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diff --git a/libs/fluidsynth/src/fluid_conv_tables.h b/libs/fluidsynth/src/fluid_conv_tables.h
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+++ b/libs/fluidsynth/src/fluid_conv_tables.h
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+
+#ifndef _FLUID_CONV_TABLES_H
+#define _FLUID_CONV_TABLES_H
+
+/*
+ Attenuation range in centibels.
+ Attenuation range is the dynamic range of the volume envelope generator
+ from 0 to the end of attack segment.
+ fluidsynth is a 24 bit synth, it could (should??) be 144 dB of attenuation.
+ However the spec makes no distinction between 16 or 24 bit synths, so use
+ 96 dB here.
+
+ Note about usefulness of 24 bits:
+ 1)Even fluidsynth is a 24 bit synth, this format is only relevant if
+ the sample format coming from the soundfont is 24 bits and the audio sample format
+ choosen by the application (audio.sample.format) is not 16 bits.
+
+ 2)When the sample soundfont is 16 bits, the internal 24 bits number have
+ 16 bits msb and lsb to 0. Consequently, at the DAC output, the dynamic range of
+ this 24 bit sample is reduced to the the dynamic of a 16 bits sample (ie 90 db)
+ even if this sample is produced by the audio driver using an audio sample format
+ compatible for a 24 bit DAC.
+
+ 3)When the audio sample format settings is 16 bits (audio.sample.format), the
+ audio driver will make use of a 16 bit DAC, and the dynamic will be reduced to 96 dB
+ even if the initial sample comes from a 24 bits soundfont.
+
+ In both cases (2) or (3), the real dynamic range is only 96 dB.
+
+ Other consideration for FLUID_NOISE_FLOOR related to case (1),(2,3):
+ - for case (1), FLUID_NOISE_FLOOR should be the noise floor for 24 bits (i.e -138 dB).
+ - for case (2) or (3), FLUID_NOISE_FLOOR should be the noise floor for 16 bits (i.e -90 dB).
+ */
+#define FLUID_PEAK_ATTENUATION  960.0f
+
+#define FLUID_CENTS_HZ_SIZE     1200
+#define FLUID_VEL_CB_SIZE       128
+#define FLUID_CB_AMP_SIZE       1441
+#define FLUID_PAN_SIZE          1002
+
+#endif