Step 1: noise reduction

The first step to clean the dubbing is to eliminate the hiss of the microphone or preamplifier. Maybe people think this is not important because it is below 76dB. But even a small hiss or noise can make the whole sound blurred and hazy. You may not pay attention to it, but without it, you will feel the improvement of sound quality, Many sampling noise reduction software can complete such work and extract representative noise sample fragments. Confirm that it is pure microphone and speech amplifier noise. Do not include background noise or similar sounds. The sampling can be very short.

The range of noise reduction should not be too large. To eliminate the noise from the dubbing stage, pay attention to the problem of signal-to-noise ratio. Based on iodb, if you can eliminate it, you can select more than iodb. If you can't, on the contrary, if you apply noise reduction to the whole dubbing, pay attention to the dubbing effect after noise reduction, so as to confirm that there are no distortion and defects.

Step 2: get rid of the "pop"

Most of these sounds are concentrated in some low-frequency parts. Pass these bursts (usually in the sounds with B and P) through a high pass filter and select the frequency to be about 100 Hz. Whether it is useful or not, you need to do the following:

1. Progress to frequency to eliminate more whispers

2. Add low-frequency attenuation slope to further weaken the low sound

3. Double the attenuation effect by connecting the two filters in parallel

Use the parameter balanced low shelf to lower the amount of falling frequency. If you don't want to affect any part other than the burst, you should be very careful when selecting the region of the burst. Tip: expand the waveform, You will find that the low-frequency part of the waveform is layer by layer in the whole dubbing. Because such a sound wave has a very large wavelength, it is easier to find it. Just select this part,

Step 3: silence is better than sound

What we want to say here is not to remove the hissing equipment noise, but refers to the background noise in the singing gap, such as the sound of a stack of paper when the dubbing actor looks at another page, or the clash of clothes when he is waiting to match the next line, and so on. There are four primary ways to deal with this noise.

Noise gate. - the time from complete silence to the beginning of dubbing is too short and the process is too disharmonious. However, if the noise is very low, it can also be solved by setting a reasonable head / tail time

Downward expansion is a better choice than the threshold, because if you choose a lubrication slope under a certain threshold, the result will sound more natural

Silence. It is a choice for many hard disk recorders in the modify menu. You can select an area to make it "quiet", and the program will write "zero signal" in this part. However, some programs can complete this mission with different processes. The erasure of acidpros. Note that the effect modified with silence has the same disadvantages as that modified with noise gate

Fade out and fade in: turn the annoying part into seclusion, but gradually weaken to seclusion after hundreds of milliseconds, and then gradually show dubbing from seclusion after the same long time. This will naturally eradicate those wastes

Step 4: deal with breathing sound

Inhaling is not a bad thing; He can make dubbing harmonious and humanized. If there is a time, especially when you tighten the dubbing, and a suction is too loud to bear, there are two methods to choose from:

Select areas that include inspiratory sounds and reduce their volume appropriately（ For example, select a certain range from - 6dB to - 15dB) and add some strengthening treatment in the process of inhalation. This method has obvious effect. Although the inhalation sound is still large, it has experienced an obvious progress process.

Step 5: proper differentiation

If the continuous signal sounds better after being compressed, you can check whether the track level of a segment is lower than that of other parts to make your compression processing better. Make the whole music level consistent. Of course, if the volume is due to the normal demand of music emotion (for example, You don't have to deal with a monologue when other instruments need to be quiet) and when it goes down.

Use the normalization function in Daw to make the music reach the standard level of 0. Although this is not done for each piece of music, it is only done for those stages that need to be done. This will avoid the "sense of contraction" that the vocal part is 8 higher than other parts

Step 6: don't forget to fade out

The volume gradient at the beginning and end of dubbing can make it more "smooth" between dubbing and non dubbing. Generally, I prefer to decay faster first, and then gradually "out" to silence. Sequoia gradient modifier '· about fading, there are two first choices:

If you want to keep some exhalations during singing, fade in with "exaggeration". Quickly rise to a high level, and then gradually slide to a large value. If you need to let the sound appear somewhere, you can use it slowly and gradually. It starts to rise gradually, and then quickly rises to a large value·

Step 7: deep processing

Now that you have got a clean and natural vocal segment, you can continue to do some deep processing on it, such as EQ, compression, limiting and other personalized processing. As for EQ, I always like to make some small progress in the intermediate frequency part of the vocal (3-5 kHz). If the singer needs a warm texture, I will also slightly improve the low voice part, If his voice is too thick, you can do some "low cutting".

Although I often use EQ and dynamic processing, I make an exception about dubbing. I often play this track alone and listen carefully. This is because I think dubbing is an important element, so everything else must be compatible with it

Similarly, with little tightening on the vocal track, due to the previously mentioned tips of differentiation and some simple strengthening and weakening, of course, all these views are subjective, and you have to rely more on your own technology and experience to target those different vocal tracks. Because each sound is like a fingerprint Unique · but there is no doubt that they can become beautiful and beautiful through these seven steps.

Article source: Jiangmen film and television recording production http://www.sjttv.com