John Mulcahy's latest activity
-
John Mulcahy replied to the thread Speaker Design Measurement - Frequency Discrepancy with Analog Microphone.The interface looks to be picking up a strong 50 Hz hum component, which isn't helping, but that's not enough to account for the peak at... -
John Mulcahy replied to the thread REW Beta Release REW API beta releases.I think rePhase is a good application and I don't want to spend time reproducing it.
-
John Mulcahy replied to the thread Speaker Design Measurement - Frequency Discrepancy with Analog Microphone.I wondered if there was some sample rate issue, but FlexASIO would handle the sample rate (as would REW's Java WASAPI Exclusive...
-
John Mulcahy replied to the thread Speaker Design Measurement - Frequency Discrepancy with Analog Microphone.Are you using the WASAPI Exclusive drivers with the external interface, i.e. device names starting EXCL?
-
John Mulcahy replied to the thread REW Beta Release REW API beta releases.Looks like you used offset t=0 on a measurement with no IR. That should be possible if the measurement has phase (it will adjust the...
-
John Mulcahy replied to the thread Normalising measurements taken with different dBFS levels.Adding the offset will compensate for the sweep level change (e.g. if you drop the sweep level 10 dB, add a 10 dB SPL offset). That will...
-
John Mulcahy replied to the thread Normalising measurements taken with different dBFS levels.You can reduce the sweep level and later add an SPL offset to the measurements to allow for the reduction.
-
John Mulcahy replied to the thread REW Beta Release REW API beta releases.Builds updated today (beta 84) with these changes: Added: API /measurements/command "Dirac" to generate a pure impulse with a specified...
-
John Mulcahy replied to the thread REW Beta Release REW API beta releases.Sorry, but I have no idea why the scope would be different to any other REW tool that uses audio input. The SPL meter, level meters...
-
John Mulcahy replied to the thread REW Beta Release REW API beta releases.Try starting the scope before starting the generator. Check Audio Midi Setup to make sure the input and output sample rates there are...
-
John Mulcahy replied to the thread Distortion Measurements - "normalization" no longer working..?.The graph Y axis is SPL. If you want a normalised view choose % or dBr for the axis.
-
John Mulcahy replied to the thread REW Beta Release REW API beta releases.I have fixed that for the next build, but it would also work if you had more than one measurement loaded since selecting a free air...
-
John Mulcahy replied to the thread REW Beta Release REW API beta releases.That display is intended for use with the filtered IR used by the alignment tool, the range is automatically scaled to suit the filter...
-
John Mulcahy replied to the thread REW Beta Release REW API beta releases.Builds updated today (beta 83) with these changes: Changed: Removed fallback detection of UMIK-1 on Windows via its USB device...
-
John Mulcahy replied to the thread Different plots in ALL SPL vs SPL & Phase.The EQ window shows the currently selected individual measurement, which is measurement 5. On the All SPL plot (which is an overlay) you...