JPH0674999B2 - Tuning device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tuning device for inputting an arbitrary sound and performing tuning with reference to the pitch information thereof. For example, the sound of a musical instrument played by a teacher or the like is input. The pitch information is detected and stored in a selected one of a plurality of memories, and the pitch information is read from the selected one of the plurality of memories and used as a reference for tuning. The instrument is changed to make it easy to tune at any pitch.

[0002]

2. Description of the Related Art Conventionally, as a tuning device capable of tuning at any pitch, a numerical value corresponding to a desired pitch is manually set, and the set value is input as frequency control data. In response, a reference frequency signal for tuning has been proposed.

[0003]

According to the above-mentioned conventional technique, it is necessary to set a numerical value corresponding to a desired pitch each time tuning is performed, and the setting operation is troublesome.

Further, even if tuning is performed using a reference frequency signal corresponding to the set numerical value, the pitch of the musical instrument after tuning may not suit the performer's taste. The occurrence of such a situation is relatively small in musical instruments such as a piano using a scale of equal temperament, but relatively large in musical instruments such as a woodwind and a brass that use a scale other than equal temperament. This is because musical instruments that use equal-tempered scales have a fixed pitch of 100 cents for each adjacent pitch, and there is little room for personal preference, whereas musical instruments that use non-equal-tone scales. This is because the pitches of adjacent pitch names are not constant and teachers, band leaders, and the like often set pitches or pitches based on individual pitches.

An object of the present invention is to allow tuning at any pitch based on an actual musical instrument sound without a troublesome numerical setting operation, and to tune a wide range of musical instruments, octaves, scales, etc. Is to enable.

[0006]

A tuning device according to the present invention corresponds to (a) a detecting means for inputting a sound of a desired musical instrument and detecting pitch information thereof, and (b) corresponding to a plurality of pitches. A readable / writable storage unit having a plurality of storage units having a plurality of storage areas; (c) a pitch selection unit for selecting an arbitrary pitch from the plurality of pitches; and (d) the plurality of storage units. Storage selecting means for selecting an arbitrary storage unit among the
(E) a designating means for selectively designating either the recording mode or the tuning mode; and (f) a storage section selected by the storage selecting means in a state where the recording mode is designated by the designating means. Writing means for writing the pitch information detected by the detecting means in a storage area corresponding to the pitch selected by the pitch selecting means; and (g) a state in which the tuning mode is designated by the designating means. In the storage section selected by the storage selecting section, reading means for reading out pitch information from a storage area corresponding to the pitch selected by the pitch selecting section, and (h) the tuning mode by the designating section. In the designated state, the pitch information read by the reading means is compared with the pitch information detected by the detecting means, and the comparing means is provided to notify the comparison result.

[0007]

According to the structure of the present invention, in the state in which the recording mode is designated, the desired storage section is selected by the memory selection means and the desired pitch is selected by the pitch selection means. Then, when a musical instrument sound to be played by, for example, a teacher is input to the detection means in correspondence with the selected pitch, the pitch from the detection means is stored in the storage area corresponding to the selected pitch in the selected storage section. Information is written as reference pitch information. Such a writing operation can be performed for each storage unit and for each pitch.

Further, in the state where the tuning mode is specified, when the desired storage section is selected by the memory selection means and the desired pitch is selected by the pitch selection means, the pitch selected in the selected storage section is set. The reference pitch information is read from the corresponding storage area. In parallel with this, when a tone corresponding to the selected pitch is input from the to-be-tuned musical instrument to the detecting means, pitch information is detected from the input sound, and the comparing means detects the read pitch information. Compared with pitch information,
The comparison result is notified by a display or the like. Therefore, by adjusting the pitch of the musical instrument to be tuned so that a good comparison result can be obtained, tuning that is faithful to the performance sound of the teacher etc. is possible, and the musical instrument, octave or scale etc. is changed for each storage unit. This allows a wide range of tuning.

[0009]

1 shows a circuit configuration of a tuning device according to an embodiment of the present invention. The tuning device is capable of performing a recording mode operation and a tuning mode operation.

The microphone 10 is for inputting an external sound such as a musical instrument sound, and the input sound signal is supplied to the pitch detection circuit 14 via the input amplifier 12.

The pitch detection circuit 14 detects the pitch of the input sound signal and sends out pitch data PD corresponding to the pitch. As an example, the fundamental wave extraction circuit, the waveform shaping circuit, and the counting circuit. It can be configured by a circuit or the like. When such a configuration is adopted, the fundamental wave extraction circuit extracts the fundamental wave of the input sound signal, the waveform shaping circuit converts the fundamental wave into a square wave, and the counting circuit outputs the counting output corresponding to the period of the square wave. It is sent as pitch data PD.

The switching circuit 16 sends out the pitch data PD as an output X or Y according to the mode designating signal MSS from the recording / tuning mode selection switch MS. When the recording mode is specified by the mode selector switch MS,
The control signal SX composed of the signal MSS becomes "1", and the pitch data PD is supplied to the storage circuit 18 as the output X.
When the tuning mode is designated by the mode changeover switch MS, the control signal SX becomes "0", and the pitch data PD
Is sent as output Y.

The memory circuit 18 has n memories M (1) to M (n), each of which receives the pitch data PD, and the operation of these memories is performed by the memory selector 20.
Memory selection signals ME _{1 to} ME _{n from the} , note name selector 22
Pitch name selection signal NTS and mode switch MS
Is controlled by the mode designating signal MSS from.

The memory selector 20 has n memory selection switches S (1) to S (n). When any of these switches S (1) to S (n) is turned on,
Of the memory selection signals ME _{1 to} ME _n , the signal corresponding to the turned-on switch becomes “1”. Memory selection signal ME ₁ ~
ME _n is supplied as the enable signal EN to the memories M (1) to M (n), so that the switch S
By turning on any one of (1) to S (n), the memory corresponding to the turned-on switch among the memories M (1) to M (n) can be selected and operated.

The note name selector 22 has 12 of A, A ^# ... G ^# .
Pitch name selection switches S ₁ , S ₂ ... S corresponding to each pitch name
₁₂ , the state signals of these switches are supplied to the memories M (1) to M (n) as the note name selection signal NTS.

The mode designating signal MSS from the mode changeover switch MS is supplied to the memories M (1) to M (n) as a write / read mode designating signal W / R. When the recording mode is designated by the switch MS, the mode designation signal W / R becomes "1" and all the memories M (1) to M (n) are in the write mode. When the tuning mode is designated by the switch MS, the mode designation signal W / R becomes "0" and all the memories M (1) to M (n) are set to the reading mode.

[0017] M (1) ~M each memory (n) is representative as M (1) for note names as shown in FIG. 2 A, A ^#
... 12 storage areas R1 and R2 respectively corresponding to G ^#
... has R12. If on any one of the tone name selection switch S ₁ to S _12, on the storage area corresponding to the switch were among the storage extents R1~R12 is selected.

As an example, the memory selection switch S (1)
When the note name selection switch corresponding to the note name C is turned on with the memory M (1) turned on and the memory M (1) is selected, the storage area in the memory M (1) is hatched as shown in FIG. R4 is selected. At this time, if the mode designation signal W / R is "1" (write mode), the storage area R4
Pitch data PD is written in and the signal W / R is "0".
In the (read mode), the pitch data PD is read from the storage area R4.

The pitch data RPD (1) to RPD (n) read from the memories M (1) to M (n) are supplied to the OR circuit 24. Then, the pitch data RPD (RPD (1) to RPD (n) sent from the OR circuit 24 is transmitted.
Is supplied to the tone forming circuit 26.

The tone formation circuit 26 forms and sends out a tone signal TS based on the pitch data RPD, and can be constituted by a waveform memory, a read circuit, a D / A conversion circuit, etc. as an example. When such a configuration is adopted, the waveform memory stores musical tone waveform data obtained by sampling and digitally converting a musical tone waveform of an actual musical instrument,
The read circuit reads the waveform data from the waveform memory at a read speed corresponding to the pitch data RPD, and the D / A conversion circuit converts the read waveform data into an analog signal to generate the tone signal T.
Send as S.

When the tone generation switch SS is turned on, the tone signal TS is supplied to the speaker 30 via the output amplifier 28 and is sounded as a tone. If you don't want to pronounce it,
The sounding switch SS may be turned off.

The pitch data RPD from the OR circuit 24 is
One of the comparison inputs A is supplied to the comparison circuit 32. The other comparison input B of the comparison circuit 32 is supplied with the pitch data PD sent as the output Y from the switching circuit 16 in the tuning mode.

The comparison circuit 32 compares the comparison inputs A and B and generates a comparison output CO corresponding to the difference between them.

The display control circuit 34 causes the display 36 to display the difference between the reference pitch (comparison input A) and the tuned pitch (comparison input B) according to the comparison output CO.

In the actual tuning, the tuning state may be displayed by synchronizing with the sound produced from the speaker 30, or by viewing the display 36, or by using these methods together.

As an example, in order to tune a clarinet, a teacher or the like plays a reference clarinet sound. At this time, the recording mode is designated by the mode selector switch MS, and M (1) is set by the memory selector 20.
~ M (n) is selected, and the note name of the performance note is selected by the note name selector 22. As a result, the pitch data PD of the reference clarinet sound is written in the storage area R4 of the memory M (1), for example, as described above with reference to FIG. Similarly, pitch data corresponding to other pitch names can be written in the memory M (1).
Pitch data of other octaves can be written in (2), M (3) ...

After the pitch information of one or a plurality of reference tones is recorded as described above, the tuning mode is specified by the mode changeover switch MS, and the tuning from the storage circuit 18 is performed by the memory selector 20 and the note name selector 22. Select and read the pitch data that you want to use as the reference. Then, if the sound generation switch SS is turned on, a reference clarinet sound is produced from the speaker 30. Further, the reference pitch data RPD is supplied to the comparison circuit 32. At this time, when a clarinet sound to be tuned is input via the microphone 10, the pitch data PD corresponding to this input sound is supplied to the comparison circuit 32 and compared with the reference pitch data. As a result, a display corresponding to the pitch difference between the reference tone and the tuned tone is displayed on the display 36. Therefore, the tuner may perform a tuning operation so that the display unit 36 displays the tuning state of zero pitch difference.

After that, pitch data can be selected and tuned for other pitch names similarly to the above.

In tuning a transposing instrument such as a wind instrument, instead of storing the pitch data corresponding to the pitch names A to G ^# in the storage areas R1 to R12, the pitch names C, D,
E, F, G, A, B are the floor names Do, Re, Mi, Fa, So, La,
Storage areas R4, R6, R8, R9, R1
1, R1, R3 are de, le, mi, fa, so, la,
The pitch data of the pitch may be stored.

For example, the flute has a tone C, the clarinet has a tone B ^b , the alto saxophone has a tone E ^b , and the pitch of the floor name “do” is different. Therefore, for the clarinet, the pitch data of B ^b may be stored in the storage area R4 corresponding to C (do) instead of being stored in the storage area R2 corresponding to A ^# . For the alto saxophone,
Instead of storing the pitch data of E ^b in the storage area R7 corresponding to D ^# , it may be stored in the storage area R4 corresponding to C (do). It is up to the user to decide which storage method to use.

The operation in the tuning mode as described above can be performed in a place (eg, home) different from the place (eg, school) where the operation in the recording mode is performed. For this purpose, a memory M is provided by a battery backup or the like.
The memory of (1) to M (n) is retained, or the memory M
Nonvolatile materials may be used as (1) to M (n).

In the above operation example, the memories M (1), M
The pitch data of different octaves are stored in (2) ..., for example, the memory M (1) has a clarinet, the memory M (2) has a horn, and the memory M (3) has a trumpet. Pitch data of different musical instruments may be stored for each.

The tuning device of the present invention is suitable for tuning a musical instrument using a scale other than the equal temperament scale, but the application is not limited to this. For example, in a piano that uses the equal temperament scale, the tuner sets the pitch of the high range to be higher and the pitch of the low range to be lower than that of the middle range. After inputting to the tuning device of the present invention and tuning another piano using this, tuning work becomes easy.

[0034]

As described above, according to the present invention, since the actual performance sound is input and the pitch information thereof is used as a reference for tuning, a troublesome input operation such as numerical setting is unnecessary, and A tuning that is faithful to the actual performance sound can be performed for a wide range of musical instruments, octaves, scales, etc. Therefore, the tuning device of the present invention is useful for tuning various musical instruments, and is particularly useful for tuning a musical instrument that uses a scale such as a pure tone other than equal temperament or a transposing musical instrument by a teacher, band leader, or the like. This is preferable because the reference pitch reflecting the individual pitch can be freely recorded at a desired time and place.

In addition, since the detecting means for inputting the musical instrument sound and detecting the pitch information thereof is used for both the recording mode and the tuning mode, the configuration is simplified, and a small and lightweight tuning device can be realized. There is also an effect.

[Brief description of drawings]

FIG. 1 is a block diagram showing a circuit configuration of a tuning device according to an embodiment of the present invention.

FIG. 2 is a layout diagram showing a storage area layout of a memory M (1) in the storage circuit of FIG.

[Explanation of symbols]

10 ... Microphone, 12 ... Input amplifier, 14 ... Pitch detection circuit, 16 ... Switching circuit, 18 ... Storage circuit, 20 ... Memory selector, 22 ... Pitch name selector, 24 ... OR circuit, 2
6 ... Tone forming circuit, 28 ... Output amplifier, 30 ... Speaker, 32 ... Comparison circuit, 34 ... Display control circuit, 36 ... Indicator, MS ... Recording / tuning mode changeover switch, SS ... Sound generation switch.

Claims (1)

[Claims] 1. A detection means for inputting a sound of a desired musical instrument and detecting pitch information of the sound, and a storage section having a plurality of storage areas respectively corresponding to a plurality of pitches. Readable / writable storage means, (c) pitch selection means for selecting any pitch from the plurality of pitches, and (d) storage selection for selecting any storage part from the plurality of storage sections. Means, and (e) designation means for selectively designating either the recording mode or tuning mode; and (f) the storage selected by the storage selection means in a state where the recording mode is designated by the designating means. Writing means for writing the pitch information detected by the detecting means in a storage area corresponding to the pitch selected by the pitch selecting means, and (g) the tuning mode is designated by the designating means. Memory in the state Reading means for reading pitch information from a storage area corresponding to the pitch selected by the pitch selecting means in the storage section selected by the selecting means; and (h) the tuning mode is specified by the specifying means. In this state, the tuning device is provided with a comparing means for comparing the pitch information read by the reading means with the pitch information detected by the detecting means and notifying the comparison result.