ISO3382 Impulse Method
Description#
The ISO3382 Impulse Method block determines the reverberation time based on calculations from ISO 3382-2:2008
Measurement of room acoustic parameters — Part 2: Reverberation time in ordinary rooms.
The reverberation time is calculated based on the impulse method where an impulse e.g a clap, balloon, gun is used, or an impulse generated using a sine sweep is used. The impulse is converted to a decay curve where a linear fit is found and the reverberation time T60, T30, or T20 is calculated.
Input#
Impulse [P,pos1] is the impulse response that is M samples long, in a single position repeated 1 to N times.
Multiple inputs will be ensemble average together.
Output#
Reverberation times is the calculated reverberation times in F bands. Default one band pr octave from 100 Hz to 4000 Hz.
Attributes#
| Attribute | Value |
|---|---|
| Name | ISO3382ImpulseMethod |
| Mode | T30 |
| Bands pr. octave | ☐ 1 |
| Start frequency | ☐ 100 |
| Stop frequency | ☐ 4000 |
| Inputs | 2 |
Values with ☐ can receive external input.
Name#
Name specifies the name of the block.
Mode#
Mode specifies which type of reverberation time you want to calculate. You can choose between T60, T30, or T20.
Bands pr. octave#
Bands pr. octave species the number of bands you want to output pr octave.
Start frequency#
Start frequency specifies the frequency which should be in the first band.
Stop frequency#
Stop frequency specifies the frequency which should be in the last band.
Inputs#
Inputs specifies the number of inputs the block requires. A single measurement position is needed. As inputs is increases you increase the number of measurement positions that are used.