EQ parameter settings

Recently I have designed a new EQ module. I currently use band-pass to implement it. The filter is similar. Now I want to increase or decrease the values of different frequency domains, so I need to create a different style, the corresponding weighted curve, that is, a constant table, is displayed on the Internet.

Http://www.rd3721.com/bbs/dispbbs.asp? Boardid = 11 & id = 7488

 

 

1.<31Hz, 39Hz
The frequency is dominated by the voice and bass, which is hard to hear and can be ignored. The effect of the benefit increase value is not obvious. Some tutorials show that the area near the frequency point 39hz is characterized by a dull sound, which I have never heard or understood.

2. 50Hz, 62Hz If the increase value of these two frequency points is greater than 15 dB, there is a weak effect on the space sense of the bass, mainly due to slight harmonic resonance, positive gain, and negative growth gain. My personal experience is that the voice is a little low when the increase is greatly increasing. 3.80Hz, 100Hz, 125Hz, 200Hz
These four frequency points are near the main baseline of the bass, which is closely related to the sound mixing of the bass. Generally, this frequency point is full and the tone is thick. On the contrary, the tone is pale and powerless. However, if the tone is too strong, there will often be a low-frequency resonance sound, and there will be a "same sound roar" of "Longlong". Some people will regard it as a "strong sense of attention ", especially around Hz, it is particularly obvious that there is even a drum-like resonance sound. In short, it gives people a feeling of discomfort. If it is not the voice of rock wind, it is recommended not to significantly increase the positive gain. 4.250Hz, 350Hz, 420Hz, 500Hz

These four frequency points are closely related to the intensity of the subwoofer. They are the main audio area of the subwoofer. Therefore, you must be careful when adjusting the gain. If the gain is positive, there will be disturbing buzz, which makes people feel bored. It is obvious at 250Hz that the positive gain is like a cold nose, if the nose voice is heavy, negative gain can be considered near the frequency point.

5. 640Hz, 800Hz, 1 kHz
These three frequency points are the main audio areas, which have a certain relationship with the openness of the sound, and also with the turbidity of the hearing. The positive gain is clear and narrow, this is what we often call the "throat". It should be said that the appropriate throat sound can increase the growth rate and sound sensitivity. However, if it passes through, it will make people feel unnatural. In terms of the voice of men and women, the gain near these frequency points should be very careful. In the tone theory, the-Hz frequency is called "Dangerous frequency", which means to be used with caution; the negative gain is turbid and open, however, if it is too old, it will seem loose and powerless. The improvement of 800Hz and 1 kHz is the main means of phone sound simulation. 1.3 kHz, 1.6 kHz, 2 kHz
These three frequency points are the main audio area of the high-pitched voice, while the male voice is slightly more accurate. It is related to the hardness of the sound (especially the neutral sound. The negative gain is relatively soothing, while the positive gain is relatively compact. My personal experience is also related to the brightness of the sound in the audio center near 1.3khz. An appropriate improvement can increase the brightness of the sound, but it is usually not more than 3.5db (this value is purely personal experience, for reference only. 7. 2.5 kHz, 3.2 kHz, 4 kHz
these three frequencies are related to the sharpness of voice, that is, the sound penetrating force. In comparison with other frequencies, these three frequencies are most closely related to the sound field during sound mixing. Acoustic studies show that the resonance frequency of the human ear cavity is mainly between 1 kHz and 4 kHz, so the human ear is very sensitive to this frequency. Therefore, for male and female voices ~ These frequency points between 4 kHz are not suitable for attenuation. Because of its lack and weakening, the sound field will be far away from the sound field, there will be a lack of stereoscopy during sound mixing, and the voice is also relatively vague. Of course, it cannot be too strong. Otherwise, it is easy to generate a homophonic.
in my personal experience, 4 kHz is a particularly critical frequency, with the most significant impact on sound sharpness. If the intensity is too high, there will be obvious tooth sounds, often the fundamental frequency of female sound. For rock music mixing, try to increase the sharpness of voice.

8. 5 kHz, 6.4 kHz, 8 kHz
These three frequency points are the main audio area of the high-pitched voice. The male voice is slightly displayed as a high-pitched voice. The frequency points are closely related to the sound clarity, which mainly affects the definition and brightness of the high-pitched voice, the appropriate Domain value can make the sound color sound crisp and sweet. If the gain is insufficient, the human voice sounds dull. If the gain is too much, the human voice becomes sharp, and even the sound and the tooth sounds appear.9. 10 kHz, 13 kHz, 16 kHz, 20 kHz
In fact, when the frequency is above 8 kHz, the voice is very slim, and we do not advocate the improvement, because the excessive improvement will make people feel the sound is sharp, hair Hair, if this part of the tweeting is indeed lacking, we can use bbe's high-pitched excitation to achieve this. The harmonic wave will not damage the overall auditory perception.

10. 20 kHz
This is ultrasound, which is invisible to human ears. You don't need to tune it unless you have a special function.

Among the above frequency points, the most important and key frequency points, in the 10-frequency band, 80, 200, 250, 400, 800, 1.2 K, 2.5 k, 4 K, 6.4 K, and 16 kHz are the most important factors, subwoofer purity, subwoofer thickness, nose sound, low intensity, sound openness, sound brightness, sound field distance, sound sharpness, sound definition, high-pitched aesthetic (4 K, K) tooth tone adjustment, female voice is now 4 ~ 5 kHz, 6 to 5 more male voices ~ 7 kHz). The most important factor for the 6-band consideration is 80, 250, 800, 1.2 K, 4 K, and 6.4 kHz. The significance of the voice adjustment is consistent with that mentioned above. Additional instructions
First, there is a significant difference between male voice and female voice within Hz. Acoustic Research shows that the difference between the two is about 18 dB at around 70Hz, and above Hz, the two are closer to each other. Female voice is slightly higher in the middle band; male voice is slightly higher in the high frequency band. You can refer to this difference when performing the results.

The second is to take care of the frequency segment. Acoustic Research shows that the most obvious frequency band of human voice is Hz ~ 800Hz, so be careful when tuning the increase value for this interval.

9. 10 kHz, 13 kHz, 16 kHz, 20 kHz
In fact, when the frequency is above 8 kHz, the voice is very slim, and we do not advocate the improvement, because the excessive improvement will make people feel the sound is sharp, hair Hair, if this part of the tweeting is indeed lacking, we can use bbe's high-pitched excitation to achieve this. The harmonic wave will not damage the overall auditory perception.

10. 20 kHz
This is ultrasound, which is invisible to human ears. You don't need to tune it unless you have a special function.

Among the above frequency points, the most important and key frequency points, in the 10-frequency band, 80, 200, 250, 400, 800, 1.2 K, 2.5 k, 4 K, 6.4 K, and 16 kHz are the most important factors, subwoofer purity, subwoofer thickness, nose sound, low intensity, sound openness, sound brightness, sound field distance, sound sharpness, sound definition, high-pitched aesthetic (4 K, K) tooth tone adjustment, female voice is now 4 ~ 5 kHz, 6 to 5 more male voices ~ 7 kHz). The most important factor for the 6-band consideration is 80, 250, 800, 1.2 K, 4 K, and 6.4 kHz. The significance of the voice adjustment is consistent with that mentioned above. 

Additional instructions
First, there is a significant difference between male voice and female voice within Hz. Acoustic Research shows that the difference between the two is about 18 dB at around 70Hz, and above Hz, the two are closer to each other. Female voice is slightly higher in the middle band; male voice is slightly higher in the high frequency band. You can refer to this difference when performing the results.

the second is to treat the frequency segment with caution. Acoustic Research shows that, the most obvious frequency of voice is Hz ~ 800Hz, so be careful when tuning the increase value for this interval.