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Table 2 Specifications and parameters for the rotor noise PSD estimation DAE and RPSL post-processing algorithm

From: Noise power spectral density scaled SNR response estimation with restricted range search for sound source localisation using unmanned aerial vehicles

STFT length (overlap shift) 2048 [46.4 ms] (1024 [23.2 ms])
Forgetting factorλ 0.3
Dimension of each frame 1 ×1024 (TDAE×F)
Training dataset
Total no. of frames (from hovering UAV dataset) 417,180 [9687 s]
Total no. of frames (from flying UAV dataset, broadband) 4675 [108.6 s]
Total no. of frames (from flying UAV dataset, speech) 9435 [219.1 s]
Learning rate 5 ×10−5
No. of epochs 2000
Testing dataset
Total no. of frames (from hovering UAV dataset) 39,182 [920.1 s]
Total no. of frames (from flying UAV dataset, broadband) 3420 [80 s]
Total no. of frames (from flying UAV dataset, speech) 2736 [64 s]
RPSL parameters
\(\Delta \vec {\theta }_{\text {res}}\) (deg) 50 (task 2), 35 (task 3)
\