The LevelMonitor can be used to measure level of audio samples based on different weighting curves.
In GTT, the LM exposes the following parameters for each channel
- Level mode (0 == RMS, 1 == Linear, 2 == Peak)
- Frequency weighting (0 == A-weighting, 1 == custom, 2 == no freq weighting)
- Time weighting ( 0 == slow, 1 == fast, 2 == custom)
- Db leak per sec
- Peak hold time
For custom modes the coefficients can be set manually by the user in the following order:
- b0 coefficient of freq weighting
- b1 coefficient of freq weighting
- b2 coefficient of freq weighting
- a1 coefficient of freq weighting
- a2 coefficient of freq weighting
- b0 coefficient of time weighting
- b1 coefficient of time weighting
- b2 coefficient of time weighting
- a1 coefficient of time weighting
- a2 coefficient of time weighting
The output of the measurement is stored in the states and can be read out by GTT. The real time GUI within GTT can plot the level value in real time.