writer
12
edits
Difference between revisions of "RT60 Calculator"
Jump to navigation
Jump to search
m
no edit summary
AmberSmith (talk | contribs) m |
|||
| Line 1: | Line 1: | ||
[https://en.wikipedia.org/wiki/Reverberation Reverberation] in acoustics is the persistence of sound after a sound is produced. Reverberation, or reverb, is created when a sound or a signal is reflected causing a large number of reflections to build up and then decay as the sound is absorbed by the surfaces of objects in the space – which could include furniture, people, and air. | [https://en.wikipedia.org/wiki/Reverberation Reverberation] in acoustics is the persistence of sound after a sound is produced. Reverberation, or reverb, is created when a sound or a signal is reflected causing a large number of reflections to build up and then decay as the sound is absorbed by the surfaces of objects in the space – which could include furniture, people, and air. | ||
RT60 means <nowiki>'</nowiki>" Reverberation time - 60 dB". In other words, it means " | RT60 means <nowiki>'</nowiki>" Reverberation time - 60 dB". In other words, it means "how long a sound needs to decrease to 60 dB from it is initial energy level". | ||
RT60 Measurement is used to define the Reverberation Time of a room in order to qualify this one. | RT60 Measurement is used to define the Reverberation Time of a room in order to qualify this one. | ||
| Line 9: | Line 9: | ||
== | ==Introduction== | ||
===Download=== | ===Download=== | ||
Please contact [https://www.oros.com/find-us/ your local distributor] for | Please contact [https://www.oros.com/find-us/ your local distributor] for access to the RT60 package. | ||
===Package composition=== | ===Package composition=== | ||
* NVGate project folder | * NVGate project folder | ||
| Line 26: | Line 26: | ||
According to this method, the following plug-ins of NVGate are used: | According to this method, the following plug-ins of NVGate are used: | ||
* OCT plug-in | * OCT plug-in: to have the energy level by frequency band | ||
* Waterfall plug-in: to analyze the OCT profile | |||
* Waterfall plug-in | * Noise generator: you can use an OROS OR3X analyzer to generate a noise | ||
The corresponding NVGate project is already done. You can find it in the folder "RT60 NVGate Project". An example is also available below. | |||
* Noise generator | |||
The corresponding NVGate project is already done. You can find it in the folder "RT60 NVGate Project". | |||
Notes: This program is working with NVGate V11.00 and later. | Notes: This program is working with NVGate V11.00 and later. | ||
===Calculation=== | ===Calculation=== | ||
After the measurement, import the data | After the measurement, import the data into the excel sheet. This document combines each frequency band and automatically calculates the reverberation time. | ||
Please find in the folder "OROS RT60 Calculator" | Please find the mentioned excel sheet in the folder "OROS RT60 Calculator". A tutorial is also available below. | ||
---- | ---- | ||
| Line 46: | Line 43: | ||
<Youtube>https://www.youtube.com/watch?v=SCjREgHa20U</Youtube> | <Youtube>https://www.youtube.com/watch?v=SCjREgHa20U</Youtube> | ||
===Import the NVGate model into NVGate and perform the measurement=== | ===Import the NVGate model into NVGate and perform the measurement=== | ||
1- Copy the entire folder "RT60 third octave" and paste it into your NVGate model database. By default, the NVGate model database is located | 1- Copy the entire folder "RT60 third octave" and paste it into your NVGate model database. By default, the NVGate model database is located in: "C:\OROS\NVGate data\Workbook Library\User". | ||
2- Create a new project in NVGate | 2- Create a new project in NVGate. | ||
[[File:project_rt.png]] | [[File:project_rt.png]] | ||
3- Then, | 3- Then, select the "RT60 Model" in the next window and click on "load". | ||
[[File:model_rt60.png]] | [[File:model_rt60.png]] | ||
| Line 62: | Line 59: | ||
6- Your measurement is saved and located in the project manager. There, right click on the result of your measurement and select export. | 6- Your measurement is saved and located in the project manager. There, right click on the result of your measurement and select export. | ||
[[File:project_export.png]] | [[File:project_export.png]] | ||
7- Finally, export your result in a .txt format and open the OROS RT60 Calculator.xlsm | 7- Finally, export your result in a .txt format and open the "OROS RT60 Calculator.xlsm". | ||
==How to use the OROS RT60 Calculator== | ==How to use the OROS RT60 Calculator== | ||
| Line 74: | Line 72: | ||
2) Then, select the .txt file to import. | 2) Then, select the .txt file to import. | ||
3) Import the data of the other positions (same | 3) Import the data of the other positions (using the same procedure). | ||
4) In the "average level" tab, the average level of all the imported positions is automatically calculated. It is possible to deactivate a position in the settings tab: | 4) In the "average level" tab, the average level of all the imported positions is automatically calculated. It is possible to deactivate a position in the settings tab: | ||
| Line 92: | Line 90: | ||
[[Image:RT60_09.png|thumb|none|320px]] | [[Image:RT60_09.png|thumb|none|320px]] | ||
7) The report includes the RT60 values and the calculation mode (T20 / T30 / Manual ("m") for each third octave band, a graph and the global RT60 value. You can change the frequency band for the global RT60 computation (from… to…). | 7) The report includes the RT60 values and the calculation mode (T20 / T30 / Manual ("m")) for each third octave band, a graph and the global RT60 value. You can change the frequency band for the global RT60 computation (from… to…). | ||
[[Image:RT60_10.png|thumb|none|304px]] | [[Image:RT60_10.png|thumb|none|304px]] | ||