librosa.db_to_power¶
- librosa.db_to_power(S_db, *, ref=1.0)[source]¶
Convert a dB-scale spectrogram to a power spectrogram.
This effectively inverts
power_to_db:db_to_power(S_db) ~= ref * 10.0**(S_db / 10)
- Parameters
- S_dbnp.ndarray
dB-scaled spectrogram
- refnumber > 0
Reference power: output will be scaled by this value
- Returns
- Snp.ndarray
Power spectrogram
Notes
This function caches at level 30.