REW Beta Release REW API beta releases
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John Mulcahy
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John Mulcahy
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You can get that from the graph metrics.
Hello John, is there a way to disable the Data Offset when importing WAV files?
For example, let’s assume that a Dirac Pulse is generated in REW, which has an offset of 0.
When it is re-imported, an offset is applied. (This also happens with various WAV files, including those generated in RePhase.)
And in the case of a simple pulse like this, applying the Data Offset is intuitive.
However, for something like noise, it can be more difficult to determine.
Something like this.
Is there any way to disable this feature?
For example, let’s assume that a Dirac Pulse is generated in REW, which has an offset of 0.
When it is re-imported, an offset is applied. (This also happens with various WAV files, including those generated in RePhase.)
And in the case of a simple pulse like this, applying the Data Offset is intuitive.
However, for something like noise, it can be more difficult to determine.
Something like this.
Is there any way to disable this feature?
serko70
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You can find the volume offset applied to the imported impulse in the Info window under "Data offset"
serko70
Member
More
- Preamp, Processor or Receiver
- Marantz SR6015
- Main Amp
- Rotel Michi X3
- DAC
- Oppo 205
- Computer Audio
- Intel NUC
- Universal / Blu-ray / CD Player
- Oppo 205
- Streaming Subscriptions
- TIDAL, ROON
- Front Speakers
- Focal Kanta 2
- Center Channel Speaker
- Linn Trikan
- Surround Speakers
- Focal Dome Flax
- Surround Back Speakers
- Focal Dome Flax
- Front Height Speakers
- Focal Dome Flax
- Rear Height Speakers
- Focal Dome Flax
- Subwoofers
- Focal Sub Air
- Video Display Device
- LG 65 3D OLED
120dB, you have to apply -120dB offset to that response...
wow.
If different offsets are applied to each impulse, does subtracting that value make all the volumes equal?
I was aware of those offsets, but it seems I misunderstood them to some extent.
John Mulcahy
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The offset depends on the input device, it converts dBFS values from the input data to SPL according to the input SPL calibration.
John Mulcahy
At the bottom of the Measurement info panel, the Output FS sine line should show the current measurement level?
John Mulcahy
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No, it shows the full scale ("FS") voltage for the output.
John Mulcahy
REW Author
Thread Starter
- Joined
- Apr 3, 2017
- Posts
- 8,186
Builds updated today (beta 66) with these changes:
- Added: The Impulse graph has an "Apply 2Hz HP" action to help counter the effect of DC offsets in measurements
- Fixed: FSAF file selector was disabled after making a sweep measurement
- Fixed: Loading a large number of measurements or importing a large number of files was very slow
- Fixed: Saving a large number of measurements was very slow
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