High speed narrow band linear phase bandpass filter.
Use the component to apply a narrow band linear phase bandpass filter. Bandpass filters which would otherwise require 10 000 or 100 000 taps long impulse responses, can be applied at a small fraction of the processing cost. When the filter pass band width, is less than 25% of the total signal bandwidth it becomes meaningfull to use this component. For bandpass widths of less than 1%, the processing requires 10-100x less CPU than direct filter methods.
| Name | Type | Description |
|---|
| Active | bool | Set active to false to suppress the propagation of the Pull request and the subsequent call to the Update method. |
| AudioSignal | bool | Enable when the signal processed is Audio signal. |
| BandWidth | double | Return the bandwidth of the signal. |
| BandwidthH | double | Returns the upper bandwidth edge of the signal. |
| BandwidthL | double | Returns the lower bandwidth edge of the signal. |
| BlockAssign | bool | Block streaming of specific properties when storing only a "template". |
| ChannelCount | int | Get or set the number of channels multiplexed in the data property. |
| Complex | bool | Set this property to true, to request computation using complex numbers. |
| Continuous | bool | If True, the component will pass on the udpate request to the connected component. |
| Data | TVec* | Stores the result of the processing. |
| Dt | double | Time between two consecutive samples. |
| EditorActive | bool | Returns True, if the component editor is displayed. |
| Factor | double | Factor by which to change the sampling frequency of the signal connected to the Input property. |
| FilterDelay | double | Returns the filter delay in number of samples of the final sampling frequency. |
| FloatPrecision | TMtxFloatPrecision | Set this property to request computation in 32bit/64bit precision with real/complex numbers. |
| FloatPrecisionLock | bool | Set this property to true to lock changes to FloatPrecision property. |
| HalfBand | bool | The bandwidth will be halved during downsampling. |
| HzRes | double | Frequency resolution obtained, if an FFT algorithm would be run on the data. |
| Input | TSignal* | |
| Inputs | TSignalCollection* | |
| IsDouble | bool | Set this property to false, to request computation in 32bit floating point precision, 64bit, if true. |
| ItemNumber | int | Number to label the object when it is an item in the List. |
| Length | int | Get or set the length of the signal in samples. |
| Marks | TMarkList* | Stores the time stamps and amplitude of selected samples. |
| MaxAmplt | double | Stores the maximum amplitude of the signal found by the MinMax method. |
| MaxX | double | Use the MaxX property to store the time stamp (in seconds) of the right most sample. |
| MinAmplt | double | Stores the minimum amplitude of the signal found by the MinMax method. |
| MinX | double | Use the MinX property to store the time stamp of the left-most sample. |
| MultiChannel | bool | Set MultiChannel to True, if Inputs property will be published, and Input property will remain hidden. |
| Name | DewString | |
| OnAfterUpdate | tNotifyEvent | The event is triggered after the call to the Update method. |
| OnBeforeUpdate | tNotifyEvent | The event is triggered just before the call to the Update method. |
| OnDisplayUpdate | tNotifyEvent | The event is triggered after the OnAfterUpdate event. Use this event to update any associated charts or graphs or result tables. |
| OnGetInput | tNotifyEvent | If the Input property is not assigned, the component will call OnGetInput. |
| OnNotifyUpdate | tNotifyEvent | The event is called after a call to InternalUpdate, OnAfterUpdate and OnDisplayUpdate from within the Update method. |
| OnParameterUpdate | tNotifyEvent | The event is triggered when ParamUpdate method is called. The ParamUpdate method is usually called by component editors when a value was changed by the user and the editor was "Live". |
| PipeDirty | bool | |
| PipeState | TPipeState | Returns the state of the pipe after the last update. |
| Reference | TReferenceList* | Stores a list of components that have to be notified, when this component is destroyed. |
| Ripple | double | Defines the ripple of the passband and of the stopband of the FIR lowpass filter used for interpolation. |
| SamplingFrequency | double | Defines the sampling frequency of the signal. |
| SamplingTime | double | The length of the signal in seconds. |
| ScaleFactor | double | Additional scaling factor which is applied without extra performance cost. |
| SubBandFrequency | double | Defines the starting frequency of the frequency band to be extracted. |
| SubBandWidth | double | Defines the width of the frequency band to be demodulated. |
| SuspendNotifyUpdate | bool | Set this property to True, to prevent calling OnNotifyUpdate from the Update Method. |
| TransBW | double | Defines the width of the transition band of the FIR filter used for interpolation/decimation. |
| UsesInputs | bool | Set it to True to indicate, that valid signals will be connected to the Input or Inputs properties. |