jthedering
b8cdd47f71
Added: Configuration Editor, which allows to edit configurations in a graphical user interface. Contains GUIs for most commands supported by E-APO, but as lines can also be edited directly, all commands can be used. Added: Command "GraphicEQ", which can act as a regular, fixed-band graphic equalizer (via the GUI) but also supports variable bands so that any desired frequency response can be specified. Internally, it is implemented via convolution with a generated IR. Added: Command "Convolution", which allows to convolve the signal with a user-provided impulse response to achieve e.g. equalization or reverberation effects. Improved: Configurator performs checks for registry values that are needed for the operation of E-APO, which may be changed by driver installations, fixing the values if necessary. Improved: Configurator shows which is the default device as a hint to the user.
18 lines
522 B
Plaintext
18 lines
522 B
Plaintext
# This shows how to create a lowpass biquad filter using the IIR filter type
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# The result should be equivalent to the command
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# Filter: ON LP Fc 3000 Hz
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Do: `freq = 3000`
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Do: `Q = 1/sqrt(2)`
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Do: `omega = 2 * pi * freq / sampleRate`
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Do: `sn = sin(omega)`
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Do: `cs = cos(omega)`
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Do: `alpha = sin(omega) / (2 * Q)`
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Do: `a0 = (1 - cs) / 2`
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Do: `a1 = 1 - cs`
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Do: `a2 = (1 - cs) / 2`
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Do: `b0 = 1 + alpha`
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Do: `b1 = -2 * cs`
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Do: `b2 = 1 - alpha`
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Filter: ON IIR Order 2 Coefficients `a0` `a1` `a2` `b0` `b1` `b2` |