Roland Corporation

Kenji Nogami

John K McFerran

Junichi Miki

Takahiro Sugizaki

Kouji Ooe

Hiroshi Ishizaki

Shigeru Yoshida

Provided is a tone control device coupled to a musical instrument including a plurality of pipes capable of generating tones with differing pitches for keys, wherein the pipes are arranged in rows, comprising: a tone generation device that generates tone; a pipe designation device that designates a specified pipe among the pipes installed; and a control device that causes the tone generation device to generate a substituting tone corresponding to the specified pipe when a depressed key comprising one of the keys corresponds to the specified pipe designated by the pipe designation device, and the specified pipe is a pipe belonging to one of the rows of pipes designated as a tone generation subject for the depressed key.

Tone control device

The invention presents a rendition control apparatus that not only reduces processing so that processing is neither complicated nor complex, but also reduces the used storage region. The rendition control apparatus allows for differences in the timing over the passage of time when reproducing and rendering a continuous sound waveform, and renders sound waveforms naturally and with good rhythm, while making it possible to change the reproduction tempo freely. The rendition control apparatus includes a waveform data storage means for storing waveform data rendered at a certain tempo; a reproduction tempo information production means for producing reproduction tempo information indicating a reproduction tempo; a time-axis compression/expansion processing means for compressing/expanding and reproducing the waveform data stored in said waveform data storage means in real-time on the time axis, based on reproduction tempo information produced by said reproduction tempo information production means; a control signal production means for producing a control signal for modulating periodically with the passage of time the reproduction with the time-axis compression/expansion processing means, based on the reproduction tempo information. Reproduction tempo information produced by said reproduction tempo information production means are entered into said control signal production means, and said control signal production means produces, as the control signal, a periodical signal whose period corresponds to the entered reproduction tempo information.

System and method for rendition control

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Hamamatsu, Japan

Kenji Nogami