Performance evaluator for use in a karaoke apparatus
Patent 5557056 Issued on September 17, 1996. Estimated Expiration Date: 
September 22, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
September 22, 2014. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesMusical performance unit Vocal display device Karaoke music selection device System for marking a singing voice and displaying a marked result for a karaoke machine Score evaluation display device for an electronic song accompaniment apparatus Patent #: 5434949 InventorsAssigneeApplicationNo. 310442 filed on 09/22/1994US Classes:84/610, Accompaniment84/477R, Indicators84/634, Accompaniment434/307AKaraokeExaminersPrimary: Witkowski, Stanley J.Attorney, Agent or FirmInternational ClassesG09B 015/02G10H 001/36 Foreign Application Priority Data1993-09-23 KRAbstractA karaoke apparatus evaluates a singer's performance by employing: a microphone for converting the singer's voice into a electrical voice signal; a first analogue to digital (A/D) converter for converting the electrical voice signal into a digitized voice signal; a audiovisual equipment for producing the accompanying music; a second A/D converter for digitizing the accompanying music to produce a digitized accompaniment signal; and a performance evaluator for measuring the difference between the accompanying music and the corresponding karaoke singer's voice to produce a score for the karaoke singer's singing performance. | |
