Figure 7From: Efficient methods for joint estimation of multiple fundamental frequencies in music signals3D intensity representation (piano). Top: Ground-truth evolution of pitch along time for a piano piece. Bottom: 3D temporal representation of l ̃ ( c ′ ( t ) ) for the candidates of the winner combination at each frame. Most errors occur when there exist steep intensity transitions which mean that harmonics of a candidate were wrongly assigned to another candidateBack to article page