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KTV in the audio equipment debugging step decomposition
Tune the overall idea of the microphone
Pop, popular singer, basically use the dynamic microphone, speaker placement try not to cover the microphone pickup area. The overall direction is to sing the lack of confidence in the high frequency, highlighting the voice of the singers bright, emboldened enough to reduce the frequency, to avoid the sound is too big and distorted, women with low frequency sound thick, men plus high-frequency sound transparent.
Keep familiar with what you need before debugging
① Equipment on and off the order
Boot order: audio equipment (VOD, CD, DVD), audio processing equipment (effects, equalizer, etc.) to the
power amplifier to the TV, projector. Turn off the order of the opposite, you should turn off the amplifier.
This operation can withstand open, shut down the impact of equipment, to prevent burned amplifier and
speakers.
② Debugging
1. The power of the amplifier [microphone, music] potentiometer transferred to the appropriate location
2. The sound quality compensation knob are placed in the middle position.
3. The first test microphone sensitivity and dynamic performance, and then add reverb and accompaniment
music singing, singing through the reverberation, should be more rounded than the original song sound, full
and level,rich sense of the scene.
4. Test accompaniment music: accompaniment music to the normal operation of the volume, but pay attention
to the amount of moderate fitness, loudness is too easy to make people tired and unbearable. (Tuning should
be in different positions to listen to the effect in judging the stereo, audio and video, sound quality, put the track should be familiar song). The requirements of the music effect should be strong, there is a sense of beauty,treble can not harsh, bass can not be cloudy, ask the song clear, such as female voice teeth can be heard clearly.But not too heavy.
5. Pay attention to the official singing, the original singing sound.
Precautions when tuning
① Should be adjusted when the left and right channels were tuned. Should be familiar with the relationship
between listening and live sound, to a large extent rely on personal hearing.
② With reverberation landscaping song. For non-professional singers should be appropriately increased reverberation, to cover up the noise and voice defects.
③ The amount of hours to pay attention to enhance the low frequency and high frequency, the volume is
appropriate to enhance the frequency, to enhance the brightness of the sound.
④ Tuning to song-based. When the song appears, the accompaniment gradually down to highlight the song.
⑤ On the disco or rock must pay attention to enhance the bass can not be spine compensation button, so as to
avoid excessive power output and damage amplifier and speakers
⑥ If the sound echo whistle, should quickly reduce the total volume of the microphone (or fine-tune the knob) to remove the whistle, find out the reasons and then gradually increase.
Voice note debugging tips
① Human voice is a compound sound. That is, by the sound of the pitch and a series of overtones formed.
These overtone is the pitch frequency of the pitch, physics called crossover, electro-acoustic called harmonics, music called overtone.
② Low-frequency overtones of a strong, tonal performance was mixed; IF overtones relatively strong, the tone
on the performance was rounded, natural and harmonious; high-frequency harmonic overtone ③ Strong, the
sound was bright, clear, Strong analytical power.
④ If the frequency of the high frequency band is too weak, the tone becomes gray and dull, lack of charm, and personality; if the high frequency frequency is too strong, the sound will become sharp, harsh.
⑤ If the frequency of the high frequency band is too weak, the sound becomes dim, hazy; if the frequency of the high frequency band is too strong, the tone will become dull.
⑥ If the frequency of the low frequency band is too weak, the tone will become thin and pale; if the frequency of the low frequency band is too strong, the sound will become muddled
KTV room reverberation time adjustment
Reverb usually determines the length of the sound, the sound of the color and clarity have a direct impact. Under normal circumstances:
① Bass singing, the reverberation time can be transferred to a shorter, in order to improve the clarity of the
sound; if the soprano concert can be appropriate to extend the reverberation time to increase the color of the sound.
② For concert venues, if the walls around the room are made of wood materials, then the sound itself has a
certain reverberation effect. At this time, the reverberation time should be reduced to avoid ambiguous
sound; on the contrary, if the room is glass Structure, or hang with velvet curtains and other sound-absorbing materials, such a room lack of reverberation, reverberation time should be adjusted larger, so as to avoid the sound of dry.
③ The number of spectators also have a great impact, because the audience's clothing on the sound also has a
great absorption effect. In general, the tuner can choose a suitable reverb time in 1-2 seconds.
④ Usually reverberation time between 0.7 ~ 1.2ms more appropriate. The simple way is to clap in the room,
feel the sound in the room of the reverberation state, if the resonance means that the room reverberation time is appropriate.