librosa.db_to_amplitude¶
- librosa.db_to_amplitude(S_db, *, ref=1.0)[source]¶
Convert a dB-scaled spectrogram to an amplitude spectrogram.
This effectively inverts
amplitude_to_db:db_to_amplitude(S_db) ~= 10.0**(0.5 * (S_db + log10(ref)/10))
- Parameters
- S_dbnp.ndarray
dB-scaled spectrogram
- refnumber > 0
Optional reference power.
- Returns
- Snp.ndarray
Linear magnitude spectrogram
Notes
This function caches at level 30.