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Display 79 - Audio equalizer display
++++++++++++++
+aaaaa bbbbb +
+ccccc ddddd +
+-ee.e -ff.f +
+
++++++++++++++
aaaaa
Saturated samples before microphone equalizer in decimal 16 bit unsigned
integer format.
bbbbb
Saturated samples after microphone equalizer in decimal 16 bit unsigned integer
format.
ccccc
Saturated samples before earpiece equalizer in decimal 16 bit unsigned integer
format.
ddddd
Saturated samples after earpiece equalizer in decimal 1 6 bit unsigned integer
format.
-ee.e
Level of the microphone signal level detector in dB format.
Requires log10 function in MCU. 16 bit signed value in DSP, 0 dB = 32768.
-ff.f
Level of the signal after earpiece equalizer in dB format.
Requires log10 function in MCU. 16 bit signed value in DSP, 0 dB = 32768.
The display is reset and restarted when a call is placed. When the call is terminated the
display is frozen to show the last values. Display will not be saved to EEPROM. Saturated
sample counters aaaaa - ddddd are counted in DSP and only the new counter value is sent to
MCU. The microphone and earpiece signal levels are calculated in DSP and it sends the linear
values to MCU which makes the linear to dB transformation (20*log10(x)) for the level
values.
Example:
++++++++++++++
+12345 54321 +
+ 2353 46187 +
+-46.5 -27.4 +
+
+
++++++++++++++
##############
#MiCutB MiCTA#
#EpCutB EPCTA#
#MicLev EarLv#
+
#
##############
25
#
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