Music bar code manual#
Music bar code code#

In the chord section, each nybble pair in the data encodes a chord for one or two chord steps.ДЄs explained in the manuals, the chord positions are fixed at the first and third beat of every measure. When two successive notes have the same pitch, a short rest is typically stored between them so that the keyboard key LED will turn off for a noticeable time. Other events (accompaniment start, return 1, return 2) have zero durations. Fortunately, beat, half-beat, and third-beat multiples never fall on the invalid values, and quarter-beat multiples only occasionally fall on the invalid values.Д®very event in the pitch data has a corresponding duration in the length data. Remember that the nybble F can't appear in the data, so some durations can't be stored. In other words, the duration value in decimal is (second nybble)Г—16 + (first nybble). The first nybble is the least significant nybble. In the length section, each nybble pair in the data stores the duration of an event in units of 12ths of a beat.

Music bar code manual#

The VL-5 manual doesn't describe any repeat events using manual entry, so I don't know if the VL-5 responds to repeat events in the barcode. The end event doesn't seem to be stored in the barcode. In the pitch section, each nybble pair in the data stores a pitch, rest, or other event.Д0 = accompaniment start (or rhythm start on the VL-5) However, Andy Wood's document includes a chord type value of F, which suggests the second nybble in each pair can be an F.) Pitch data (Note: In the barcode examples I have analyzed, the data section never contains an F nybble. Because a nybble value of F is used to mark the end of the line, the data never contains an F nybble. The data type nybble is only present on the first line of a section. The first line of a section has a line number nybble of 0, each successive line increments the line number by one.

Music bar code code#

The nybbles 04 start every bar code line. The format of a barcode line is shown below. Each section can consist of multiple barcode lines. The optional trailer is pairs of zero bits.ДЄ music piece is encoded in three sections: pitch data, length data, and chord data. The exact sizes of the segments can vary a little as long as the thin to wide ratio is 1:2.5.ДЇor most of the barcode, the bits are interpreted as nybbles (groups of 4 bits), least significant bit first. You can even send infrared light directly into the pen to simulate a barcode.Д®ach barcode segment, black or white, encodes one bit.ДЄ bit value of 0 is encoded as a thin segment (0.8 mm).ДЄ bit value of 1 is encoded as a wide segment (2.0 mm).

The white segments need to reflect infrared light and the black segments should not reflect infrared light. The barcode pen works by emitting infrared light and detecting if it is reflected back. The barcode alternates between black segments and white segments. (See the Links section at the end of this document.) Barcode format In 2014, a reader sent me some additional data values and information. I have learned about the barcode format by reading the keyboard manuals, studying a type-in program from a computer magazine, and analyzing the barcodes from a video and images online. (Storing music by pressing keyboard keys and buttons was called Manual Memory.) The procedure of scanning barcodes to store music in the keyboard's memory was called MS Memory. The barcode pen, called the MS-1, was included with the following Casio keyboards: VL-Tone VL-5, Casiotone MT-70, and Casiotone 701. This document describes the format of those barcodes. Casio Barcode Music Score Format Casio Barcode Music Score FormatДЄ few models of Casio keyboards included a barcode pen that allowed loading music into the keyboard by scanning pages of barcodes.