Takuya Nakata

Musical score duration modification apparatus

An automatic performance apparatus that can change the performance speed of desired sections in a piece of music automatically performed. The apparatus comprises a section designator for designating a specific section in the piece, a time evaluator for counting performance duration of the piece, a modifier for modifying either the duration of the specific section (or the duration of a section other than the specific section) by modifying the tempo of the automatic performance or duration of notes of the performance data so that the performance duration of the automatic performance becomes equal to the desired duration. Thus, the total duration of the piece is adjusted to the desired duration while maintaining the duration of the specified section (or the duration of the sections other than the specified section).

Electronic musical instrument with classified registration of timbre variations

A timbre information registration apparatus registers timbre variations which have different instrumental attributes and different modification degrees such that the registered timbre variations are selectively applied to instrument sounds synthesized by an electronic musical instrument. A memory has a matrix of memory locations arranged in rows and columns and assigned to individually register the timbre variations such that one timbre variation is selected by a row address and a column address. The individual timbre variations are categorized into a plurality of instrument kinds such that one instrument kind contains certain timbre variations having a common instrumental attribute. The individual timbre variations are also categorized into a plurality of version groups such that one version group contains certain timbre variations of the same modification degree. The column addresses are assigned to the respective instrument kinds such that the certain timbre variations belonging to one instrument kind are registered at the memory locations of one column. The row addresses are divided into a plurality of sections in correspondence to the plurality of the version groups such that the certain timbre variations belonging to one version group are registered at the memory locations specified by the row addresses of one section.