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Difference between revisions of "NVGate Virtual Input"
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==Virtual Inputs== | ==Virtual Inputs== | ||
The virtual inputs consist of an intermediate processing stage inserted between the front end and the analyses. Each inputs (or player tracks) can be drag& dropped to the virtual inputs plug-in. A virtual input (i.e. the result of calculation between inputs called'' Operators'') is generated as a standard input. It can be used in the following processes: | The virtual inputs consist of an intermediate processing stage inserted between the front end and the analyses. Each inputs (or player tracks) can be drag & dropped to the virtual inputs plug-in. A virtual input (i.e. the result of calculation between inputs called'' Operators'') is generated as a standard input. It can be used in the following processes: | ||
* Plug-in analyzers (FFTx, SOA,x, 1/n OCT, TDA, etc..) | * Plug-in analyzers (FFTx, SOA,x, 1/n OCT, TDA, etc..) | ||
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===Channel=== | ===Channel=== | ||
Each channel represents an operand for the operators. Each channel applies a polynomial | Each channel represents an operand for the operators. Each channel applies a polynomial to the input signal and a filtering. | ||
[[Image:Virtual_Inputs_02.png|framed|none]] | [[Image:Virtual_Inputs_02.png|framed|none]] | ||
* '''Source''': input source to be | * '''Source''': input source to be processed. It may come from the input Front-end or from the Player in the post analysis mode (see the post analysis chapter). | ||
* '''Input filter''': filter to be used for filtering the source before analysis. The Filters that are not compatible with the Front-end range cannot be selected (see the Filter builder chapter). The A and C weighting on time domain are available. | * '''Input filter''': filter to be used for filtering the source before analysis. The Filters that are not compatible with the Front-end range cannot be selected (see the Filter builder chapter). The A and C weighting on time domain are available. | ||
For filter characteristics, see the Appendix. | For filter characteristics, see the Appendix. | ||
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* '''Offset''': This value is added to each sample of the incoming signal (after applying the coef). Any real value (i.e: -1.5 E-3). The '''Offset''' is the B member in the following formula : (A*i<nowiki>+</nowiki>'''B''')<sup>P</sup> | * '''Offset''': This value is added to each sample of the incoming signal (after applying the coef). Any real value (i.e: -1.5 E-3). The '''Offset''' is the B member in the following formula : (A*i<nowiki>+</nowiki>'''B''')<sup>P</sup> | ||
* '''Power''': This value is used to power | * '''Power''': This value is used to power with each sample of the incoming signal (after applying the coef and the offset). | ||
[[Image:Virtual_Inputs_04.png|framed|none]] | [[Image:Virtual_Inputs_04.png|framed|none]] | ||
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[[Image:Virtual_Inputs_05.png|framed|none]] | [[Image:Virtual_Inputs_05.png|framed|none]] | ||
* '''Coef''': This value is multiplied with each sample of the | * '''Coef''': This value is multiplied with each sample of the outgoing signal. Any real value (i.e: -5.334). The '''Coef''' is the A member in the following formula : ('''A'''*''Op''<nowiki>+</nowiki>B)<sup>P</sup> | ||
* '''Offset''': This value is added to each sample of the | * '''Offset''': This value is added to each sample of the outgoing signal (after applying the coef). Any real value (i.e: -1.5 E-3). The '''Offset''' is the B member in the following formula : (A*''Op''<nowiki>+</nowiki>'''B''')<sup>P</sup> | ||
* '''Power''': This value is used to power each sample of the | * '''Power''': This value is used to power each sample of the outgoing signal (after applying the coef and the offset). | ||
[[Image:Virtual_Inputs_06.png|framed|none]] | [[Image:Virtual_Inputs_06.png|framed|none]] | ||
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[[File:Virtual_In3.png|Framed|none]] | [[File:Virtual_In3.png|Framed|none]] | ||
*On operator tab, you can create several | *On operator tab, you can create several operators and sum or multiply the channels selected, and apply a new equation. | ||
[[Image:Virtual_Inputs_05.png|framed|none]] | [[Image:Virtual_Inputs_05.png|framed|none]] | ||
[[File:virtual_input.png|framed|none]] | [[File:virtual_input.png|framed|none]] | ||
*Then a new channel "operator 1" | *Then a new channel "operator 1" appears on connect input, then you can use this channel like any other NVGate dynamical input. | ||
[[File:Virtual_In4.png|Framed|none]] | [[File:Virtual_In4.png|Framed|none]] | ||
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* '''Label''': Used to identify the results from the operator. The operator label is used in place of the input label. | * '''Label''': Used to identify the results from the operator. The operator label is used in place of the input label. | ||
* '''Physical quantity''': Define the output signal physical quantity. This setting is not automatic | * '''Physical quantity''': Define the output signal physical quantity. This setting is not automatic and must be set by the user. The software does not check the dimension equation of the generated signal. | ||
* '''Equation''': editor for the math formula to compute. The result of the last line of the editor is the signal generated by the operator. | * '''Equation''': editor for the math formula to compute. The result of the last line of the editor is the signal generated by the operator. | ||
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Parameter/constant names must start with a letter and may be ended by a number. The dot (.) is always the decimal separator independently from the OS preferences and the comma (,) is used as parameter separator. | Parameter/constant names must start with a letter and may be ended by a number. The dot (.) is always the decimal separator independently from the OS preferences and the comma (,) is used as parameter separator. | ||
The editor does not check the dimension of this result. The content of the formula can be copy/ | The editor does not check the dimension of this result. The content of the formula can be copy/pasted from any text editor. | ||
* '''Valid''': Indicates if the operator valid or not. To be valid an operator must process one of the virtual DC channel in its equation | * '''Valid''': Indicates if the operator is valid or not. To be valid an operator must process one of the virtual DC channel in its equation | ||
* '''Min output / Max output''': define the output range. These settings are expressed in the unit of the selected magnitude of the operator. | * '''Min output / Max output''': define the output range. These settings are expressed in the unit of the selected magnitude of the operator. | ||
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[[File:Virtual_DC7.png|framed|none]] | [[File:Virtual_DC7.png|framed|none]] | ||
A new track "operator 1" is now | A new track "operator 1" is now created and appears on channels connection. You can use it as any other DC input. | ||
[[File:virtual-dc.png|framed|none]] | [[File:virtual-dc.png|framed|none]] | ||