JPS5834496A - Automatic transposing instrument for electronic musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic transposition device for an electronic musical instrument that controls the pitch of musical tones produced by the electronic musical instrument.

Conventionally, when singing while playing an electronic musical instrument automatically or playing a keyboard, the pitch range of the musical tones produced by the performance differs depending on the singer, so it cannot be said that the pitch of the musical tones produced by the performance is necessarily suitable for the singer.

Therefore, it is only necessary to transpose the music to match the vocal range of the singer, but since the automatic performance by the above-mentioned Seiko instruments is performed based on predetermined memorized score data, unless the memorized score data IJ is changed, the key will be transposed. I can't. Furthermore, since keyboard performance is performed based on sheet music, it requires advanced performance skills to read the sheet music and transpose the music to perform, and there is also the problem that electronic instruments with a small number of keys cannot achieve the right range. There was a point.

This invention was made in view of the above circumstances, and provides an automatic transposition device for an electronic musical instrument that can automatically transpose a musical piece played automatically or played on a keyboard to a key that matches the range of the singer and generate musical tones. The purpose is to provide.

According to this invention, the δ musical tone is generated based on the musical tone 1H information sequentially read out from the storage means for storing musical tone information generated in connection with a key press on a keyboard or musical tone information indicating a musical tone to be emitted. At the time of recording, the musical tone information corresponding to a specific sound such as the highest note, the lowest note, or the note at the beginning of singing is detected from among the musical tone information stored in the storage means, and the pitch and pitch indicated by the detected musical tone information are detected. At the time of specification, a pitch difference is detected based on a comparison with a pitch specified by a voice or a key pressed on the keyboard in relation to the vocal range of the singer, and the musical tone to be sounded is determined according to the pitch difference. Try to control the pitch.

The invention will now be described in detail with reference to the accompanying drawings.

The figure is a block diagram showing an embodiment of an electronic musical instrument to which the present invention is applied. The keyboard l generates key information (key code) KC indicating the pitch of the pressed key in response to a key pressed on the keyboard.

This key code KC is, for example, a 2-bit octave code B representing an octave range as shown in Table 1.
This is a 6-bit binary signal consisting of 4-bit note codes N41, NIII, Ng, and N1 representing the names of 12 notes within one octave.

Table 1 First, we will explain the case of normal keyboard performance and automatic performance, that is, the case where automatic transposition is not performed.1 In this case, the key code t< C generated from the keyboard 1 and added to the key information correction circuit 2. is not modified here and is directly led to the keyboard tone forming circuit 3 as the key code KC'. The keyboard tone forming circuit 3 forms a musical tone signal based on the input key code KC', and applies this signal to the speaker 5 via the amplifier 4. As a result, the speaker 5 directly produces the sound corresponding to the key pressed on the keyboard 1.

Also, when performing automatic performance with this Nariko instrument,
Set the music card 6 in the reader 7.

Note that the score of the music to be played is printed on the score card 6, and below it is a magnetic tape 6a on which score data corresponding to the score (key code KC indicating the pitch of the notes shown on the score) is written. is attached. The reader 7 reads the key code KC from the magnetic tape 6a of the musical score card 6, outputs this key code KC to the musical score data memory 8, and writes a write signal WR for writing the key code KC into the musical score data memory 8 to control the reading and writing. circuit 9
Output to.

The write/read control circuit 9 controls the writing of the key code KC into the musical score data memory 8 and the reading of the key code KC from the musical score data memory 8.
When R is input, the key code KC is written into the score data memory 8 and the address of the score data memory 8 is advanced. In this way, the key code KC written on the magnetic tape 6a of the music score card 6 is written into the music score data memory 8 at high speed.

The key code KC stored in the musical score data memory 8 is the tempo clock TC oscillated from the tempo oscillator 10.
When L is applied to the write/read control circuit 9, it is sequentially read out based on the output of the write/read control circuit 9.

The read key code KC is applied to the key information correction circuit 11. When performing normal automatic performance, the key code KC is not corrected here, but is sent as it is as the key code KC' to the automatic performance sound forming circuit 12. guided by.

Like the keyboard sound forming circuit 3, the automatic performance sound forming circuit 12 forms a musical sound signal based on the manually inputted key code KC', and applies this signal to the speaker 5 via the amplifier 4. As a result, the speaker 5 automatically produces musical tones corresponding to the notes notated on the musical score card 6.

The autorhythm device 13 is used for automatic rhythm performance, and sends rhythm sound signals representing various rhythm instrument sounds from the tempo oscillator 10 in response to a rhythm selected by a rhythm selection switch (not shown). It is generated in response to the oscillated tempo clock TCL. This rhythm sound signal is also amplified by 111g by the amplifier 4 in the same way as above.
The speaker 4 produces a rhythm sound.

Next, a case (transposition mode) in which a musical piece produced by keyboard performance and automatic performance is automatically transposed to match the vocal range of the singer will be described. In this case, transpose mode switch 1
4 is turned on, and the signal 11' is written to the read/write control circuit 9, the highest key information detection circuit 15, and the memory circuit 1, respectively.
Add to G.

When the signal "1" is applied from the transposition mode switch 14, the write/read control circuit 9 reads out the key code KC stored in the musical score data memory 8 at high speed. The read key code KC is added to the highest pitch key information detection circuit 15. When the highest pitch key information detection circuit 15 receives the signal 11'' from the transposition mode switch 14, it selects one song from the input key code KC. The key code KC corresponding to the highest note among the notes is detected and outputted to the pitch difference detection circuit 17.In addition, automatic performance sound formation is performed for the key code KC read out at high speed from the score data memory 8. The circuit 12 is designed so that no musical tone signal is generated.

On the other hand, the key code KC corresponding to the highest note that the singer can utter is specified via the keyboard 1 or the microphone 18. When specifying the key code KC using keyboard 1, key/
The movable contact piece 19a of the audio changeover switch I9 is connected to the contact point 19b.
Connect to. As a result, the signal 11'' is applied to the A input select terminal SA of the selector 20, so +1/〃Even?(1
chooses eight people. Here, when the singer presses a key corresponding to the highest note that can be uttered on the keyboard 1, a key code KC indicating the highest note is outputted to the memory circuit 16 via the selector 20.

Similarly, when specifying the microphone 1BVC and the key code KC, the movable contact piece 1 of the key/audio changeover switch I9
Connect 9a to contact 19c'/C. This will cause the signal ″
Since IM is applied to the selector 200B input select terminal SH, the selector 20 selects the B input. Here, when the singer utters the highest note that can be uttered into the microphone 18, the voice is converted into an electrical signal by the microphone 18 and applied to the fundamental wave detection circuit 21. Extract the fundamental wave and convert it into key information conversion circuit 2
Output to 2. The key information conversion circuit 22 converts the frequency of the manually generated fundamental wave into a key code KC indicating the pitch (see Table 1), and outputs the key code KC to the memory circuit 16 via the B input of the selector 20. .

The memory circuit 16 receives the signal "1" from the transposition mode switch 14.
” is added, the key code KC output from the selector 20 is stored, and this is sent to the pitch difference detection circuit 1.
Output to 7.

The pitch difference detection circuit 17 uses the key code KC corresponding to the highest note in the performance piece outputted from the highest pitch key information detection circuit 15 and the key code corresponding to the highest note that the singer can utter outputted from the memory circuit 16. The pitch difference between the highest notes is detected by comparing with KC, and difference information corresponding to the pitch difference is added to the key information correction circuits 2 and 11, respectively.

When a keyboard is played in the above transposing mode, the key code KC generated from the keyboard 1 and added to the key information correction circuit 2 is
Here, it is corrected based on the difference information output from the pitch difference detection circuit 17, and is added to the keyboard sound formation circuit 3 as a key code KC'. Therefore, the musical tone emitted from the speaker 5 is higher than the pitch indicated by the musical score by the pitch difference detection circuit 17.
The sound will be lower (or higher) by the pitch difference detected.

As a result, when a song is played on the keyboard according to the musical score, the key is transposed to match the vocal range of the singer, that is, the key is transposed by the pitch difference and the sound is produced.

Similarly, when automatic performance is performed in the transposition mode, the key code KC that is sequentially read from the score data memory 8 and added to the key information correction circuit 11 is transmitted to the pitch difference detection circuit 1.
7, is corrected based on the difference information, and is added to the automatic performance sound forming circuit 12 as a key code KC'.

Therefore, the musical tones produced by the speaker 5 are transposed and produced in the same way as described above.

In the above embodiment, the pitch is controlled by modifying the key code KC, but the present invention is not limited to this, and the frequency of the sound source signal output from the sound source circuit (not shown) of the musical tone forming circuit is controlled The pitch may also be controlled by this. In addition, the key code KC of the musical score data memory manually input to the pitch difference detection circuit is not limited to the key code KC corresponding to the highest note in the performance song, but also, for example, the key code KC corresponding to the lowest note in the performance song, or the key code KC corresponding to the lowest note in the performance song. It may be a key code KC corresponding to the first note. However, in this case,
It goes without saying that the pitch specified via the keyboard or microphone must be the lowest pitch that the singer can produce and the pitch at which the singer begins singing.

As described above, according to the present invention, musical tones can be generated by automatically transposing a musical piece played automatically or played on a keyboard to a key that matches the vocal range of the singer. This facilitates keyboard performance since there is no need to transpose the music when playing the keyboard, and also eliminates the inconvenience of not being able to get the right range due to transposition even in an electronic musical instrument with a small number of keys.

[Brief explanation of the drawing]

The figure is a block diagram showing an embodiment of an electronic musical instrument to which the present invention is applied. 1...Keyboard, 2.11...Key information correction circuit, 3...
・Keyboard sound forming circuit, 5--Speaker, 6--Score card, 7--Reader, 8--Score data memory, 9
...Writing/reading control circuit, 10... Tempo oscillator, 12... Automatic performance sound forming circuit, 13... Autorhythm device, 14... Transposition mode switch, 15...
Highest pitch key information detection circuit, 16... memory circuit, 17.
... Pitch difference detection circuit, 18... Microphone, 19... Key/audio switching switch, 20... Selector, 21...
...Fundamental wave detection circuit, 22...Key information conversion circuit.

Claims (6)

[Claims] (1) A storage means for storing musical tone information indicating a musical tone to be produced, a musical tone generating means for generating a musical tone based on the musical tone information stored in the storage means, and a pitch for specifying a pitch related to a predetermined musical range. a specifying means, a detecting means for detecting musical tone information indicating a specific tone from among the musical tone information stored in the storage means, and a pitch indicated by the musical tone information detected by the detecting means and a pitch specified by the pitch specifying means. and pitch control means for detecting the pitch difference based on a comparison with the pitch of the musical tone generated by the musical tone generating means, and controlling the pitch of the musical tone generated from the musical tone generating means in accordance with the pitch difference. automatic transposing device. (2) The automatic transposition device for an electronic musical instrument according to claim 1, wherein the pitch specifying means specifies the pitch based on voice or key presses on a keyboard in relation to the vocal range of the singer. . (3) The musical tone information indicating the specific note corresponds to the highest note, the lowest note, or the note at the beginning of singing among the musical note information stored in the storage means (1).
An automatic transposition device for an electronic musical instrument as described in Section 1. (4) musical sound generating means for generating musical tones based on musical sound information generated in relation to key presses on a keyboard, storage means for storing musical sound information indicating musical sounds to be produced, and pitches related to a predetermined pitch range; a pitch specifying means for specifying a pitch, a detecting means for detecting musical tone information indicating a specific tone from among the musical tone information stored in the storage means, and a pitch indicated by the musical tone information detected by the detecting means and the pitch. pitch control means for detecting the pitch difference based on a comparison with the pitch specified by the specifying means and controlling the pitch of the musical tone generated by the musical tone generating means in accordance with the pitch difference; Automatic transposition device for electronic musical instruments. (5) The automatic transposition device for an electronic musical instrument according to claim (4), wherein the pitch specifying means specifies the pitch based on voice or keyboard presses in relation to the vocal range of the singer. . (6) The musical tone information indicating the specific tone includes the highest tone and the lowest tone among the musical tone information stored in the storage means.