Apparatus and methods for the harmonic enhancement of...

H - Electricity – 03 – G

Patent

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H03G 5/00 (2006.01)

Patent

CA 2262736

The present invention is a method and apparatus for simply and inexpensively enhancing an electronic audio signal in such a way that the quality of audible sound produced from the audio signal more closely approaches that of the original sound heard live in an acoustically designed environment. The present invention restores the perception of harmonics that are normally missing in an electronic audio signal. The apparatus includes a circuit (8) that causes an input audio signal to be distorted such that an enhanced audio signal (31) is produced that exhibits an improved harmonic quality compared to that of the original input audio signal. This distortion is a non-linear amplification (33) of enhancing harmonics or frequencies in the input audio signal. That is, a band of desirable harmonics or frequencies in the input audio signal are non- uniformly amplified across the band.

L'invention porte sur un procédé et un appareil destinés à améliorer de façon simple et à faible coût un signal sonore électronique de sorte que la qualité du son audible produit par le signal sonore s'approche davantage du son original entendu en direct dans un environnement acoustique. L'invention rétablit la perception d'harmonies qui sont normalement absentes d'un signal sonore électronique. L'appareil comprend un circuit (8) qui déforme un signal sonore d'entrée de sorte que le signal sonore (31) amélioré produit fait preuve d'une qualité harmonique améliorée par rapport à celle du signal sonore d'entrée original. Cette distorsion est une amplification non linéaire (33) d'harmonies ou de fréquences d'amélioration, présentes dans le signal sonore d'entrée: une gamme d'harmonies ou de fréquences souhaitées, présente dans le signal sonore d'entrée, est amplifiée non uniformément sur toute la bande.

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