JP3462590B2 - Overtone addition 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 harmonic overtone adding device for adding an overtone of a musical tone signal to an input musical tone signal, and more specifically, for a harmonic overtone adding device for adding a harmonic overtone of a controlled level. It is about.

[0002]

2. Description of the Related Art Conventionally, there is known a harmonic overtone adding device for generating an overtone by applying a predetermined process to an input musical tone signal and adding an output signal to the input musical tone signal. Such an overtone addition device extracts a fundamental wave from a voice signal of an input voice or musical instrument sound, subjects the signal composed of the fundamental wave to a predetermined process, and outputs a signal including a higher-order overtone component. By generating and outputting this, it is possible to output a sound that is more audibly superior to the original voice or instrument sound.

Generally, a harmonic overtone adding device uses a filter having a non-linear phase characteristic to transform or synthesize an inputted musical tone signal, and uses half-wave rectification or full-wave rectification, Alternatively, a VCA circuit is used to transform an input signal according to a certain rule, and a signal including a harmonic component is generated.

For example, in Japanese Patent Laid-Open No. 5-232964, a tone signal circulating in a loop circuit is divided into positive and negative components, and each component has an independent non-linear phase characteristic.
Pass it through the PF, mix it and mix the mixed signal
An overtone addition device is disclosed which forms a tone signal having a frequency component that is not included in the original waveform by feeding back the original signal.

[0005]

However, the conventional overtone adding device cannot control the balance between the overtone components such as the balance between the odd overtone component and the even overtone component. was there. That is, the harmonic component itself can be changed by changing the threshold value of the half-wave rectification or the full-wave rectification, but the balance cannot be controlled as desired. Further, even in the overtone addition device disclosed in Japanese Patent Laid-Open No. 5-232964, it is not possible to control the balance of overtone components between even-order overtones and odd-order overtones.

The present invention provides an overtone adding device for controlling the balance of overtone components between an odd overtone and an even overtone as desired to add a signal having a specific overtone structure to an original signal. The purpose is to

[0007]

The object of the present invention is to:
A harmonic overtone adding device configured to generate a signal including an overtone component from an input musical tone signal, and mix and output the tone signal and the signal including the overtone component. From the fundamental wave, and first harmonic overtone generating means for generating a signal including at least an odd harmonic component of the fundamental wave from the fundamental wave signal. A second overtone generating means for generating a signal including at least an even harmonic component of the fundamental wave from a signal composed of the fundamental wave; a signal generated by the first overtone generating means; Two
By mixing the signal generated by the harmonic overtone generating means at a predetermined ratio, the harmonic overtone control means for controlling the harmonic overtone to be added, and the signal mixed by the harmonic overtone control means,
This is achieved by a harmonic overtone adding device characterized in that the musical tone signal is mixed and outputted.

Another object of the present invention is to generate a signal containing an overtone component from an input music signal, and mix and output the tone signal and the signal containing the overtone component. > a sound addition device, from said musical tone signal, and the offset supply means for adjusting the fundamental wave extracting means for extracting a signal composed from the fundamental wave, the level of the signal composed of the fundamental wave, the offset First half-wave rectifying means for passing only a signal smaller than zero level from the signal given the offset by the giving means, and first performing a predetermined calculation on the signal output from the first half-wave rectifying means A second half-wave rectifying means for passing only a signal larger than zero level from the offset-added signal, and a signal output from the second half-wave rectifying means,
A second arithmetic unit that performs an arithmetic operation different from the arithmetic operation performed by the first arithmetic unit; and an addition processing unit that adds the output signal of the first arithmetic unit and the output signal of the second arithmetic unit, The addition
A signal output from the processing unit, also achieved by the musical tone signal and the harmonic adding device, characterized in that is output is mixed.

[0009]

According to the present invention, the overtone control means mixes a signal containing at least an odd harmonic component of the fundamental wave and a signal containing at least an even harmonic component of the fundamental wave at a predetermined ratio. As a result, since the overtone to be added to the tone signal is controlled, it is possible to obtain a signal in which a desired overtone component is added to the tone signal with a simple configuration.

Further, the second harmonic overtone adding means uses an offset applying means for applying a predetermined offset to the signal composed of the fundamental wave, and a signal offset by the offset applying means from a zero level. A third half-wave rectifying unit that allows only a small signal to pass, a fourth arithmetic unit that performs a predetermined arithmetic operation on the signal output from the third half-wave rectifying unit, and a signal composed of the fundamental wave. A fourth half-wave rectifying means for passing only a signal larger than a zero level, a fourth arithmetic unit for performing a predetermined arithmetic operation on the signal output from the fourth half-wave rectifying means, and the third arithmetic operation In the case of the second addition processing means for adding the output signal of the unit and the output signal of the fourth arithmetic unit, the harmonic component can be controlled by controlling the offset value.

Further, according to the present invention, the signal to which the offset is given by the offset giving means is subjected to different calculations and added to the two signals half-wave rectified in the upper and lower directions to obtain a desired harmonic component. The applied signal can be obtained. The harmonic component can be controlled by controlling the offset value or the content of calculation given to the two half-wave rectified signals.

[0012]

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 is a block diagram showing the configuration of an overtone addition device according to an embodiment of the present invention. As shown in FIG. 1, this overtone addition device includes an amplification unit (AMP) 12 for amplifying an original signal of a musical tone signal given from an input end, and a band-pass filter (B) for passing only a predetermined band of the musical tone signal.
PF) 14, a harmonic overtone generator 16 that generates a signal including a predetermined overtone from the signal output from the BPF 14, and BP
From the output of F14, the odd-numbered harmonic overtone generating unit 18 that generates a signal containing odd-order harmonic overtones, and the output of the harmonic overtone generating unit 16 and the output of the odd-order harmonic overtone generating unit 18 By determining, the overtone control unit 20 that controls overtones, the high-pass filter (HPF) 22 that passes only signals in a predetermined band or higher, and the HPF
A mixing unit 24 that mixes the output of 22 and the original signal of the musical sound signal given from the input end, and an amplification unit 26 that amplifies the output of the mixing unit 24.

The BPF 14 uses the input musical tone signal to
A component corresponding to the fundamental wave of the overtone to be generated in the overtone generating device according to the present embodiment is extracted, and a signal composed of this component is output.

The harmonic overtone generation unit 16 applies an offset level adjusting unit 32 for giving a predetermined offset given by an input device (not shown) to the output signal from the BPF 14, and an upper limit half of the output signal of the offset level adjusting unit 32. Upper limit half-wave section 34, a calculation section 36 that performs an operation on the upper half-wave signal, a lower limit half-wave section 38 that lower-limits half-wave the output signal of the offset level adjusting section 32, and a lower-limit half-wave It has an arithmetic unit 40 for performing arithmetic operations on the generated signals and an addition processing unit 52 for adding the output signals of the arithmetic units 36, 40. Each of the arithmetic units 36 and 40 is configured to square the value of a given signal.

That is, the arithmetic unit 36 is configured to square the signal f ₁ (t) smaller than the upper half wave half level and multiply it by -1 to obtain -f ₁ (t) ² . . Further, the arithmetic unit 40 is configured to square a signal f ₂ (t) larger than the lower half wave half level to obtain f ₂ (t) ² .

FIG. 2 is a diagram showing an example of a signal that is given to or output from the component parts of the harmonic overtone generator 16. When a signal as shown in FIG. 2A is input to the overtone generating unit 16, the offset level adjusting unit 3
2 gives a predetermined offset, as shown in FIG.
Ofst is given, and a signal as shown in FIG. 2C is output from the offset level adjusting unit 32. Next, the upper limit half-wave unit 34 rectifies the signal output from the offset level adjusting unit 32 by the upper limit half-wave rectification and outputs only a signal smaller than zero level, while the lower limit half-wave unit 38 outputs this signal. Lower limit half-wave rectification, and output only signals greater than zero level. Therefore, from the upper limit half-wave portion 34 and the lower limit half-wave portion 38, respectively, FIG. 2 (d-1), (d-
A signal as shown in 2) is output.

Further, the arithmetic units 36 and 40 square the signals output from the upper limit half-wave unit 34 and the lower limit half-wave unit 38, respectively, as shown in FIGS. 2 (e-1) and 2 (e-2). Signals are output, and these are added by the addition processing unit 42 to obtain a signal as shown in FIG.
Through such processing, the positive component and the negative component of the signal become asymmetric, and as a result, in the harmonic overtone generation unit 16, the even-numbered harmonic overtone and the odd harmonic of the fundamental wave included in the signal output from the BPF 14 are generated. It is possible to obtain a signal to which the second harmonic is added.

The odd-order harmonic overtone generator 18 includes an upper limit half-wave section 44 for upper limit half-wave of the output signal from the BPF 14, an arithmetic section 46 for performing an arithmetic operation on the upper-limit half-wave signal, and the BPF 14.
There is a lower limit half-wave unit 48 for lower limit half-wave of the output signal from, a calculation unit 50 for calculating the lower half-wave signal, and an addition processing unit 52 for adding the output signals of the calculation units 46, 50. is doing. The calculation unit 46 squares a signal g ₁ (t) smaller than the upper half-wave half level and multiplies it by -1, and adds the signal and the original signal to obtain -g ₁ (t) ² + g ₁ ( t) is obtained. Further, the calculation unit 50 squares a signal g ₂ (t) larger than the lower half-wave level zero level, adds the squared signal and the original signal, and obtains g ₂ (t) ² + g ₂ (t). Is configured to get. Through such processing, the odd harmonic overtone generator 18 can obtain a signal to which the odd harmonic overtone of the fundamental wave included in the signal output from the BPF 14 is added.

The harmonic overtone control unit 20 includes an amplifying unit (AMP0) 54 for amplifying a signal given from the harmonic overtone generating unit 16, an amplifying unit (AMP1) 56 for amplifying a signal given by the odd harmonic overtone generating unit 18, and It has an addition processing unit 58 for adding the output signals of the amplification units 54 and 56. This amplifier 5
Reference numerals 4 and 56 are configured to amplify an input signal from an input device (not shown) based on a predetermined amplification factor respectively given.

The mixing section 24 is an amplification section (A) for amplifying a signal output from the overtone control section 20 and having the HPF 22 pass only a signal in a band higher than a predetermined band.
It has an MP2) 60, an amplification unit (AMP3) 62 for amplifying the original signal given to the input end, and an addition processing unit 64 for adding the output signals of the amplification units 60, 62. The amplification units 60 and 62 are configured to amplify an input signal based on a predetermined amplification factor given from an input device (not shown).

The operation of the harmonic overtone adding device thus configured will be described below.

For example, an original signal of a musical sound signal corresponding to a voice or a musical instrument sound input to a microphone is given to an amplifying section 12, and the amplifying section 12 amplifies the signal at a predetermined amplification rate.
It is given to the BPF 14. As mentioned above, BPF14
Is configured to pass only a component in a band of a predetermined range of the input musical tone signal. Therefore, by adjusting the band, the BPF 14 passes only the component corresponding to the fundamental wave of the original signal.

Next, the signal composed of the components corresponding to the fundamental wave is generated by the harmonic overtone generator 16 and the odd harmonic overtone generator 1.
Given to 8. As described above, the harmonic overtone generator 16 generates a signal including a component including an odd-order harmonic overtone and an even-order harmonic overtone, and the odd-order harmonic overtone generator 18 generates a signal.
A signal consisting of components containing only odd harmonics is generated.
For example, as shown in FIG. 3, when a signal consisting of a sine wave which is a fundamental wave of 1 kHz and 0.9 V _PP is given to the harmonic overtone generator 16, the spectrum of the given signal is shown in FIG. It will be something like. As a result of the above-mentioned processing in the harmonic overtone generator 16, a signal as shown in FIG. 5 is output from the harmonic overtone generator 16, and the spectrum of this signal becomes as shown in FIG. In FIG.
The component 601 corresponds to the component corresponding to the fundamental wave of 1 kHz. As understood from FIG. 6, the signal output from the harmonic overtone generation unit 16 includes a component corresponding to the fundamental wave and its harmonic component.

On the other hand, since the odd-order harmonic overtone generator 18 generates a signal including a component containing only the odd-order harmonic overtone, the signal shown in FIG. When the odd harmonic overtone generation unit 18
The signal output from is as shown in FIG. 7, and its spectrum includes signal components as shown in FIG. As in the case of FIG. 3, in FIG. 8, the component 801 corresponds to the frequency of the fundamental wave.

In this way, the signals generated by the harmonic overtone generator 16 and the odd harmonic overtone generator 18 are the harmonic overtone controller 2
Given to 0. Amplifiers 54 and 56 of the overtone control unit 20
Respectively amplify the signals based on the amplification factor given to the input device (from the figure). By changing the amplification factors applied to the amplifiers 54 and 56, respectively, it is possible to control the balance of the outputs of the harmonic overtone generating unit 16 and the odd harmonic overtone generating unit 18, and thus the balance between the even harmonic overtone and the odd harmonic overtone. Can be controlled. For example, a signal as shown in FIG. 5 is output from the multiple generator 16,
When a signal as shown in FIG. 7 is output from the odd harmonic overtone generator 18, the output ratio of the harmonic overtone generator 18 becomes 2, and the output ratio of the odd harmonic overtone generator becomes 8. When the amplification factors of the amplifiers 54 and 56 are determined, the overtone control unit 20
Outputs a signal as shown in FIG. 9, and its spectrum includes components as shown in FIG. As shown in FIG. 9, in this case, the waveform is distorted such that the slope in the vicinity of the zero level is relatively gentle, and the slope becomes steep when leaving the vicinity of the zero level, and the spectrum is as shown in FIG.
As shown in 0, the level of adjacent odd harmonics is
The level of the even harmonics sandwiched between them becomes small.

Since a direct current component may be generated in the process of the above-described processing, the output of the overtone control unit 20 is
Given to the HPF 22. The output signal of the HPF 22 is given to the mixing unit 24. The amplification unit 60 of the mixing unit 24 amplifies the signal output from the HPF 22 with a predetermined amplification factor given from an input device (not shown), and the amplification unit 62 converts the original signal of the musical tone signal into the input device. Amplification is performed at a predetermined amplification rate given by (not shown). By changing the respective amplification factors, it is possible to control the mixing ratio between the signal including the component to which the overtone is added and the original signal.

The output of the mixing section 24 is the amplification section (AM
The signal is amplified again by P4) 26, the output gain is adjusted, and output from the output end.

Through such processing, a signal including the original signal and a desired harmonic component of the fundamental wave of the original signal can be obtained from the output terminal.

According to the present embodiment, the harmonic overtone generating unit 16 generates a signal including an even-order harmonic overtone component and an odd-order harmonic overtone component, and the odd-order harmonic overtone generating unit 18 generates a signal including an odd-order harmonic overtone component. Are generated and these signals are mixed by the harmonic overtone control unit 20 by controlling the mixing ratio thereof. Therefore, by changing this ratio, a signal to which a desired overtone component is added can be obtained. It will be possible.

Further, by changing the offset to be given to the signal in the offset level adjusting section 32 of the overtone generating section 16, the components of the even-order overtone and the odd-order overtones contained in the signal generated by the overtone generating section 16 are changed. It is possible to change the ingredients.

Next, an overtone addition device according to another embodiment of the present invention will be described. FIG. 11 is a block diagram showing the configuration of this overtone addition device. As shown in FIG. 11, the harmonic overtone adding device uses a BPF 114 that passes only a predetermined band of a musical tone signal given from an input end and a signal output from the BPF 114 to obtain even-order harmonic components and odd-order harmonic components of a desired level. Overtone generation control that generates a signal containing overtone components
Section 120, a differential processing section 122 that performs differential processing on the output signal of the harmonic overtone generation control section 120, a first mixing section 124 that mixes the differentiated signal and the output signal from the BPF 114, and 1 mixing unit 124
A low-pass filter (LPF) 126 that allows only signal components lower than a predetermined band to pass from the output signal of, and a second mixing unit 128 that mixes the original signal given from the input end and the output signal from the LPF 126. Is equipped with.

The BPF 114 extracts the component corresponding to the fundamental wave of the overtone to be generated in the overtone adding device and outputs the signal composed of this frequency component, as in the above-described embodiment.

The overtone generation control section 120 provides an offset level adjusting section 1 for giving a predetermined offset given by an input device (not shown) to the output signal from the BPF 114.
32, the upper limit half-wave section 134 to the upper half waves of the output signal of the offset level adjusting section 132, a calculation unit 136 for amplifying the upper half-wave signal at a predetermined amplification factor, the output signal of the offset level adjusting unit 132 A lower limit half wave unit 138 for lower limit half wave, a calculation unit 140 for amplifying the lower limit half wave signal with a predetermined amplification factor, and an addition processing unit 142 for adding the signals of the amplification units 136, 140. There is.

FIG. 12 is a diagram showing an example of a signal that is given to or output from the component of the harmonic overtone generation control unit 120. When a signal as shown in FIG. 12A is given to the overtone generation control unit 120, it is given to an input device (not shown) by the offset level adjusting unit 132 as shown in FIG. 12B. A predetermined offset ofst is given according to the information provided, and FIG.
A signal as shown in is output from the offset level adjusting unit 132. In this way, the generated overtone component can be controlled by the offset given to the input signal. For example, when the offset ofst is zero, that is, when no offset is given, odd-numbered harmonic components are not generated and only even-order harmonic components are generated. On the contrary, when an offset is given, an odd harmonic component is also generated.

Next, the upper limit half-wave section 134 performs the upper limit half-wave rectification on the signal output from the offset level adjusting section 132 and outputs only a signal smaller than the zero level. On the other hand, the lower limit half-wave unit 138 rectifies the lower limit half-wave of this signal and outputs only a signal larger than the zero level. Therefore, the upper half-wave part 134 and the lower half-wave part 138 output signals as shown in (d-1) and (d-2) of FIG.

Furthermore, the signals output from the upper limit half-wave section 134 and the lower limit half-wave section 138 by the arithmetic units 136 and 140, respectively, based on the information given from the input device (not shown), respectively. It is multiplied by a predetermined scale factor. By this processing, the arithmetic units 136 and 140 output signals as shown in FIGS. 12 (e-1) and 12 (e-2). The signals output from the arithmetic units 136 and 140 are added by the addition processing unit 142, and the result is shown in FIG.
A signal as shown in is obtained. Here, the calculation unit 136,
Finally, the odd and even harmonic components are determined by the multiplication factors A and B when the multiplication is performed by 140. That is, by multiplying the multiplication factors A and B, the calculation unit 136,
As the difference between the absolute values of the signals output from 140 increases, the level of the overtone component that occurs increases, and as the difference between the absolute values decreases, the level of the overtone component that occurs increases. Get smaller.

Therefore, from the input device (not shown),
By changing the information given to the arithmetic unit 136, it becomes possible to adjust the level of the overtone.

The signal output from the overtone generation control unit 120 is given to the differentiation processing unit 122, and the differentiation processing unit 122
Differentiates the given signal, extracts the component corresponding to the fundamental wave and the component of the overtone from this signal, and outputs the signal including these components to the first mixing unit 124.

The first mixing section 124 includes an amplifier 150 for amplifying the signal output from the differentiation processing section 122,
An amplifying section 152 for amplifying a signal composed of a component including a fundamental wave output from the BPF 114, an amplifying section 150,
Addition processing unit 154 for adding the signals output from 152
And have. These amplification units 150 and 152 are configured to amplify an input signal based on a predetermined amplification factor given from an input device (not shown).

The second mixing section 128 includes the LPF 12
An amplifier 156 that amplifies the signal output from 6 and an amplification unit 15 that amplifies the original signal of the musical tone signal given to the input end.
8 and an addition processing unit 160 that adds the signals output from the amplification units 156 and 158. These amplifier 1
56 and 158 are configured to amplify an input signal from an input device (not shown) based on a predetermined amplification factor respectively given.

The operation of the overtone addition device thus configured will be described below.

For example, the original signal of the musical tone signal corresponding to the voice or musical instrument sound input to the microphone is given to the BPF 114. Similar to the case of the above-mentioned embodiment, the BPF1
Reference numeral 14 is configured to pass only a component in a band of a predetermined range of the inputted musical tone signal. Therefore, by adjusting the band, the BPF 114 passes only the component corresponding to the fundamental wave of the tone signal.

Next, the signal composed of the component corresponding to the fundamental wave is given to the overtone generation control section 120. As described above, in the harmonic overtone generation control unit 120, the offset level adjusting unit 132 adjusts the odd harmonic components by giving an offset to the input signal, and the arithmetic units 136 and 140 perform multiplication. The final multiplication factors A and B determine the final odd and even harmonic components. Therefore, it is possible to control the balance between the even-numbered harmonic overtones and the odd-numbered harmonic overtones by changing the offsets and the magnifications of the arithmetic units 136 and 140 described above.

Next, the signal output from the harmonic overtone generation control unit 120 is supplied to the first mixing unit 124 via the differentiation processing unit 122 and a signal composed of the fundamental wave,
The mixing is performed at a predetermined mixing ratio. Furthermore, the first
The signal output from the mixing section 124 of the
It is given to the 2nd mixing part 128 via 26.
The amplifying unit 156 of the second mixing unit 128 uses the LPF1
The signal output from 26 is amplified by a predetermined amplification factor given from an input device (not shown), and the amplification section 158 gives the original signal of the musical tone signal given from the input device (not shown). Amplify at a predetermined amplification rate. By changing the respective amplification factors, it is possible to control the mixing ratio between the signal including the component to which the overtone is added and the original signal.

In this way, the signal containing the original signal and the overtone component of the fundamental wave of the original signal is output from the output end.

According to this embodiment, the overtone generation control unit 120
Offset level adjusting unit 132 and calculating units 136, 1
Since the odd-numbered and even-order overtone components are controlled by the 40 and the addition processing unit 160 , it is possible to obtain a signal to which a desired overtone component is added. Therefore , the overtone addition device according to the present embodiment can be widely applied as an effector in karaoke and various electronic musical instruments.

The present invention is not limited to the above embodiments, but various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. It goes without saying that it is a thing.

In the present specification, the term "means" does not necessarily mean physical means, but also includes the case where the function of each means is realized by software.
Further, the function of one means may be realized by two or more physical means, or the functions of two or more means may be realized by one physical means.

[0050]

According to the present invention, the harmonic addition is performed by controlling the balance of the overtone components between the odd-order overtone and the even-order overtone as desired to add a signal having a specific overtone structure to the original signal. It becomes possible to provide a device.

[Brief description of drawings]

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

FIG. 2 is a diagram showing an example of a signal given to or output from a component of the harmonic overtone generator.

FIG. 3 is a diagram showing an example of an input signal.

FIG. 4 is a diagram showing a spectrum of the signal shown in FIG.

FIG. 5 is a diagram showing an example of an output signal from a harmonic overtone generator.

6 is a diagram showing a spectrum of the signal shown in FIG.

FIG. 7 is a diagram showing an example of a signal output from an odd harmonic overtone generating unit.

FIG. 8 is a diagram showing a spectrum of the signal shown in FIG. 7.

FIG. 9 is a diagram illustrating an example of an output signal from a harmonic overtone control unit.

FIG. 10 is a diagram showing a spectrum of the signal shown in FIG. 9.

FIG. 11 is a block diagram showing a configuration of an overtone addition device according to another embodiment of the present invention.

FIG. 12 is a diagram showing an example of a signal given to or output from a component of the harmonic overtone generation control unit 120.

[Explanation of symbols]

12 Amplifier 14 Bandpass filter (BPF) 16 overtone generator 18 Odd harmonic overtone generator 20th harmonic control 22 High-pass filter (HPF) 24 mixing department 32 Offset level adjuster 34 Upper half-wave section 36 Operation part 38 Lower limit half-wave section 40 arithmetic unit 42 Addition processing unit 44 Upper half-wave section 46 Operation part 48 lower limit half-wave section 50 arithmetic unit

Continuation of front page (56) Reference JP-A-57-54993 (JP, A) JP-A-56-113197 (JP, A) JP-A-6-95678 (JP, A) JP-A-5-232964 (JP , A) JP 5-127672 (JP, A) JP 1-219794 (JP, A) JP 63-155906 (JP, A) Jikho 47-19010 (JP, Y1) 3-504072 (JP, A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) G10H 1/00-7/12

Claims (3)

(57) [Claims] 1. A harmonic overtone adding device for generating a signal including a harmonic component from an input musical tone signal, and mixing and outputting the musical tone signal and the signal including the harmonic overtone component. From the predetermined wave including the fundamental wave of the tone signal.
A fundamental wave extracting means for extracting a range band signal, from the extracted signal in the fundamental wave extracting means, the group
A first overtone generating means for generating a signal containing an odd harmonic overtone component of the main wave; and a signal for generating a signal containing at least an even harmonic overtone component of the fundamental wave from the signal extracted by the fundamental wave extracting means . Second overtone generating means, a harmonic overtone mixing means for mixing the signal generated by the first overtone generating means and the signal generated by the second overtone generating means at a predetermined ratio.
A sound control means , a signal mixed by the harmonic overtone control means, and an output means for mixing and outputting the musical tone signal , wherein the first harmonic overtone generation means includes a signal extracted from the fundamental wave extraction means. , Zero
First half-wave rectifier that only passes signals smaller than the bell
Stage, the signal output from the first half-wave rectifying means, and the signal
Output the sum of the squared signal and the signal multiplied by -1
From the signal extracted by the first calculating means and the fundamental wave extracting means.
Second half-wave rectifier that only passes signals larger than the bell
Stage, the signal output from the second half-wave rectifying means, and the signal
Second computing means for outputting the sum of the signal and the signal squared, and the output signal of the first computing means and the output of the second computing means
An overtone addition device, comprising: an addition processing unit that adds a signal . 2. A harmonic component of an input musical tone signal
A signal containing the tone signal and the harmonic component.
A harmonic overtone adding device for outputting a mixed signal with a predetermined signal including a fundamental wave of the tone signal from the tone signal.
From the signal extracted by the fundamental wave extracting means for extracting the signal in the range band and the fundamental wave extracting means,
First harmonic that produces a signal containing odd harmonics of the main wave
From the sound generation means and the signal extracted by the fundamental wave extraction means,
Generates a signal containing at least even harmonic components of the main wave
Second overtone generating means, a signal generated by the first overtone generating means, and the second overtone generating means.
The signal generated by the sound generator is mixed at a predetermined ratio.
The tone control means, the signal mixed by the overtone control means, and the tone signal.
And an output means for mixing and outputting the item, the second harmonic generating means, the fundamental wave given off to the extracted signal in the extraction means
An offset providing means for providing a set, the offset is given by the offset providing means
Pass only signals below zero level from the signal
The third half-wave rectifying means and the signal output from the third half-wave rectifying means are squared.
An offset is given by the third computing means for outputting a signal multiplied by -1 and the offset giving means.
Only pass signals greater than zero level from the signal
The signal outputted from the fourth half-wave rectifying means and the fourth half-wave rectifying means is squared.
Fourth arithmetic means for outputting a signal, an output signal of the third arithmetic means and an output of the fourth arithmetic means
A second addition processing means for adding the signal and
Characteristic overtone addition device . 3. A harmonic overtone adding device for generating a signal including a harmonic component thereof from an input musical tone signal and mixing and outputting the musical tone signal and the signal including the harmonic component. From the predetermined wave including the fundamental wave of the tone signal.
A fundamental wave extracting unit that extracts a signal in a range band, an offset applying unit that adjusts the level of the signal extracted by the fundamental wave extracting unit, and a signal that is offset by the offset applying unit, and is smaller than zero level. A first half-wave rectifying unit that allows only a signal to pass through, and a signal output from the first half-wave rectifying unit that has a predetermined first
A first arithmetic unit that outputs a signal obtained by multiplying by a factor of 1, and a second half-wave rectifier that passes only a signal greater than zero level from the signal that has been offset by the offset assigning unit. Means for outputting the signal output from the second half-wave rectifying means to the first
The signal obtained by multiplying by a predetermined second magnification different from that of
A second arithmetic unit that outputs the signal, an addition processing unit that adds the output signal of the first arithmetic unit and the output signal of the second arithmetic unit, and the signal output from the addition processing unit is differentiated. Apply processing
Differentiation processing means , the signal output from the differentiation processing means, and the fundamental wave extraction
Output means for adding and outputting the signal output from the means
Harmonic adding device, characterized in that it comprises a and.