8,877
edits
Difference between revisions of "NVGate Octave Analyzer"
Jump to navigation
Jump to search
→CPB filters
| Line 444: | Line 444: | ||
* '''Upper central freq'''[[Image:Reports_Tools_Ribbons_404.png]]: the central frequency of the upper band of the frequency range. The bands considered are octave bands (for the octave mode) and 1/3 octave bands (for the other modes). | * '''Upper central freq'''[[Image:Reports_Tools_Ribbons_404.png]]: the central frequency of the upper band of the frequency range. The bands considered are octave bands (for the octave mode) and 1/3 octave bands (for the other modes). | ||
The user enters a value, which is adjusted to the closest central frequency. The bandwidth between Lower and Upper central frequency must be lower than or equal to eleven filters (considering octave bands) and 31 filters (considering 1/3 octave bands). So, if this bandwidth increases, then the Lower central frequency is automatically increased. | The user enters a value, which is adjusted to the closest central frequency. The bandwidth between Lower and Upper central frequency must be lower than or equal to eleven filters (considering octave bands) and 31 filters (considering 1/3 octave bands). So, if this bandwidth increases, then the Lower central frequency is automatically increased. | ||
* For having the last band compatible with the Class #1 standard, the front end sampling frequency need to cover the full band. Exemple: for having Class #1 compatible for 1/3 octave 20kHz the sampling frequency need to be 65,536kS/s. If you let the sampling frequency at 51.2kS/s (20kHz bandwith) you will be Class #2 standards. | |||
* '''Mode[[Image:Reports_Tools_Ribbons_407.png]]:''' | * '''Mode[[Image:Reports_Tools_Ribbons_407.png]]:''' | ||