Does the microphone sound empty, echoing, and the voice is not thick? It's not Maicha, it's these four invisible technical problems.

Many people's microphones have no noise, no disconnection and normal parameters, but the recorded sound is just not pleasant to listen to: the voice is thin and weak, empty, with room echo, poor ear feeling, and there is no professional and full texture at all.

Most people mistakenly think that the microphone is not of high grade and needs to be replaced with high-end equipment. In fact, this is an acoustic technical problem that is more hidden than noise and cannot be detected by 99% novices.

Noise and current sound are hardware faults, while sound is hollow, echoing and not thick, which are invisible defects caused by acoustic environment+audio link setting+radio reception mode. Even with ten thousand yuan recording equipment, the sound quality is still cheap and thin if these core problems are not solved. Today, we dismantle the most difficult vocal texture problem for ordinary people, and teach you to cure the empty echo and record the full texture of the human voice.

First, the voice is empty and does not gather: the acoustic reflection of the room is the core culprit.
Why is the sound of the recording studio full and clean, and the recording at home is always empty? The fundamental difference is not in the microphone, but in the indoor acoustic reflection superposition.

The walls, floors and ceilings at home are hard planes, and there is no sound-absorbing structure. When the microphone receives the radio, it will not only record the direct voice of your mouth, but also record a large number of secondary and tertiary reflections bounced back from the wall. After the reflected sound and the original sound are superimposed and misplaced, it will form a "sense of emptiness and dispersion", which will make people lose focus and sound thin, floating and not solid.

This is also the underlying reason why many people clearly know that the room is quiet, but they record it with hazy reverberation and unclear sound.

Technical radical plan:

1. Close-range radio compression space: Keep the mouth 15–20 cm away from the microphone, greatly increase the direct sound ratio, suppress the proportion of reflected sound, and instantly focus the human voice.

2. Simple sound absorption transformation: hanging thick curtains on the back and side walls of the microphone, placing clothes, pillows and cloth ornaments, destroying hard surface reflection and eliminating empty noise at low cost.

3. Avoid radio in empty rooms, and try to record in rooms with many sundries and fabrics. The natural sound absorption effect far exceeds that of empty rooms.

Second, the speech has its own slight echo and reverberation tailing: the system reverberation algorithm is turned on by mistake.
Many novice computers and mobile phone microphones inexplicably have their own echoes, and there is a slight tail at the end of the speech, and the sound is not clean and not simple. After half a day's investigation, there was no environmental noise, and finally it was found that the system had its own sound effect algorithm conflict.

Windows and some sound card drivers turn on "indoor mode, room reverberation and sound field enhancement" by default, which is intended to optimize the sense of external playback, but it will directly destroy the original sound of recording and forcibly superimpose virtual reverberation on human voice, resulting in empty, trailing and impure sound.

This is the most hidden and difficult technical bug to find, and countless people have been pitted but can't find the reason.

Technical radical plan:

1. Turn on the computer sound settings, enter the microphone properties, and turn off all spatial sound effects, room reverberation, sound field optimization and audio enhancement.

2. The sound card control panel and audio plug-ins of live broadcast software are all reset, only the original sound mode is reserved, and the algorithm is not modified twice.

3. Turn off all AI sound effects, spatial audio and surround sound functions when the mobile phone records and broadcasts live, so as to ensure that the original sound is straight out.

Third, the voice is thin and has no thickness: the wrong frequency band cutting leads to the loss of texture.
Many people's microphone sounds "thin and floating", without chest resonance and thickness, which sounds sharp and harsh. This is not a voice problem, but a technical problem that the low frequency band is excessively cut.

Normal and full voice, relying on 80 Hz–300 Hz low frequency to make people feel thick and warm. In order to eliminate the noise floor and stop the boring sound, many novices blindly turn on the excessively high low-cut filtering, cut off all the low frequencies of 100Hz and 200Hz, and directly cut off the vocal base, resulting in dry, floating and dull voice.

Excessive noise reduction and excessive high-frequency brightening will also make people lose balance and become a harsh "plastic sound".

Technical radical plan:

1. Accurate setting of low-cut parameters: uniformly cut the frequency of 80Hz, only cut off the ambient low-frequency noise, keep the vocal base frequency band, and give consideration to cleanliness and thickness.

2. Turn off the super noise reduction and extreme noise reduction modes. Excessive noise reduction will erase the details and thickness of the voice, and keep the slight noise reduction.

3. Moderately increase the intermediate frequency of 200 Hz–500 Hz, and the human voice will become solid, warm and full immediately.

Fourth, the sound is suddenly near and far away, and the texture is unstable: the radio angle is misplaced (90% people make mistakes)
The same distance, the same setting, other people's voice is stable and thick, and your voice is empty, big and small in real time. The core problem is that the microphone pickup angle is used backwards.

Most condenser microphones and large diaphragm microphones are side radios, not top radios. Many people habitually speak to the top of the microphone, which greatly reduces the pickup efficiency, seriously attenuates the sensitivity, and naturally makes the voice thin and empty. Turn your head and bow your head slightly, and the sound texture will collapse directly.

Heart-shaped directional microphone is extremely sensitive to angle, with an offset of 30 degrees, the thickness of human voice is attenuated by half, and the offset of 60 degrees is basically only thin and far sound.

Technical radical plan:

1. Find the right radio point on the front of the microphone, and speak to the position of the diaphragm, so as to prevent the top wheat and oblique wheat from receiving radio.

2. Try to fix the head angle during the recording process, reduce the left-right deviation, and ensure the unity and stability of human voice texture.

3. Fix the microphone with a cantilever bracket to avoid angle deviation and sound quality fluctuation caused by shaking hands.

Good sound quality depends not on equipment, but on acoustic debugging.

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