1, the distance between the actor and the microphone The distance between the actor and the microphone can be divided into three types, mainly for close distance, medium distance and long distance.
1) The close-range pickup microphone and the lip-shaped distance are 1~5cm, which is suitable for the speakers of low-pitched voices and the singers of popular songs. Close-range pickup is best suited for the voice pickup of the bass tone moderator. The sound is characterized by a strong sense of reality and intimacy. Because the sound source and the microphone are very close, it is an absolute direct sound, so the sound is pure and the definition is strong.
Requirements for equalization of speech:
100Hz~200Hz attenuation is 3~6dB, because there is a near-talk effect;
200~300Hz increases 3~6dB, which is the basic range of language;
1~2kHz boosts 3~6dB, increases brightness and improves clarity;
Attenuation of 3dB above 8kHz reduces the high frequency noise because the high frequency overtone of the speech is less than the singing voice.
Without the effects, the host sounds a sense of realism and intimacy.
2) The distance between the mid-range pickup microphone and the sound source is 5~10cm, which is suitable for national singing.
The midrange tone of the host microphone and mouth are 5cm apart; the national singing voice is 5~10cm away. The voice of the mid-tone tone host is characterized by relaxed, lively, cheerful and refreshing, which makes the atmosphere of the entire karaoke room more active.
National songs require vocalization, voicing, and resonance to be clear, bright, and pure, with ethnic style and characteristics.
The equalizer (EQ) is processed as follows:
100Hz does not increase without attenuation, no near-talk effect;
256~440Hz is increased by 3~6dB;
Increase 3dB at 1~3kHz to make the sound clear;
Increases 3dB at 10kHz, increases the expressive power of the sound, and improves the resolution of the sound.
3) The distance between the remote pickup microphone and the sound source is 10~20cm.
Long-distance pickup is suitable for the pickup of Bel Canto. As the name implies, the vocal sounds are beautiful, and the vocalization is subject to special training. Therefore, the harmonics of the timbre are more numerous and the amplitude is stronger, and the overtone structure of the overall timbre is relatively full. The electroacoustic system is required to have a wide frequency band so that the low frequency overtone, the intermediate frequency overtone, and the high frequency overtone can be smoothly passed without being blocked.
In order for the sound system to have good frequency transmission characteristics, the following processing is required:
1LF is increased by 3~6dB;
2256~315Hz is increased by 3~6dB;
31~2kHz is increased by 3~6dB;
The 410kHz boost is 3~6dB.
2, the angle of the microphone (1) close-range pickup - popular singing, the distance between the microphone and the sound source is 1 ~ 5cm, the angle should be 15 ° ~ 30 °, to avoid the low-frequency air mass buzz.
(2) Middle distance pickup - national and bel canto, the distance between the microphone and the sound source is 5~20cm, and the angle is about 15°.
(3) Long-distance pickup - the distance between the microphone and the sound source is 10~20cm or more. Generally, multiple sound sources are picked up, such as a voice part and a violin group sound. The radiation angle axis of the microphone is aligned with the sound source, ie the angle is 0°.
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