
MFE parameters overview
Feature output format
The “Processed features” array has the following format:- Column major, from low frequency to high.
- Number of rows will be equal to the filter number
- Each column represents a single frame
Audio MFE parameters
Compatible with the DSP AutotunerPicking the right parameters for DSP algorithms can be difficult. It often requires a lot of experience and experimenting. The autotuning function makes this process easier by looking at the entire dataset and recommending a set of parameters that is tuned for your dataset.
- Frame length: The length of each frame in seconds
- Frame stride: The step between successive frame in seconds
- Filter number: The number of triangular filters applied to the spectrogram
- FFT length: The FFT size
- Low frequency: Lowest band edge of Mel-scale filterbanks
- High frequency: Highest band edge of Mel-scale filterbanks
- Noise floor (dB): signal lower than this level will be dropped