alexanderlerch

dataset	meta data	contents	with audio
200DrumMachines		7371 one-shots	yes
AAM	onsets, pitches, instruments, melody instrument, keys, chords, tempo, beats	3000 (artificial) tracks	yes
ACM_MIRUM	tempo	1410 excerpts (60s)	yes
ACPAS	aligned audio and scores	2189 performances of 497 scores	downloadable
AcousticBrainz-Genre	15-31 genres with 265-745 subgenres	audio features for over 2000000 songs	no

gocarlos

// A simple quickref for Eigen. Add anything that's missing.
// Main author: Keir Mierle

#include <Eigen/Dense>

Matrix<double, 3, 3> A;               // Fixed rows and cols. Same as Matrix3d.
Matrix<double, 3, Dynamic> B;         // Fixed rows, dynamic cols.
Matrix<double, Dynamic, Dynamic> C;   // Full dynamic. Same as MatrixXd.
Matrix<double, 3, 3, RowMajor> E;     // Row major; default is column-major.
Matrix3f P, Q, R;                     // 3x3 float matrix.