Certes KLEAR AUDIO KLR1m, User Manual

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Calculation Parameters:
“Skip impulse frames from start/end” – discards first and last n measurement swipes
allowing, for example, going from PC to a measurement place.
“Time window file” – to browse for time window file. Time window files are stored in
TW folder. First 3 symbols in filename represents it length in ms. Next frequency value
roughly represents lowest frequency for accurate analysis. You can see the time window
curve in the Impulse Response tab of the Graphs window.
“Low frequency limiter” – sets equalizer maximum gain value limit for low
frequencies.
“High frequency limiter” – sets equalizer maximum gain value limit for high
frequencies.
“Ignore curve until” – sets the curve value to value defined by “Low frequency
limite r” for all frequencies up to the frequency set by this parameter, ignoring values
of the currant measured curve.
“EQ zero level” – changes the place of a zero point of curves. The setting of this
parameter to +3 dB will increase overall equalizer gain by 3 dB.
“Low frequency cut” – adds HPF to equalizer curve.
“Smoothing filter length in octave” – sets smoothing performance to remove any
residual narrow band curve disturbances caused by a finite number of measurement
points.
“Filter settings ” – sets synthesized equalizer FIR filter parameters. The filter size for
APL1 device must be 4096!
“Filter sampling frequency” – sets sampling frequency for synthesized equalizer FIR
filter. The filter sampling frequency for APL1 device must be 48000!
“Compensations, corrections, targets” – place to add additional curves –
measurement microphone compensation or sound card compensation curves for
example. The curve file must contain two columns
– frequency, dB. If the curve file does
not contain all frequency points as need for APL Workshop software, the interpolation
tool will be started to interpolate curve and save it with all frequency points as needed
for APL Workshop software.
“ Fields ”
comment field , check box to activate
file name field , brows button, view button, C or T drop down box to set
“Correction” or “Target”. If “C” is set, the additional curve will affect measured PFR
curve (green on graphs). If “T” is set, the additional curve will affect just equalizer
curve (yellow) created.
Any additional curve added in first 5 places will be subtracted from measured
curve.
You may treat this as “please, do not correct things that are described by curves”