the measurement point in the RTA...
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.Adding an SPL offset should have no effect on FSAF distortion data, it is excluded from that. I can make it offset all the FSAF...
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John Mulcahy replied to the thread REW Beta Release REW API beta releases.Builds updated today (beta 71) with these changes: Added: API has an /import/impulse-response-data endpoint to import impulse responses...