Inports
| |
In | Input In(k) |
Outports
| |
Out | Output Out(k) |
Mask Parameters | ||
Name | ID | Description |
characteristic | 1 | The filter characteristic is one of Butterworth (=Bessel) or Chebyshev |
fc1 | 2 | Lower cut-off frequency in Hz |
fc2 | 3 | Upper cut-off frequency in Hz |
rc | 4 | Attenuation at cut-off frequencies |
ts_fact | 5 | Multiplication factor of base sampling time (in integer format) |
Calculates the filter coefficients for a second order bandstop and performs filtering on input signal.
Second order transfer function used:
H(z) = (b0.z2 + b1.z + b2) / (z2 + a1.z + a2)
Butterworth
E.g.:
The cut-off frequencies are fc1 = 100Hz and fc2 = 300Hz.
The bodeplot is shown in the figure 1 below.
Chebyshev
Note: A second order Chebyshev I bandstop has the same bodeplot as a second order
Chebyshev II bandstop. Hence, only the ’Chebyshev’ option is given.
E.g.:
The cut-off frequencies are fc1 = 100Hz and fc2 = 300Hz.
The parameter rc is set to 10dB.
The bodeplot is shown in the figure 2 below.
Bessel
Note: A second order Bessel bandstop behaves exactly like a second order Butterworth
bandstop. Hence, no ’Bessel’ option is given.
FiP16 | 16 Bit Fixed Point Implementation |
FiP32 | 32 Bit Fixed Point Implementation |
Float32 | 32 Bit Floating Point Implementation |
Float64 | 64 Bit Floating Point Implementation |
16 Bit Fixed Point Implementation
Inports Data Type
| |
In | int16 |
Outports Data Type
| |
Out | int16 |
32 Bit Fixed Point Implementation
Inports Data Type
| |
In | int32 |
Outports Data Type
| |
Out | int32 |
32 Bit Floating Point Implementation
Inports Data Type
| |
In | float32 |
Outports Data Type
| |
Out | float32 |
64 Bit Floating Point Implementation
Inports Data Type
| |
In | float64 |
Outports Data Type
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Out | float64 |