Correcting wrong dB value for default sound power level

parent 085ae57f
......@@ -947,7 +947,7 @@ mute_state = va.get_sound_source_muted( S )
<pre><code>va.set_sound_source_sound_power( S, P )
P = va.get_sound_source_sound_power( S )
</code></pre>
The default value of <b>31.67 mW (65 dB re 10e-12 Watts)</b> corresponds to <b>1 Pascal (94.0 dB SPL re 20e-6 Pascal ) in a distance of 1 m</b> for spherical spreading. The final gain of a sound source is linked to the input signal, which is explained below. However, a <b>digital signal with an RMS value of 1.0</b> (e.g., a sine wave with peak value of sqrt(2)) will retain 94 dB SPL @ 1m. A directivity may alter this value for a certain direction, but a calibrated directivity will not change the overall excited sound power of the sound source when integrating over a hull.
The default value of <b>31.67 mW (105 dB re 10e-12 Watts)</b> corresponds to <b>1 Pascal (94.0 dB SPL re 20e-6 Pascal ) in a distance of 1 m</b> for spherical spreading. The final gain of a sound source is linked to the input signal, which is explained below. However, a <b>digital signal with an RMS value of 1.0</b> (e.g., a sine wave with peak value of sqrt(2)) will retain 94 dB SPL @ 1m. A directivity may alter this value for a certain direction. Here, two approaches are common. A power calibrated directivity database will not change the overall excited sound power of the sound source when integrating over a hull, which may influence the spectrum to the front. A referenced directivity will not affect the spectrum of reference direction, usually the front - the frequency values all become 1.0 (0 dB).
</p>
<p>A list of all available sound sources returns the function
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment