Professional audio equipment should be equipped. Sound equipment is an important foundation for ensuring stage sound effects, which directly affects the success or failure of stage art presentation. The stage sound system is composed of signal source equipment, signal processing equipment, power amplifiers, speakers, and other equipment connected. Stage performances have many specific technical requirements for sound debugging, speaker placement, and system installation. This requires the tuner to not only master the use of sound equipment, but also master certain tuning skills, through their own hearing and understanding of the sound source, Adjust audio equipment and process audio signals to achieve true audio reproduction. It can be said that the configuration and debugging of audio equipment are important foundations for the blooming of stage art.
In terms of beautifying and embellishing the voice, we can use the four section equalizer in the input channel above the Mixing console to process the voice frequency to improve the artistic expression of the voice. According to the introduction of the German Music Research Institute, the four band equalizer in the mixer is divided into four frequency bands:
6-16 kHz. Affects the expressive and analytical power of timbre; Secondly, MID treble. 600-6000 Hz, affecting the brightness and clarity of the sound; Thirdly, MID treble. 200-600 Hz, affecting timbre, impact, and firmness; Fourth, bass. 20-200 Hz, affecting the mixed thickness and fullness of the timbre.
If the high-frequency frequency is too weak, its timbre becomes rich in color and charm; If the high-frequency frequency is too strong, the sound will become sharp, hoarse, and harsh. If the frequency in the middle frequency band is too weak, the sound will become dim and hazy; If the frequency in the mid range is too strong, its tone will become dull. If the frequency in the mid to low frequency range is too weak, the timbre will become empty and powerless; If the frequency in the mid to low frequency range is too strong, the tone will become stiff and lose vitality. If the frequency in the low frequency range is too weak, the sound will become thin and pale; If the low-frequency band is too strong, the sound will become cloudy and unclear.
To make the sound beautiful, it is necessary to have rich and layered overtones, and make the song sound beautiful, so that the audience can hear it pleasantly. Excessive bass can make the sound cloudy and unclear; Excessive treble can cause sharp and harsh sounds. After upgrading a certain frequency band, the impact of other frequency bands should also be considered, and the overall clarity and fullness of the song should be considered.
论人声、歌声，还是乐器的声音，它们都不是一个单音，而是一个复合音，也就是由声音的基音和一系列的泛音所构成。这些泛音都是基音频率的位数，物理学中称其为分音，电声学中称其为谐波，音乐中称泛音。它对音色的特性有非常重要的影响。这些泛音的数量和泛音幅茺的不同构成音色的频率特性曲线。这条曲线就体现了音色的表现力。例如，钢琴的低音频率是 27.5赫兹，高音频率是4186赫兹，而钢琴有10多个泛音，它的高频可达 10~20千赫兹，一般可测到 16 个泛音或 24 个泛音。这些泛音可分为低频泛音、中频泛音和高频泛音。如果低频泛音的幅度较强，音色就表现得混厚;中频泛音的幅度比较强，音色就表现得圆润、自然、和谐;高频泛音的幅度比较强，音色就表现得明亮、清透、解析力强。
In terms of human voice, singing voice, or musical instrument sound, they are not a single tone, but a composite tone, which is composed of the fundamental tone of the sound and a series of overtones. These overtones are the digits of the fundamental frequency, referred to as partials in physics, harmonics in electroacoustics, and overtones in music. It has a very important impact on the characteristics of timbre. The number and amplitude of these overtones form the frequency characteristic curve of the timbre. This curve reflects the expressive power of timbre. For example, the bass frequency of a piano is 27.5 Hz, the treble frequency is 4186 Hz, and the piano has more than 10 overtones, with a high frequency of 10-20 kHz. Generally, 16 overtones or 24 overtones can be measured. These overtones can be divided into low-frequency overtones, intermediate overtones, and high-frequency overtones. If the amplitude of low-frequency overtones is strong, the timbre will appear mixed and thick; The amplitude of mid frequency overtones is relatively strong, resulting in a rounded, natural, and harmonious tone; The amplitude of high-frequency overtones is relatively strong, resulting in a bright, clear, and analytical tone.
Noise refers to the sound emitted from the speaker that is unrelated to the performance and the audience does not want to hear. The appearance of noise during a performance will greatly affect the quality of the performance, and in severe cases, it can also hinder the normal progress of the performance.
Generally speaking, communication sound is generated due to the aging or reduced capacitance of the filtering capacitor components of audio equipment in the sound reinforcement system. At the same time, damage or poor contact of the plug-in connecting the audio device may cause low-frequency noise. In order to avoid the generation of such noise, the equipment should be regularly inspected and maintained in order to promptly troubleshoot. What cannot be ruled out at present is the inherent background noise of audio devices in the sound reinforcement system, and we can only find ways to reduce it. This requires considering devices with higher signal-to-noise when selecting audio devices, and noise gates can also be used in sound reinforcement systems. The controllable silicon in the dimming device can also cause interference to the audio device, especially when the dimming is pressed, the controllable silicon will produce high-order harmonic interference to the audio device. To solve this interference, different transformers can be used to power the lighting equipment and audio equipment separately. The coupling through the internal resistance of the transformer can be cut off, and the power supply line from the silicon cabinet to the lighting fixtures can be shielded to reduce electromagnetic interference from the power supply line through the air.
Sound effects are an important means of expression in stage art, and audiences in theaters not only watch with their eyes, but also listen with their ears. Sound effects are auditory embellishments and another artistic means of assisting performance. In this sense, sound effects are another language means in art. The comprehensive effect of sound effects is to integrate various parts of the stage with sound properties, establish a complete sound image, and incorporate it into the overall image of the stage atmosphere, so that the audience can obtain a perceptible three-dimensional image.
This article is provided by Shandong Stage Audio, and our website is: https://www.wenguangzhineng.com We will provide you with wholehearted enthusiasm and welcome your visit!