| |
QEDesign-Lite
Basic Filter Design System |
QEDesign-1000
Sophisticated System with Extended Features |
QEDesign-2000
Premier Filter Design System |
| Supported Operating Systems |
| Windows 3.1 |
No |
Yes |
No |
| Windows 95/NT |
Yes |
Yes |
Yes |
| UNIX |
No |
No |
Yes |
| Supported Filter Types |
| Lowpass |
Yes |
Yes |
Yes |
| Highpass |
Yes |
Yes |
Yes |
| Bandpass |
Yes |
Yes |
Yes |
| Bandstop |
Yes |
Yes |
Yes |
| Differentiator |
No |
Yes |
Yes |
| Multiband |
No |
Yes |
Yes |
| Hilbert Transformer |
No |
Yes |
Yes |
| Arbitrary Magnitude (FIR) |
No |
Yes |
Yes |
| Halfband |
No |
Yes |
Yes |
| Raised Cosine |
No |
Yes |
Yes |
| Root Raised Cosine |
No |
Yes |
Yes |
| Arbitrary Group Delay |
No |
Yes |
Yes |
| Maximum Filter Order |
| IIR |
6/12
(Windows 95/NT) |
80 |
160 |
| FIR with windows |
128 |
3072 |
8192 |
| Equiripple FIR |
128 |
1380 |
8192 |
| IIR Analog Prototypes |
| Butterworth |
Yes |
Yes |
Yes |
| Tschebyscheff |
Yes |
Yes |
Yes |
| Inverse Tschebyscheff |
Yes |
Yes |
Yes |
| Elliptic |
Yes |
Yes |
Yes |
| Bessel |
Yes |
Yes |
Yes |
| Digital Transformation Methods |
| Bilinear |
Yes |
Yes |
Yes |
| Impulse Invariant |
No |
Yes |
Yes |
| Matched Z-Transform |
No |
No |
Yes |
| IIR Realization Methods for bilinear and matched z-transform designs |
| Cascade |
Yes |
Yes |
Yes |
| Parallel |
No |
No |
Yes |
| Ratio of polynomials |
No |
No |
Yes |
| FIR Window Functions |
| Rectangular |
Yes |
Yes |
Yes |
| Triangular |
Yes |
Yes |
Yes |
| Hanning |
Yes |
Yes |
Yes |
| Hamming |
Yes |
Yes |
Yes |
| Blackman |
Yes |
Yes |
Yes |
| Kaiser |
Yes |
Yes |
Yes |
| Exact Blackman |
No |
Yes |
Yes |
| 3 Term Cosine |
No |
Yes |
Yes |
| 3 Term Cosine with continuous 3rd Derivative |
No |
Yes |
Yes |
| Minimum 3 Term Cosine |
No |
Yes |
Yes |
| 4 Term Cosine |
No |
Yes |
Yes |
| 4 Term Cosine with continuous 5th Derivative |
No |
Yes |
Yes |
| Minimum 4 Term Cosine |
No |
Yes |
Yes |
| Good 4 Term Blackman Harris |
No |
Yes |
Yes |
| Harris Flat Top |
No |
Yes |
Yes |
| Dolph-Tschebyscheff |
No |
Yes |
Yes |
| Taylor |
No |
Yes |
Yes |
| Gaussian |
No |
Yes |
Yes |
| System Analysis |
| Z-Domain transfer function |
Yes |
Yes |
Yes |
| S-Domain transfer function |
Yes |
Yes |
Yes |
| Compensation Features |
| D to A conversion |
No |
Yes |
Yes |
| Comb Filter Compensation |
No |
Yes |
Yes |
| Phase Equalization |
No |
Yes |
Yes |
| Plot Options |
| Magnitude |
Yes |
Yes |
Yes |
| Log Magnitude |
Yes |
Yes |
Yes |
| Poles and Zeros |
Yes |
Yes |
Yes |
| Phase |
Yes |
Yes |
Yes |
| Group Delay |
Yes |
Yes |
Yes |
| Impulse Response |
Yes |
Yes |
Yes |
| Step Response |
No |
Yes |
Yes |
| Logarithmic Frequency Scale |
No |
Yes |
Yes |
| Miscellaneous |
| Graphical Placement of Poles and Zeros with simultaneous display of system response |
No |
No |
Yes |
| Quad Precision Calculations for critical designs |
No |
No |
Yes |
