JP2907066B2 - Input device for sound quality adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input device of a sound quality adjusting device for adjusting the sound quality of a sound reproducing device.

[0002]

2. Description of the Related Art Conventionally, tone control (bus / bus)
Treble) and a sound reproducing device having a built-in sound quality adjusting device called a graphic equalizer have been developed. In recent years, a preset-type equalizer suitable for a specific program source has been developed.

[0003] A conventional sound quality adjusting device will be described below with reference to the drawings. FIG. 9 shows a configuration of a conventional sound quality adjusting device. 101 is an audio signal input means, 102 is a 10-element graphic equalizer, 10
3 is an amplifier, and 104 is a speaker.

[0004] The audio signal input by the audio signal input means 101 is adjusted in the gain of each frequency band by the graphic equalizer 102, and is reproduced by the speaker 104 through the amplifier 103. The listener listens to the graphic equalizer 102 so that the reproduced sound has the desired sound quality.
Thus, the gain of each frequency band is manually adjusted.

The graphic equalizer 102 is generally an analog circuit, but an IIR using a digital circuit.
Similar characteristics can be realized with a type filter or an FIR type filter.

As described above, the listener can adjust the sound quality by correcting the gain of each frequency band using the graphic equalizer. Also, the sound quality could be adjusted by using a sound quality adjusting device called a tone control instead of the graphic equalizer.

[0007]

However, in the above configuration, the sound quality of the reproduced sound can be changed by using a graphic equalizer or a tone control. In many cases, it was difficult to determine how and how much to adjust.

For example, if you want a soft sound quality,
In many cases, it is not known which frequency band should be adjusted and how much gain should be adjusted, and a considerable amount of time has been spent on the adjustment. This means that what the audience demands is a psychological expression (eg soft, powerful, clear, etc.)
On the other hand, in a conventional graphic equalizer or the like, a physical expression (for example, 500 Hz is emphasized by 3 dB,
This is because 4 kHz is 4 dB attenuation), and the correspondence between the two has not been clarified.

SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide an input device of a sound quality adjusting device capable of accurately and easily realizing a sound quality desired by a listener.

[0010]

[0011]

[0012]

[Means for Solving the Problems] In order to solve the above-mentioned problems
According to the present invention, a psychological category axis is obtained by ranking sound quality expression word pairs expressed by kansei words on a plurality of scales, the scale value is used as sound quality, and the amplitude frequency characteristics divided into a plurality of bands are physically obtained. When the characteristic is used, the sound quality input means inputs at least one kind of sound quality scale value or at least two or more kinds of sound quality scale values of a sound quality expression word pair that are uncorrelated with each other, and the sound quality input means inputs the sound quality scale value. A sound quality storage unit for storing a scale value of sound quality, a sound quality selecting means for selecting the stored sound quality, and a two-dimensional structure comprising at least one or more one-dimensional psychological category axes or two kinds of psychological category axes. small and plane, and the sound quality display means for displaying simultaneously in real time a measure value of the input sound at the sound quality input means, the physical characteristics for realizing the inputted sound quality Both has one or more sound and physical characteristics are calculated based on the regression equation which is related in the form of a linear combination, the structure provided with the correction characteristic display means for displaying the calculation result.

[0013]

[0014]

[0015]

Also, the present invention provides a sound quality expressed in terms of sensitivity.
Psychological information is obtained by ranking expression pairs on a multi-level scale.
The categorical axis, its scale value as sound quality, and multiple bands
When the amplitude-frequency characteristics divided into
And correction characteristic input means for inputting data for correcting the physical properties of the force signal, a correction characteristic storage unit that stores the inputted correction characteristic, control of setting the pre-Symbol input correction characteristic in the tone control apparatus Means and the data of the correction characteristics
At least one or more sound quality and physical characteristics are linear linear combinations
Sound quality calculating means for calculating a sound quality scale value using a multiple regression equation associated with a form, and at least one or more one-dimensional
Psychological category axis or two kinds of psychological category axes
And two-dimensional plane formed in, and has a structure in which and a sound quality display means for displaying the calculated quality of the scale values at the same time in real time the quality calculation unit.

[0017]

[0018]

[0019]

[0020]

[0021]

According to the present invention having the above-described structure, the listener does not need to control the physical characteristics itself when adjusting the sound quality, and can simply and easily input the desired sound quality to accurately and accurately adjust the sound quality. It can be realized instantly.

By storing the input sound quality in the storage unit, the sound quality realized in the past can be realized again by a simple operation.

Further, by displaying the correction characteristic for realizing the input sound quality, the effect relating to the sound quality adjustment can be enhanced with a visual synergistic effect.

Further, when controlling physical characteristics like a conventional graphic equalizer, a desired sound quality can be realized in a short time by calculating and displaying the sound quality at that time.

[0025]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a configuration diagram of a first embodiment of the present invention.

In FIG. 1, 11 is an audio signal input means, 12 is a sound quality adjusting device, 13 is an amplifier, 14 is a speaker, 15 is sound quality input means, 16 is sound quality display means, 17
Is a correction characteristic extracting means, and 18 is a control means.

The listener listens to the sound quality input means 15 while referring to the psychological category axis displayed on the sound quality display means 16.
Input the desired sound quality. At the same time, the input sound quality is displayed on the sound quality display means 16.

Here, as shown in FIG. 2, the psychological category axis is a scale axis that gives a score by a listener who evaluates the sound quality in a plurality of levels (seven levels in the figure) using a pair of sound quality expression words. It is. The input sound quality is a scale value on this scale axis. The scores in this case are given at equal intervals from 1 point to 7 points, but this score may be an ordinal scale.

Table 1 shows an example of a sound quality expression word pair.

[0030]

[Table 1]

As the psychological category axis, all of those shown in (Table 1) may be used, but among them, a pair of sound quality expression words having similar meanings may be put together to form one psychological category axis. This can be performed using, for example, a factor analysis method, which is one of statistical methods. The plurality of psychological category axes extracted using this factor analysis method are axes that are uncorrelated with each other.

FIG. 3 shows an example of the sound quality display means 16. In FIG. 3, reference numerals 41, 42 and 43 denote psychological category axes,
Reference numeral 4 indicates the position of the sound quality of the input sound. Here, three types of psychological category axes are displayed independently. It is assumed that 41 is a psychological category axis relating to sharpness, omission, and flashiness, 42 is a psychological category axis relating to richness and thickness, and 43 is a psychological category axis relating to beauty and balance. These three types of axes are obtained by applying a principal factor analysis method to the results of a sound quality evaluation experiment performed using the sound quality expression word pairs in (Table 1). It is. At this time, the input of the sound quality may be designated by a mouse, a joystick, a cursor key, or the like for each displayed psychological category axis, or may be input using a volume corresponding to each psychological category axis as shown in FIG. . In FIG. 4, reference numeral 51 denotes a volume for adjusting the tone quality on the psychological category axis relating to sharpness, omission, and fancyness, 52 denotes a volume for adjusting the tone quality on the psychological category axis relating to richness and thickness, and 53 denotes beauty and balance. This is the volume for adjusting the psychological category axis related to. In FIG. 3, the sound quality is 5
Points and richness are set to 2 points, and beauty is set to 6 points.

FIG. 5 shows another example of the sound quality display means 16. In FIG. 5, reference numerals 61 and 62 denote psychological category axes,
Reference numeral 3 indicates the position of the input sound quality. here,
The figure shows a two-dimensional plane composed of two types of psychological category axes and the position of sound quality input on the plane. It is assumed that the horizontal axis of 61 is, for example, a psychological category axis relating to sharpness, goodness of omission, and flashiness, and the vertical axis of 62 is a psychological category axis relating to richness and thickness. At this time, for example, the input of the sound quality is performed by designating the coordinates on the displayed two-dimensional plane with a mouse, a joystick, or the like. In FIG. 5, the sound quality is set to three points for sharpness and six points for richness.

As described above, the input sound quality is displayed in real time simultaneously with the plane constituted by the psychological category axis, so that the listener can input a desired sound quality with a simple operation.

As described above, the listener listens to the sound quality display means 1.
The desired sound quality is input using the sound quality input means 15 while referring to FIG. Then, a correction characteristic corresponding to the input sound quality is extracted by the correction characteristic extraction unit 17. This correction characteristic is extracted based on a multiple regression equation expressing the sound quality in the form of a linear linear combination with the amplitude frequency characteristic. For example, it is assumed that a multiple regression equation relating to richness is represented by (Equation 1).

[0036]

(Equation 1)

At this time, in order to make the richness 4 points,
It is sufficient to raise 125 Hz by 1 dB, lower 4 kHz by 1 dB, and lower 8 kHz by 1 dB. Various methods can be considered for the calculation method. In this case, a method of controlling the frequency band used in the multiple regression equation by the same gain is used.

As another method, there is a method of weighting based on a multiple regression coefficient or a correlation coefficient between each frequency band and sound quality (in this case, richness), and the like. These are methods for mainly controlling a frequency band that greatly affects sound quality. For example, a method of weighting with a multiple regression coefficient to obtain it will be described. It is assumed that the multiple regression equation regarding richness is expressed by (Equation 1). At this time, 125Hz, 4KH
The ratio of the multiple regression coefficients applied to the z, 8 KHz band is 2: 1:
Since it is 1, the level of each band is also changed in the same manner as the value of this ratio. In other words, in order to make richness 6 points,
What is necessary is to raise 125 Hz by 2 dB, lower 4 kHz by 1 dB, and lower 8 kHz by 1 dB. Similar considerations apply when weighting with a correlation coefficient.

As another example, it is assumed that a multiple regression equation relating to richness and sharpness is expressed as (Equation 2). This is to obtain sound quality from each physical characteristic (Equation 1),
This is an expression for obtaining physical characteristics from the sound quality of richness and clarity.

[0040]

(Equation 2)

The score of desired richness and sharpness is given by (Equation 2)
, The physical characteristics of each band can be obtained. The operation of (Expression 2) is easier than that of (Expression 1). Further, calculation results corresponding to a plurality of sound qualities may be stored in advance.

The correction characteristics extracted as described above are
The sound quality adjustment device 12 is set by the control means 18.
On the other hand, the signal input by the audio signal input means 11 is adjusted in sound quality by a correction characteristic in the sound quality adjusting device 12, and reproduced from the speaker 14 through the amplifier 13.

Next, a second embodiment of the present invention will be described with reference to the drawings. FIG. 6 is a configuration diagram of a second embodiment of the present invention. In FIG. 6, 11 is an audio signal input means, 12 is a sound quality adjusting device, 13 is an amplifier, 14
Is a speaker, 15 is a sound quality input means, 16 is a sound quality display means, 17 is a correction characteristic extracting means, 18 is a control means,
These configurations are exactly the same as in the first embodiment. This embodiment is different from the first embodiment in that a sound quality storage unit 71 and a sound quality selection unit 72 are provided.

Since the basic operation is the same as that of the first embodiment, the description of the same operation will be omitted, and the operation unique to this embodiment will be described.

The listener inputs desired sound quality in the same manner as in the method described in the first embodiment. Then, if necessary, the previewer stores the input sound quality in the sound quality storage unit 71. The sound quality storage unit 71 can store a plurality of sound qualities. Then, when the stored sound quality is selected by the sound quality selection means 72, a correction characteristic according to the sound quality is set in the sound quality adjustment device 12, and the sound quality is adjusted.

As described above, according to the present embodiment, a plurality of input sound qualities are stored and selected as necessary, so that the sound qualities realized in the past can be realized again by a simple operation. it can.

Next, a third embodiment of the present invention will be described with reference to the drawings. FIG. 7 is a configuration diagram of a third embodiment of the present invention. 7, 11 is an audio signal input means, 12 is a sound quality adjustment device, 13 is an amplifier, 14
Is a speaker, 15 is a sound quality input means, 16 is a sound quality display means, 17 is a correction characteristic extraction means, 18 is a control means, 71 is a sound quality storage unit, and 72 is a sound quality selection means. Is exactly the same as This embodiment is different from the second embodiment in that a correction characteristic display section 81 is provided.

Since the basic operation is the same as that of the second embodiment, the description of the same operation will be omitted, and the operation unique to this embodiment will be described.

The listener adjusts the sound quality in the same manner as in the first and second embodiments. At this time, the correction characteristic for realizing the input sound quality is displayed on the correction characteristic display means 81 in real time.

As described above, according to the present embodiment, the listener can visually confirm how the correction characteristic changes when the sound quality is input, so that the psychological effect on the sound quality adjustment can be improved. Can be enhanced.

Next, a fourth embodiment of the present invention will be described with reference to the drawings. FIG. 8 is a configuration diagram of a fourth embodiment of the present invention. In FIG. 8, reference numeral 11 denotes an audio signal input unit, 12 denotes a sound quality adjusting device, 13 denotes an amplifier, 14 denotes a speaker, and 18 denotes a control unit.
This is exactly the same as the embodiment. This embodiment is different from the first embodiment in that the correction characteristic input means 91 and the correction characteristic storage 9
Second, a correction characteristic selecting unit 93, a sound quality calculating unit 94, and a sound quality displaying unit 95 are provided.

Since the basic operation is the same as that of the first embodiment, the description of the same operation will be omitted, and the operation unique to this embodiment will be described.

The listener inputs the correction characteristics for adjusting the sound quality by using the correction characteristics input means 91. At this time, a gain value and a Q value of each frequency band are input as in a graphic equalizer of a conventional analog circuit, or a sound pressure frequency characteristic itself is input on a CRT using a mouse, a joystick, a cursor key, or the like. Then, the input correction characteristics are set in the sound quality adjustment device 12 by the control means 18. At this time, the sound quality calculating means 94 quantitatively calculates how the sound quality changes depending on the correction characteristics. Then, the calculation result is displayed on the sound quality display means 95.

On the other hand, the audio signal input by the audio signal input means 11 is adjusted in sound quality by the sound quality adjusting device 12 and reproduced by the speaker 14 through the amplifier 13.

Further, the previewer stores the input correction characteristic in the correction characteristic storage unit 92 as necessary. The correction characteristic storage section 92 can store a plurality of correction characteristics. Then, the stored correction characteristics are corrected by the correction characteristic selecting means 9.
When the selection is made in step 3, the correction characteristic is set in the sound quality adjustment device 12, and the sound quality is adjusted.

By the way, the sound quality calculating means 94 performs the calculation according to a quantitative correspondence formula between the sound quality and the physical characteristics.
The correspondence formula at this time is a multiple regression formula expressing the sound quality as a linear linear combination of physical characteristics, the sound quality is a scale value on the psychological category axis, and the physical characteristics are divided into a plurality of frequency bands. This is the amplitude frequency characteristic obtained.

For example, it is assumed that the multiple regression equation relating to the sense of power is represented by (Equation 3), and the multiple regression equation relating to sharpness is represented by (Equation 4). Here, the physical characteristics used in the formulas will be described using only the level difference from the average sound pressure level.

[0058]

(Equation 3)

[0059]

(Equation 4)

The value of the level difference in each frequency band is, for example, -5 dB in a 64 Hz band, +2 dB in a 125 Hz band, +3 dB in a 250 Hz band, +2 dB in a 500 Hz band, -2 dB in a 1 kHz band, and 2 kHz.
-1dB in the band of + 2dB, 8KH in the band of 4KHz
It is assumed that the band is +2 dB in the band of z and 0 dB in the band of 16 KHz. Using the values of the physical characteristics, a scale value relating to the sense of power and sharpness is calculated by (Equation 3) and (Equation 4). As a result of the calculation, the feeling of power is 2.5 points and the sharpness is 4.0 points. The result of this calculation is displayed on the sound quality display means 95. At this time, the calculation results are displayed on the psychological category axis, for example, as shown in FIGS.

As described above, according to the present embodiment, the listener can visually confirm how the sound quality has changed by changing the physical characteristics. The desired sound quality can be easily realized.

In the above description, the average sound pressure level is used as the reference level of the frequency characteristic used in the multiple regression equation. However, the sound pressure level at a certain value, the maximum level, the minimum level, A level based on a correction curve such as the A characteristic may be used.

The center frequency of each frequency band is set at one octave interval, but the present invention is not limited to this.
It may be a half octave, two octaves, or the like.

The physical characteristics used in the multiple regression equation may be physical characteristics other than sound pressure frequency characteristics, such as distortion characteristics, phase characteristics, and transient characteristics.

[0065]

As described above, according to the input device of the sound quality adjusting device of the present invention, the listener does not need to control the physical characteristics of the sound when adjusting the desired sound quality, and can obtain the desired sound quality. The sound quality can be accurately and immediately realized by a simple operation of only inputting on the display screen.

By storing the input sound quality in the sound quality storage section, the sound quality realized in the past can be realized again by a simple operation.

Further, by displaying the correction characteristics for realizing the input sound quality on the correction characteristic display means, it is possible to enhance the effect on sound quality adjustment with a visual synergistic effect.

When controlling the physical characteristics as in a conventional graphic equalizer, the desired sound quality can be realized in a short time by calculating the sound quality at that time and displaying it in real time.

[Brief description of the drawings]

FIG. 1 is a configuration diagram of a sound quality adjusting device according to a first embodiment of the present invention.

FIG. 2 is a diagram showing an example of a psychological category.

FIG. 3 is a diagram showing a display example of sound quality display means.

FIG. 4 is a diagram illustrating an example of sound quality input means.

FIG. 5 is a diagram showing another display example of the sound quality display means.

FIG. 6 is a configuration diagram of a sound quality adjustment device according to a second embodiment of the present invention.

FIG. 7 is a configuration diagram of a sound quality adjustment device according to a third embodiment of the present invention.

FIG. 8 is a configuration diagram of a sound quality adjustment device according to a fourth embodiment of the present invention.

FIG. 9 is a configuration diagram of a conventional sound quality adjustment device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 11 Audio signal input means 12 Sound quality adjustment device 13 Amplifier 14 Speaker 15 Sound quality input means 16 Sound quality display means 17 Correction characteristic extraction means 18 Control means 71 Sound quality storage part 72 Sound quality selection means 81 Correction characteristic display part 91 Correction characteristic input means 92 Correction characteristics Storage unit 93 Correction characteristic selection means 94 Sound quality calculation means 95 Sound quality display means

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-4-20111 (JP, A) JP-A-3-19513 (JP, A) JP-A-2-303210 (JP, A) JP-A-1- 319312 (JP, A) JP-A-61-140995 (JP, A) JP-A-63-113498 (JP, A) JP-A-3-282592 (JP, A) JP-A-8-298419 (JP, A) "All about sound quality for audio and music" published by Seibundo Shinkosha Co., Ltd. Co-authored by Mamoru Kuikawa, Kenjiro Endo, and Norio Mogi, published newly on July 14, 1981. (1-3-1: Composition and analysis of sound quality, 1-6: Expression terms of sound quality, 1-7: Seven attributes of sound quality and analysis method thereof) (58) Fields investigated (Int. Cl. ⁶ , (DB name) H03G 5/02 H03G 5/16 G10H 1/00

Claims (2)

(57) [Claims] 1. A psychological category axis in which a sound quality expression word pair expressed by a kansei word is ranked on a plurality of scales, the scale value is a sound quality, and an amplitude frequency characteristic divided into a plurality of bands is a physical category. When the characteristic is used, the sound quality input means inputs at least one kind of sound quality scale value or at least two or more kinds of sound quality scale values of a sound quality expression word pair that are uncorrelated with each other; A sound quality storage unit for storing a scale value of sound quality, a sound quality selecting means for selecting the stored sound quality, and a two-dimensional structure comprising at least one or more one-dimensional psychological category axes or two kinds of psychological category axes. a plane, a sound quality display means for displaying simultaneously in real time a measure value of the input sound at the sound quality input means, the physical characteristics for realizing the inputted sound quality less of At least one sound quality and physical characteristics are calculated based on a multiple regression equation associated in the form of a linear linear combination, and correction characteristic display means for displaying the calculation result is provided. Input device of the adjustment device. 2. A psychological category axis in which a sound quality expression word pair expressed by a kansei word is ranked on a plurality of scales, the scale value is a sound quality, and an amplitude frequency characteristic divided into a plurality of bands is physical. When the characteristic is used, a correction characteristic input means for inputting data for correcting the physical characteristic of the input signal, a correction characteristic storage unit for storing the input correction characteristic, and a sound quality adjustment device for storing the input correction characteristic And sound quality calculating means for calculating a sound quality scale value using a multiple regression equation in which at least one or more sound qualities and physical characteristics are related in the form of a linear linear combination from the correction characteristic data. At least one or more one-dimensional psychological category axes or a two-dimensional plane composed of two kinds of psychological category axes and the sound quality scale value calculated by the sound quality calculating means are simultaneously rewritten. Input device tone control apparatus characterized by comprising a sound quality display means for displaying in-time.