<p>There is nothing wrong with processing data uncalibrated, i.e. using ADC values, and to add calibration at the end, i.e. when presenting the result.</p>
<p>You only have to avoid (or take into acount) any rescaling of the data by the signal processing package you are using. There is no signal processing standard and, IIRC, there are some packages that rescale data when no calibration is given.</p>

CC BY-SA 4.0
2024-03-13T06:43:59.420Z
2024-03-13T06:43:59.420Z
WMXZ
<p>I've not tried this, so can't vouch that these instructions are current and still applicable, but detailed procedures for various types of calibration within Raven Pro appear to be documented at:</p>
<p><a href="https://www.ravensoundsoftware.com/knowledge-base/calibrating-recordings-in-raven-pro/" rel="nofollow noreferrer">https://www.ravensoundsoftware.com/knowledge-base/calibrating-recordings-in-raven-pro/</a></p>
<p>Since links and content can disappear, Here's a quoted excerpt of instructions for an end-to-end calibration (via recording of a calibrated sound source AKA calibration tone):</p>
<blockquote>
<ol>
<li><p>Create a selection containing just the calibration signal in Raven.</p>
</li>
<li><p>Open the Calibrate Sound dialog by choosing Edit &gt; Calibrate…</p>
</li>
<li><p>In the Calibrate Sound dialog (Figure 4), choose Preset &gt; Medium, then choose “Air”, “Freshwater”, or “Seawater”.</p>
</li>
<li><p>Enter quantities into the Known Quantity panel:</p>
<p>A. choose Pressure as the known quantity</p>
<p>B. choose Active Selection RMS from the menu to the right of Pressure</p>
<p>C. choose either “dB” or “microPa” as the units</p>
<p>D. enter the known RMS sound pressure for the calibration tone (in either dB or µPa).</p>
</li>
</ol>
<p>Once your recording has been calibrated, the vertical axis of the
waveform view will be labeled in pressure units (µPa) rather than
dimensionless sample units. Power density values in the spectrogram,
spectrogram slice, selection spectrum, and colorbar views will be
shown in dB re the appropriate reference value rather than dBFS (dB
relative to full-scale sample values).</p>
</blockquote>
<p>So yes, you can just apply the calibration yourself if you like. But you could also try to let Raven do it for you if that's more convenient.</p>

CC BY-SA 4.0
2024-08-12T06:40:47.250Z
2024-08-12T06:40:47.250Z
Brian Miller
<p>I added in-band power and average power measurements to my selection table in Raven. I also have the end to end calculation of my instruments. To calculate the received levels, is it just a matter of adding the values together?</p>
<p>I know Raven has a calibration option, but I cannot edit or add anything to it. Given my calibration is straight forward, being end-to-end, can I just easily calculate it myself?</p>
<p>Thank you for your time!</p>

<pam><calibration><raven><received-level>
How to Translate Power Metrics in Raven Pro to Received Levels
# How to Translate Power Metrics in Raven Pro to Received Levels

(Asked by: username_0 on 2024-03-13)

I added in-band power and average power measurements to my selection table in Raven. I also have the end to end calculation of my instruments. To calculate the received levels, is it just a matter of adding the values together?

I know Raven has a calibration option, but I cannot edit or add anything to it. Given my calibration is straight forward, being end-to-end, can I just easily calculate it myself?

Thank you for your time!

**Tags:** pam, calibration, raven, received-level


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## 2 answers

### Answer by username_1 on 2024-03-13. Score: 2

There is nothing wrong with processing data uncalibrated, i.e. using ADC values, and to add calibration at the end, i.e. when presenting the result.

You only have to avoid (or take into acount) any rescaling of the data by the signal processing package you are using. There is no signal processing standard and, IIRC, there are some packages that rescale data when no calibration is given.


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### Answer by username_2 on 2024-08-12. Score: 2

I've not tried this, so can't vouch that these instructions are current and still applicable, but detailed procedures for various types of calibration within Raven Pro appear to be documented at:

<https://www.ravensoundsoftware.com/knowledge-base/calibrating-recordings-in-raven-pro/>

Since links and content can disappear, Here's a quoted excerpt of instructions for an end-to-end calibration (via recording of a calibrated sound source AKA calibration tone):

> 1. Create a selection containing just the calibration signal in Raven.
> 2. Open the Calibrate Sound dialog by choosing Edit > Calibrate…
> 3. In the Calibrate Sound dialog (Figure 4), choose Preset > Medium, then choose “Air”, “Freshwater”, or “Seawater”.
> 4. Enter quantities into the Known Quantity panel:
>
>    A. choose Pressure as the known quantity
>
>    B. choose Active Selection RMS from the menu to the right of Pressure
>
>    C. choose either “dB” or “microPa” as the units
>
>    D. enter the known RMS sound pressure for the calibration tone (in either dB or µPa).
>
> Once your recording has been calibrated, the vertical axis of the
> waveform view will be labeled in pressure units (µPa) rather than
> dimensionless sample units. Power density values in the spectrogram,
> spectrogram slice, selection spectrum, and colorbar views will be
> shown in dB re the appropriate reference value rather than dBFS (dB
> relative to full-scale sample values).

So yes, you can just apply the calibration yourself if you like. But you could also try to let Raven do it for you if that's more convenient.


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