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Equal-loudness-level contour with rePhase
Equal-loudness-level contour with rePhase
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Old 24th April 2021, 09:47 PM   #1
JdM12 is offline JdM12  Switzerland
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Default Equal-loudness-level contour with rePhase

See my web site for a linear-phase equalization freely based on ISO 226:2003 normal contours:

Equal-loudness-level contour

Best regards
Rob
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Old 25th April 2021, 07:55 PM   #2
kaameelis is offline kaameelis  Estonia
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For what SPL levele it is made?
Actually are existing lot of different equal loudness curves.
Some of them are relatively flat at 100 db SPL and probably every person had his own unique curve.
Click the image to open in full size.
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Old 25th April 2021, 10:03 PM   #3
JdM12 is offline JdM12  Switzerland
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Indeed, the sensitiveness to bass of the human ear varies with the volume.
The bass boost I show on the picture is suitable for most situations with a small sound system. But of course it is adjustable to individual listening preferences.
Click the image to open in full size.

Most important is the compensation in the area of maximum hearing sensitiveness, between 1 and 5 kHz, which reduces stridencies.
Click the image to open in full size.

My loudness eq was refined by listening with several types of speakers. I find it really benefits the small ones. On the other hand, such compensation does not seem necessary on my large main system.
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Old 26th April 2021, 05:57 AM   #4
kaameelis is offline kaameelis  Estonia
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If not counting higher than 3 kHz, this curve is close to suggested house curves.


Click the image to open in full size.

To ISO 226:2003 Equal loudness Contours is added also remark:
It is important to note that equal loudness contours represent statistical averages. Moreover, they are the results of experiments using headphones or in a reflection-free environment, so the equivalent loudness level perceived in any other listening environment may vary.
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