Sounding-body driving circuit and operating sound generating apparatus using the same

1. Field of the Invention Upon receipt of a direction indication control signal s, a sounding-body driving circuit generates a driving signal sfor generating a flashing operation sound which is an artificial striking sound similar to a striking sound of a mechanical relay. The driving signal sis out...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Kitamura, Hajime, Fujinami, Naohiro, Omori, Katsuyoshi
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:1. Field of the Invention Upon receipt of a direction indication control signal s, a sounding-body driving circuit generates a driving signal sfor generating a flashing operation sound which is an artificial striking sound similar to a striking sound of a mechanical relay. The driving signal sis output to a speaker via an amplifier , and the flashing operation sound is outputted from the speaker , thereby obtaining the flashing operation sound which does not sound unusual to the driver. The sounding-body driving circuit enables a plurality of rectangular wave signals having the same amplitude and different frequencies to be synthesized in sequence of time by first and second synthetic signal generating circuits A and B to thus generate first and second synthetic signals sand sas artificial striking sounds.