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Method for Specifying the Lengths of Notes in the Input of a Melody

IP.com Disclosure Number: IPCOM000114777D
Original Publication Date: 1995-Jan-01
Included in the Prior Art Database: 2005-Mar-29
Document File: 4 page(s) / 81K

Publishing Venue

IBM

Related People

Hirose, S: AUTHOR

Abstract

Disclosed is a method for inputting a melody through an image of a music sheet on a display device with a pointing device. This method allows the user to specify the lengths of notes by only arranging them horizontally in a measure, which can be done very easily while specifying the pitches. No extra moves of the pointer for selections from the length menu are required.

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This is the abbreviated version, containing approximately 52% of the total text.

Method for Specifying the Lengths of Notes in the Input of a Melody

      Disclosed is a method for inputting a melody through an image
of a music sheet on a display device with a pointing device.  This
method allows the user to specify the lengths of notes by only
arranging them horizontally in a measure, which can be done very
easily while specifying the pitches.  No extra moves of the pointer
for selections from the length menu are required.

      The system has three parameters, namely, Left Margin Ratio
(LMR), Right Margin Ratio (RMR), and resolution (RES).  The margin
ratio parameters determine the relative widths of the left- and
rightmost portions of the measure that are left for margins.  The
resolution parameter is the length of the measure divided by the
minimum length of the notes to be input.  For example, a measure in
four-four time and eighth notes make RES = (4/4) / (1/8) = 8.

      Given a measure and the parameter values, the system first
divide the measure into several sections as follows (Fig. 1):
  1.  Let BL and BR be the x-coordinate values of the left and right
       bars respectively.
  2.  The area from BL to BL+(BR-BL)*LMR is reserved for the left
       margin.  Similarly, the right margin takes the area from
       BR-(BR-BL)*RMR to BR.
  3.  The rest of the measure is divided into the same number of
       sections as the resolution parameter.  Thus the width of an
       internal section is (BR-BL)*(1-LMR-RMR)/RES.

      Next, the system waits for the user to make p...