SYSTEM AND METHOD FOR ACTIVE SOUND INFLUENCING

The invention relates to a system for influencing sound in an active manner, having a sound generator (20), an error sensor (50), a regulator (92), an adder (94), and a weigher (95). The sound generator (20) is designed to generate sound when an audio signal is applied and to overlay the sound with...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: BUGANZA, Federico, KOCH, Viktor
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:The invention relates to a system for influencing sound in an active manner, having a sound generator (20), an error sensor (50), a regulator (92), an adder (94), and a weigher (95). The sound generator (20) is designed to generate sound when an audio signal is applied and to overlay the sound with a sound to be manipulated. The error sensor (50) measures the overlaid sound which results from overlaying the sound generated by the sound generator (20) with the sound to be manipulated and outputs a corresponding feedback signal (e'(n)). The sound generator (91) generates a sound signal (y(n)) and outputs same. The regulator (92) is designed to generate a first regulating signal (λ1(n)) and a second regulating signal (λ2(n)). The adder (94) subtracts the second regulating signal (λ2(n)) from the feedback signal (e'(n)) and outputs the modified feedback signal (e(n)) obtained in this manner to the signal generator (91). The weigher (95) weighs the sound signal (y(n)) output by the sound generator (91) with the first regulating signal (λ1(n)) generated by the regulator (92) and outputs the sound signal (y'(n)) weighted in this manner in order to generate the audio signal. The signal generator (91) is designed to generate the sound signal (y(n)) on the basis of the modified feedback signal (e(n)), and the regulator (92) is designed to generate the first and second regulating signal (λ1(n), λ2(n)) such that the sum of the amplitudes of the feedback signal (||e'(n)||) corresponds to a specifiable value (Δ). The invention further relates to a motor vehicle comprising said system and to a corresponding method.