For example, the Diaoyutai is the head of the friendly country, the Ziguan Pavilion in Zhongnanhai is the head of the central government, the small hall is the performance of international friends, and the performances are political performances. The first important task of such a performance is to guard the audio equipment. Even if you eat, you can't leave the machine. If you check the equipment, if the output of the plug-in board, power plug, audio input peripheral, and input patch cord are not in good contact, The accident occurred and had a major impact on the performance. Therefore, this kind of performance should pay special attention and pay more attention to it. The specific operation steps are divided into the following points. 1. Adjustment of the sound field The position of the speaker should be the intersection of the heads or the heads, so that the position of the head is the best sound area. The sound effects of the back row are considered second. 2. Volume It is necessary to use the loudness of the head or head position as a guideline. Adjust the output level of the mixer. After debugging, you should ask the leader and the director to listen and choose the most appropriate loudness. 3. The microphone is not allowed to have a mute In the performance, there are usually different styles of cultural programs, using a lot of microphones. Therefore, it is required that no microphones should be missed during the performance to avoid losing the sound and affecting the sound performance of the overall performance. 4. Sound feedback is not allowed During the entire performance of the literary performance, acoustic feedback is absolutely allowed to cause whistling. If the howling is likely to be considered a political accident, the spirit of the sound engineer must be highly concentrated, monitoring the sound reinforcement at each moment. 5. It is not allowed to have a "click" sound due to poor contact between the connector and the plug connector. During the whole performance, the actors are not allowed to watch the performances on the stage near the audio equipment, and no one is allowed to touch the audio equipment and the various connecting lines and plug connectors to avoid the bad connection of the plug wires. Artistic performance The literary performance mainly emphasizes the artistry, so the sound engineer must mobilize all artistic cells and artistic feelings. The sound engineer is the first important task to ensure the quality of the sound, so the tuning skills of such performances need to mobilize the sound engineer's full understanding and feeling of music. The level of tuning of the artistic performance represents the specific operation of a sound engineer's "real kungfu" from the following aspects. Divided into the following points. 1. Tuning of the tone The specific adjustment steps are divided into 4 steps: (1) Low-pitched area: Within the range of 20-200 Hz, the sound can have a full, rich tone. (2) Mid-low range: In the range of 200--600 Hz, it can make the sound have a solid and strong tone. (3) Middle and high range: within the range of 600 Hz to 6 kHz, the sound can be bright, clear and transparent. (4) High-pitched area: This sound zone is the sound zone of high-frequency overtones in the timbre structure, and is also a sound zone with a very heavy timbre structure. Therefore, it is a sound zone with timbre expressive power and is a sound zone with individuality. The high-pitched area is within the range of 6-16 kHz (or 20 kHz), which gives the sound a sharp, "golden splash" feel. 2. Sound field adjustment Mainly to adjust the frequency characteristic curve of the sound field sound equalizer. General artistic performances are mostly performed in regular theaters. The architectural structure of the theater has a good acoustic design factor. For example, the sloping roof above the stage, the wall skirt on the three sides of the stage and the reflecting surface of the roof, and the auditorium in the form of a slope. These scientific and reasonable building structures have a good propagating effect on sound waves, so that the audience can get good listening effects at any position. In this way, during the actual performance of the theater, the audience can hear enough loudness without too much power. As long as the sound engineer passes the 2*31-band equalizer, the frequency characteristic curve of the sound field can be adjusted to be smoother. 3. Reverberation effect adjustment The reverb effect should be handled properly, not too strong reverb sound effects. Because the average professional singer has been trained in good vocalization, the vocal, voicing, and resonance of the singer are all at a relatively high level. At this time, the reverberation effect should be adjusted to have a feeling of nothingness, in order to maintain the uniqueness of the singer. Tone style. The tuning details of various styles of artistic performances in artistic performances can be discussed separately later. Political performance Artistic performance Entertaining performance Dance halls, night clubs, parties, etc. are all such entertaining performances. In the tuning process of this kind of performance, the sound engineer can exaggerate the sound quality of the sound, and modify the sound to make the sound achieve a large exaggeration effect. 1. Modification of frequency characteristics When the frequency characteristics are modified, the tone style may be exaggerated according to the sound engineer's understanding of the tone structure. The specific operation can increase the attenuation or attenuation amplitude of different frequencies to exaggerate some processing, so that the sound is more personalized, so that the color of the sound can be rich and enhance the expressive power of the sound. 2. Reverberation time can be lengthened appropriately When people appreciate music, they have an imaginative space for the emotions of the timbre, making people's associations more enriched with changes, resulting in romantic and colorful colors. By adjusting the reverb effect, you can increase the aesthetics of the sound. For example, the vocal sound can be made thicker after the reverberation process, and the timbre is stretched, and the overtones are also rich, which increases the expressive power of the timbre. 3. The ratio of reverberation effect processing sound and human voice can be increased This kind of operation can make people clearly feel the beauty of electro-acoustic processing, enrich the overtone expression of the timbre, and enhance the deep expression of emotion. 4. Can perform multi-mode reverb effect processing The reverberation effect of different modes can be selected to achieve a variety of different timbre feelings, so that the timbre of the timbre is rich and colorful, and the timbre feeling experience of various sound fields can be obtained. The processing modes of the specific reverb effect include: hall mode, metal plate mode, tunnel mode, and room mode. After selecting a reverberation mode, the reverberation plus delay processing method can be adopted, and then the specific value is selected according to the environment of the sound field, so that the singing voice obtains an obvious reverberation sound feeling. There is a certain delay in the reverberation sound, and the reverberation sound is more intense in the auditory sense. The singer will feel more relaxed and feel very effortless. 5. Modification of reverberation frequency When the sound effects are processed in the dance hall, the processing range of the reverberation sound is generally large, so the frequency should be properly repaired. For example, in the low frequency range, an appropriate amount of attenuation can be performed, so that the reverberation sound is not turbid and affects the clarity and brightness of the singing voice, that is, to avoid affecting the expressive power of the sound. In this way, the singing of an ordinary singer will also be repaired. In addition, the tuning rules for entertaining performances have the following characteristics in addition to the exaggerated art processing techniques: Flexibility: The singer can not only perform passionate singing in the performance area of ​​the stage, but also sing on two different occasions, on stage and under the stage, so that the distance between the actor and the audience can be brought closer, and the actor and the audience can feel closer. Harmony. Diversity: Actors can invite the audience to sing together. Sometimes some enthusiastic old audiences will invite intermittent sound engineers to introduce them, so the sound engineer should also understand the actor's feelings. This is not a small supplement to the tuning skills. Outside the work." Entertainment show Public welfare performances (or open-air performances) For open-air performances, its sound field processing is very difficult. Because there are no ceilings, sloping roofs, wall skirts and side walls in front of the stage for open-air performances. The sound of the sound source will never return, so the sound function is extremely depleted. In this way, a powerful power and a horn speaker with good directivity are needed to send the sound to a distant place and spread it. Therefore, the open-air performances have the following operational requirements in terms of technology. 1. Audio equipment must have sufficient power rating The sound field of the open stage has no reflected sound, and the energy loss of the sound wave is extremely great. Therefore, the power amplifier and the speaker and the middle and high-pitched horns must have sufficient power to meet the technical requirements of outdoor art performances. The rated power used in general open-air performances is 3-10 times of the rated power of the theater performances, so that the basic requirements of the outdoor art performance sound field can be achieved. 2. The sound equipment must have sufficient penetration Open-air performances generally focus on singing and music, so the sound quality of the midrange, mid-high and high-range ranges is very important. This requires a midrange horn that performs well for the midrange or a speaker that performs well for the midrange. There is also a high-pitched horn that performs well in the high-pitched area, or a speaker with a good high-pitched horn. The penetrating power of this device is very strong, and the sound wave radiation distance is very long, which can reach the position of the backcourt auditorium and meet the requirements of the whole sound pressure level, so that the whole audience position can reach sufficient loudness, so that the rear audience You can also enjoy high fidelity, high definition and high level of song singing art. 3. Speaker hoisting or overhead speaker or horn It is not reasonable to put all the speakers in the open-air performances on both sides of the stage. Because the sound source position of the speaker is low, the sound wave can be transmitted to the back of the whole field through the audience. Then, after many people, many human bodies, clothes, hair, etc. are strong sound-absorbing objects, people will A large part of the sound energy is attracted, and the energy of the sound wave is greatly depleted when the sound wave is transmitted to the back field. This phenomenon is called "grazing sound absorption", which means that the energy of sound waves is captured by objects such as the human body in the audience. In order to avoid this phenomenon, the sound engineer should hoist or raise the midrange speakers and tweeters at a certain height, so that the sound source will directly send eight to the rear area of ​​the open sound field through the space, thus reducing the sound. Loss of function. As long as the radiation angle of the speaker and horn is adjusted, the sound field coverage area will be evenly distributed, so that the front and rear rows of the audience can reach the ideal loudness, and the audience can hear the satisfactory sound effect. 4. Sound system line protection Most of the open-air performances are staged on a temporary basis. Therefore, the microphone signal line, signal transmission line and speaker line of the sound system are protected by a cover plate at the aisle due to the large space and long lines, so as to avoid being smashed and stepped on. Signal lines in other locations should also be glued with tape and tape, and fixed and safely handled to avoid line faults caused by people's kicks, thus ensuring the smooth transmission of signals. 5. Power supply security protection In the process of open-air cultural performances, the power supply must have sufficient safety guarantees, and it is impossible to cause turmoil and chaos in the audience due to power outages and power outages. Therefore, the sound engineer should keep in touch with the local on-site duty electrician. Once the power supply is turned off, power is cut off, power is cut off, etc., the electrician can be quickly contacted and processed in time. In the case of a diesel generator backup power supply, it is also necessary to keep in touch with the driver who manages the generator car. Once the power supply fails, the diesel generator can be started to supply power at any time to ensure the smooth performance of the performance. 6. Keep in touch with relevant parties at any time During the open-air performances, the sound engineer should keep in touch with the stage supervisor, the host and the director. Once you have performed all kinds of unexpected events, you can promptly and quickly carry out urgent and reasonable emergency measures to ensure smooth and satisfactory completion of the performance tasks. Therefore, the sound engineer must remember: for open-air performances, the safety of various equipment is the most important. Headphone Cover,Earbuds Cover,Earphone Cover,Headset Covers Nantong Boxin Electronic Technology Co., Ltd. , https://www.bosencontrols.com
Political performance