CA1079521A - Optical metronome - Google Patents

Abstract

ABSTRACT OF THE DISCLOSURE
An optical lighted metronome has a column of light projected onto a sheet of music by means of individual lamps passing light through lenses with the lights connected to illuminate successively by means of motor-driven contact arms or electronic circuitry.

Description

BACKG~OUND OF ThE INVENTION

The pre~ent invention relates to optical metro-nomes and more particularly to visual means of helping a person, when playin~ an instrument, to allow proper .~ timing i~ accordance with the musical notation.
The devices of the present invention differ fl-om prior art devices by their dynamic system of illumination and by their combination of means to provide visual indication of the note on the musical notation which is to be played and the duration of time that it is to be hold.
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SUM:~RY OF THE INVF.NTION

The present inven~ion allows the person playing an instrument to observe a sheet of music of similar orm to a sheet of music he would la~er use without aids when he becomes more skilled, and to be shown the note ; 5 to be played and its duration.
With the present invention lighting means illu~
mina~es a sheet of music from a light source in front ~` of the sheet.
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; - An object of the present invention is to utilize - a sheet of musie having a size and note spacing relative to the spacing between a plurality of lamps.

~ ~ With the present invention lighting means illu-;~ I mina~es a sheet of music w~ich may be opaque with lights !
placed in front of the sheet and in a form of a column of `~ 15 ~ light. ThP lighted portion thereby illuminates all stave~
- thus considerably shortening the time of waiting to continue playing if stopped by a mistake or falling behind. With the showing of a lighted portion in all . .
staves the playing can be continued in any staf after the column of light has transversed or.e staff length.
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~ jOne em~odiment provides lighting to indivi.dual .
,~;! lamps connected by a rotating contact mounted for timed rotation.
Still another embodiment provides the timing through use of an os~illator connected through gating means to individual lamps.

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In one aspect of the invention there ls provided an optical metronome for visually indicating the no~e to be played and the duration of the note on a sheet of music having at least two parallel staves comprising means for supporting a sheet of music, a housing along an edge o~ said supporting means in front o~ a sheet of music and parallel to the staves, and extending at least the length of a staff on the sheet of mUSiCr and means in said housing to project a ~eries of vertical columns of light successively across the staves on the ~ront o~ the sheet o~ music in timed relation to the tempo of the music being played from the sheet of music and spaced at the smallest note time interv~l with the notes on the sheet of music spaced at intervals related to the duration o~ each note.

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Brie~ Descrip~ion of the Drawin~s .
A complete understanding of the invention may be ~ad from the .~ollowing descri.ption of particular embodiments of the invention. In the description, reference is made to the accompanying drawings of 5 h- h ~ . W lC:
. Figure 1 is perspective view of an optical metronome of the present inventi.on;
~ ~ Figure 2 is a sectional elevational view along.. 1 lines 2-2 of Figure l;
. 10 Figure 3 is an enlarged partial section along , I . . . .
lines 3-3 of Figure l;
.. ~ Figure 4 is an enlarged perspective view of ~ the motor control section of the present invention which ~- ~
. ~ is connected to ~he device of Figure l;
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~- 15 Figure 5 is an example of a lamp connected . circuit ~sed with the control in Figure 4;
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~'~'s;~ Figure 6 is a circuit diagram of an alternate means of control of the lighting of the present invention;
v -~ Figure 7 shows some output wave forms of dividers L ` ' ' 1.... ~ . 20 and inverters o~ Figure 6.
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i 7dl Description of the Preferred Embodiments Referring firs-t to Figure 1 there is shown an optical metronome 10 which is placed so as to stand in a convenient position for viewing by the player o* a musical instrument.
Optical me-tronome 10 has an upright back portion 11 which may ` be the conventional music rack found on a piano or organ or may be incorporated as part of the present inven-tion. A sheet of music 12 is held against back 11~ Since the sheet 12 may be of heavy opaque material it may need no fur-ther clamping or other support to remain flat against the music rack or back of the optical metronome~ If the sheet 12 is of -thin material requiring support -then some means such as clamps may be used to hold the sheet 12 in place.
Situated at the base of back or music rack 11 in front of the rack is elongated housing 13 extending at least the full length of sheet of music 12. Lenses 14 are arranged in a line along -the length of housing 13 in the -top portion of housing 13. As shown in more detail in Figures 2 and 3 a lamp 15 is located beneath each of lenses 14 with the lenses 14 forming a lens system above each lamp 15 so as to project a columnar beam of light up onto sheet 12 as each of lamps 15 is successively lightedO Lenses 14 form a lens system which forms a parallel beam of light which crosses each of staves 16 simultaneous ly O :
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Figure 1 shows only two staves but in a similar manner any number of staves may be used. The only limiting factor remains in the size of the sheets of music 12 which may be easily handled and supported on a music rack. In order to allow better definition of the beam of light 17 each lamp and lens system i5 bes-t placed in a separa-te compartment having opaque walls 1~ to avoid carry-through of the light to the lenses of the adjoining lens sys-tem. Also located on housing 13 is on-off swi-tch 19 and reset switch 20. The reset switch 20 may be merely connected in a manner -to bring the control device through its cycle back to ~ts start position at an accelerated speed.
, A control device such as the motor-driven control of Figure 4 connected as shown in Figure 5 to lamp 15 may be used and connected -to housing 13 and the lamps therein through wires 21, Referring now to Figure 4 there is shown a motor-driven control 30 wherein controllable speed motor 31 has rotating arms 32 connected to its shaft with electrical contact 33 mounted on its outer end.
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Electrical contact 33 during its movemen-t contacts in turn each of contact sections 34 which are mounted on isolating plate 35. Wire connectors 36 are connected so as to make electrical contac-t with sections 34.

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~C~7~315~1 At the opposite ends of wire connectors 36 are located lamps 15, one for each wire connector 36, with each of ~:
these lamps 15 under a lens sys-tem 14. Electrically the connection is made from a power source which passes through a lamp 15 to one of the contact sections 34 and then through electrical contact 33 -to ring conducting surface 37 which completes -the circui-t to ground or the power source.
Another means of controlling the lighting of -the lamps 15 is through electronic circuitry such as, for example, that which is shown in Figure 6. In this form of control an oscillator 71 feeds a series of pulses to dividers 72, each of which has a pulse form outpu-t sent through two outputs, one of each of which is fed : through an inver-ter or NOT circuit 73. Pulses directly from the dividers and from the inver-ters are selectively fed to each of AND gates 74 and thence through gates 74 in sequence to light sources or lamps 75 or as shown in other figures lamps 15. Outputs of the dividers 72 and inverters 73 are shown diagramatically in Figure 15.with dots on the pulse forms to designate the gating operation to channel power to each of eight designa-ted lamp positions 75 in sequence and combinations triggering each of the AND
gates 74. Thus such electronic circuitry may be used to control the lamps of the presen-t inven-tion or, in fact, ; any sequence generator may be substituted to perform t elec-tronically the control of sequential lighting of the ~ lamps~

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. , 9~%~ ,, ~ach of the con~rol circuits sho~n in Figures 4 through 6 can be altered to accommodate the number oi~ lamps required and this number will be determined to some extent by the length of the housing 13 which can be comfortably accommodated on the instrument and the len~th of the music sheet 12 which can be accommo-dated to ~he playing of that instrument.
The optical metronome of the present invention flashes a column of light upward from along the base of ~he sheets of music. At some ~imes the column of ~`'' ' light appears over a point on the staff on the music ~- - sheet at which there is no musical notation. At such times this ls merely an indication to the player of the instrument that the previous note is to be held for a duration of time until the column of light again :
covers a following musical notationO Thus the device ~, of the present invention is clearly able to define the . , I - note to be played and the duration o time for continuing ,. . . .
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` The sheets of music 12 used with the optical , .~
~ metronome of the present in~ention differ from the sheets i, . . .
'~ of music ordinarily encountered by the musician although L
,~ having an appearance ~UitP similar to those sheets.

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~ 7 Not only mus-t -the size of the sheets be altered to fit the metronome face resulting in staves which may even be double the length o~ staves in regular sheets of music but the beats per staff during which a light or lighted channel appears must be of a number compatible with the mechanism of the optical metronome. This involves new layou-t and re-drawing of sheets of music to plan beats per staff for columns of light to appear at each note or at spaces following where there is no note due to music being played or timing variation among types of notes, and comparably the number of ~
measures so as to have -the exact number of beats which ::
equals the number of columns of ligh-t appearing in a:
horizontal line. The notes shown on music sheet 12 are merely for illustra~ive purposes and may not be necessarily ~rawn in all instances wi-th spacing in conformance with the above explanation because of perspective viewing but an attempt has been made to illustrate the sheet of music of -the present invention .
albeit in very simple form without the music for the bass clef shown thereonO The bass clef nota-tion would of course also be drawn comparable to the measures shown wi-th a single column o~ light lighting notes for both clefs simultaneouslyO : -~ .
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7 9 5%~ _ It will be obvious to those skilled~in the art ~hat various changes may be made wi~hout depar~ing fro~ Lhe scope of the invention and the invention is ! not to be considered to be limited to ~he preerred e~odiment or embodi.ments as sho~7n in the drawing and descr;bed in the Speciication. - I

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Claims (7)

The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:

1. An optical metronome for visually indicating the note to be played and the duration of the note on a sheet of music having at least two parallel staves comprising means for supporting a sheet of music, a housing along an edge of said supporting means in front of a sheet of music and parallel to the staves, and extending at least the length of a staff on the sheet of music, and means in said housing to project a series of vertical columns of light successively across the staves on the front of the sheet of music in timed relation to the tempo of the music being played from the sheet of music and spaced at the smallest note time interval with the notes on the sheet of music spaced at intervals related to the duration of each note.

2. The optical metronome of claim 1, further characterized by said projecting means including a plurality of light sources spaced within said housing, means to project each source of light in a vertical column parallel to each of the other of said vertical columns.

3. The optical metronome of claim 2, further characterized by each means to project a source of light being a lens system associated with each individual source of light.

4. The optical metronome of claim 3, further characterized by each of said sources of light and associated lens system located in a separate compartment in said housing having opaque walls.

5. The optical metronome of claim 2, further characterized by said projecting means further including a controllable speed motor, an isolating plate having electrical contact sections therein equal in number to said light sources, a rotating arm and contact thereon mounted for contacting each of said electrical contact sections in turn during a rotation of said arm, and said light sources electrically connected to each of said electrical contact sections.

6. The optical metronome of claim 2, further characterized by said projecting means further including an oscillator means to trigger series of pulses, divider means connected to said oscillator means to form different pulse forms, inverter means connected to said divider means having outputs with pulse forms inverted from the pulse forms from said divider means, a plurality of gating means connected to said divider means and said inverter means to be gated by combinations of pulse forms from said divider means and said inverter means, and at least one of said plurality of said light sources connected to each of said gating means.

7. The optical metronome of claim 1, further characterized by said housing being located along a bottom edge of said supporting means.