The frequency of the resultant audio signal from the tone generator is a function of an increment number by which the memory containing the waveform information is indexed. The initializing parameters are transferred from each established oscillator to an associated tone engine for generating the tone whereafter the initiating parameters are transferred from each established oscillator to the associated tone engine. Upon determining the rank associated with the selected note, establishing an oscillator for each such determined rank wherein the oscillator includes initializing parameters and initiating parameters for defining a tone of the selected note and the associated rank. The method of the present invention includes receiving a signal representative of a selected note and monitoring a set of available ranks to determine which of the available ranks are associated with the selected note. The tone engines are coupled to each oscillator wherein the initializing parameters are transferred from each oscillator to an associated one of the plurality of tone engines and then the initiating parameters are simultaneously transferred from each oscillator to the associated tone engine. The apparatus also includes a plurality of tone engines for generating tones. The apparatus further includes an oscillator which is established for each rank determined to be associated with the selected note such that each oscillator includes initializing parameters and initiating parameters which define the selected note and the associated rank. The apparatus includes a microprocessor having an input for receiving a signal representative of a selected note whereupon receipt of the signal, the microprocessor checks a set of available ranks to determine which of the available ranks is associated with the selected note. The present invention provides an apparatus and method for phase synchronizing tones in an electronic musical instrument. G10H1/183- Channel-assigning means for polyphonic instruments.G10H1/00- Details of electrophonic musical instruments.computer organs using a common processing for different operations or calculations, and a set of microinstructions (programme) to control the sequence thereof G10H7/002- Instruments in which the tones are synthesised from a data store, e.g.G10H7/00- Instruments in which the tones are synthesised from a data store, e.g.G10H- ELECTROPHONIC MUSICAL INSTRUMENTS INSTRUMENTS IN WHICH THE TONES ARE GENERATED BY ELECTROMECHANICAL MEANS OR ELECTRONIC GENERATORS, OR IN WHICH THE TONES ARE SYNTHESISED FROM A DATA STORE.Assignors: ALLEN ORGAN COMPANY Anticipated expiration legal-status Critical Status Expired - Fee Related legal-status Critical Current Links ![]() Priority to JP00276799A priority patent/JP3283841B2/en Application granted granted Critical Publication of US5945620A publication Critical patent/US5945620A/en Assigned to MUSICCO, LLC reassignment MUSICCO, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Allen Organ Co filed Critical Allen Organ Co Priority to US09/039,966 priority Critical patent/US5945620A/en Assigned to ALLEN ORGAN COMPANY reassignment ALLEN ORGAN COMPANY ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). ![]() Original Assignee Allen Organ Co Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) Adamson Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Expired - Fee Related Application number US09/039,966 Inventor John P. Google Patents Digital tone generator for producing phase synchronized tonesÄownload PDF Info Publication number US5945620A US5945620A US09/039,966 US3996698A US5945620A US 5945620 A US5945620 A US 5945620A US 3996698 A US3996698 A US 3996698A US 5945620 A US5945620 A US 5945620A Authority US United States Prior art keywords tone oscillator parameters rank selected note Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US5945620A - Digital tone generator for producing phase synchronized tones ![]() US5945620A - Digital tone generator for producing phase synchronized tones
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