Hypex Filter Design - troelsgravesen.dk · Hypex Filter Design v4.4 Pagina 20 van 29 Step response...
Transcript of Hypex Filter Design - troelsgravesen.dk · Hypex Filter Design v4.4 Pagina 20 van 29 Step response...
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Hypex Filter Design v4.4 Pagina 1 van 29
Hypex Filter Design
Contents General info ............................................................................................................................................. 3
Options .................................................................................................................................................... 3
General functions ................................................................................................................................ 3
Volume control .................................................................................................................................... 3
Mute .................................................................................................................................................... 3
Channel assignment ............................................................................................................................ 4
Subout Control .................................................................................................................................... 4
Load measurements for speaker ......................................................................................................... 4
View sum of filters ............................................................................................................................... 4
Delay .................................................................................................................................................... 4
Biquad filters ....................................................................................................................................... 4
Input gain adapt (only AS2.100/DLCP) ................................................................................................ 4
Getting started ........................................................................................................................................ 5
Master ................................................................................................................................................. 5
Slave .................................................................................................................................................... 5
Final setup ........................................................................................................................................... 5
Ready! .................................................................................................................................................. 6
Main screen ............................................................................................................................................. 7
Device info ........................................................................................................................................... 7
Supported modules ......................................................................................................................... 7
Firmware update ................................................................................................................................. 7
Quick settings ...................................................................................................................................... 8
Filter design ............................................................................................................................................. 9
Menu bar ............................................................................................................................................. 9
File-menu ......................................................................................................................................... 9
Tools menu .................................................................................................................................... 10
Load filter to DSP menu ................................................................................................................. 10
PRESET menu ................................................................................................................................. 11
Advanced filterdesign screen ............................................................................................................ 11
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Channel submenu .......................................................................................................................... 11
Biquad sub-menu .......................................................................................................................... 12
Graphical filterdesign screen ............................................................................................................. 13
Designing Filters ............................................................................................................................ 13
Biquad filter types ......................................................................................................................... 13
Graph header ................................................................................................................................. 15
Graph left pane .............................................................................................................................. 15
Graph right pane (filter graph) ...................................................................................................... 15
Graph bottom pane ....................................................................................................................... 15
Filterobjects ................................................................................................................................... 16
Adding a filterobject ...................................................................................................................... 17
Disable or delete filterobjects ....................................................................................................... 18
Impulse response graph ................................................................................................................ 19
Step response graph ...................................................................................................................... 20
Filter design examples ....................................................................................................................... 20
Butterworth ................................................................................................................................... 20
Bessel filter .................................................................................................................................... 23
Recording ........................................................................................................................................... 25
FAQ ........................................................................................................................................................ 26
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Hypex Filter Design v4.4 Pagina 3 van 29
General info
Options
General functions
Volume control
Mute
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Hypex Filter Design v4.4 Pagina 4 van 29
Channel assignment
Subout Control
Load measurements for speaker
View sum of filters
Delay
Biquad filters
Input gain adapt (only AS2.100/DLCP)
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Hypex Filter Design v4.4 Pagina 5 van 29
Getting started
Master
Slave
Final setup
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Hypex Filter Design v4.4 Pagina 6 van 29
Ready!
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Main screen
Picture 1: Main screen
Device info
Supported modules
Firmware update
Picture 2: Firmware version of attached device
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Quick settings
Picture 3: Device is muted
Picture 4: Selecting a preset
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Filter design
Menu bar
File-menu
Picture 5: File menu
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Tools menu
Picture 6: Tools menu
Picture 7: Set Asio preferences
Load filter to DSP menu
Picture 8: Load filter to DSP menu
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PRESET menu
Picture 9: Preset menu
Advanced filterdesign screen
Picture 10: Advanced screen overview
Channel submenu
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Picture 11: Right click on the channel box
Biquad sub-menu
Picture 12: Right click on one of two selected biquads
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Graphical filterdesign screen
Picture 13: Graphical filterdesign screen
Designing Filters
Biquad filter types
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Hypex Filter Design v4.4 Pagina 14 van 29
Table 1: Biquad filter types
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Graph header
Graph left pane
Graph right pane (filter graph)
Graph bottom pane
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Filterobjects
Picture 14: Filtergraph
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Adding a filterobject
Picture 15: Select a channel in the graphic screen
Picture 16: Add a filterobject
Picture 17: Select the filterobject function
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Picture 18: Filterobject curve
Disable or delete filterobjects
Picture 19: Disable or delete a filterobject
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Impulse response graph
Picture 20: Impulseresponse graph
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Step response graph
Picture 21: Stepresponse graph
Filter design examples
Butterworth
Order Q first biquad Q second biquad Q third biquad
2 0.71
3 1st order filter, no Q 1.0
4 0.54 1.31
5 1st order filter, no Q 0.62 1.62
6 0.52 0.71 1.93 Table 2: Butterworth coefficients
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Hypex Filter Design v4.4 Pagina 21 van 29
Third order lowpass Butterworth example (Fc=1000Hz)
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Fourth order lowpass Butterworth example (Fc=1000Hz)
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Fifth order lowpass Butterworth example (Fc=1000Hz)
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Sixth order lowpass Butterworth example (Fc=1000Hz)
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Hypex Filter Design v4.4 Pagina 23 van 29
Bessel filter
Order Q first biquad First frequency factor
Q second biquad
Second frequency factor
Q third biquad
Third frequency factor
2 0.58 1.27x
3 1st order filter, no Q
1.32x 0.69 1.45x
4 0.81 1.60x 0.52 1.43x
5 1st order filter, no Q
1.50x 0.92 1.76x 0.56 1.56x
6 1.02 1.90x 0.61 1.69x 0.51 1.60x Table 3: Besselfilter coefficients
Biquad Cutoff frequency Q-factor
1 1.6x1000=1600Hz 0.81
2 1.43x1000=1430Hz 0.52 Table 4: Example 4th order Bessel filter Fc=1000Hz
Biquad Cutoff frequency Q-factor
1 1.9x1000=1900Hz 1.02
2 1.69x1000=1690Hz 0.61
3 1.6x1000=1600Hz 0.51 Table 5: Example 6th order Bessel filter Fc=1000Hz
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Hypex Filter Design v4.4 Pagina 24 van 29
Fourth order lowpass Bessel example (Fc=1000Hz)
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Sixth order lowpass Bessel example (Fc=1000Hz)
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Hypex Filter Design v4.4 Pagina 25 van 29
Recording
Picture 22: Enable recording button
Picture 23: Change sweep output gain
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Hypex Filter Design v4.4 Pagina 26 van 29
FAQ
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