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Tutorial: Explosion ​

In this tutorial, we will create a simple 8-bit explosion effect.

Presentation

Creating SFXAsset ​

First of all, please create new SFXAsset named "Explosion", as you did in previous tutorials.

Choosing proper waveform type ​

For explosions, it is best to use noise waveforms. In this case, we will use White Noise waveform.

Selecting White Noise

As you can hear, it sounds quite harsh and is good starting point for explosion sound.

Shaping the envelope ​

For explosions, the most important part is shaping the envelope properly. Explosions use small or zero attack times with a quick decay and longer release. We also tune the sutain level lower to make accent the initial bang part of the explosion.

Please shape the envelope with the following values:

  • Attack: 0.00
  • Decay: 0.20
  • Sustain: 0.40
  • Length: 0.20
  • Release: 0.40

Envelope settings

Applying proper frequency ​

In order to make it sound more like explosion, we need to lower the frequency of the sound. Please change the frequency to 0.33.

Frequency settings

Applying Vibrato ​

In order to make the explosion sound more "random" and chaotic, we will apply Vibrato effect. However, we do not want explosion to rely on this effect, so we will use it in very subtle way.

Please enable Vibrato and use these settings:

  • Wave type: Cubic Wave (this one sounds smoother than Sine Wave)
  • Frequency: Linear, Base = 20.00 , Speed = 18.00 (this makes vibrato to move faster over time)
  • Amplitude: 0.15 (this makes vibrato effect very subtle)

Vibrato settings

Applying Skip ​

In order make the sound more interesting, we will apply Skip effect. Skip effect decreases the sample rate of the sound, making it sound more "choppy" and lo-fi.

We will use static value of 0.35 for this effect.

Skip settings

INFO

Due to how Skip effect works, it may change the "note" of sound even with very small tunes. A 0.36 value may sound significantly different than 0.35, you can use this to experiment with different feelings of the sound.

Finalizing with Equalizer ​

Just to make the sound a little more rough, we will decrease mid frequencies a little with Equalizer.

Please change the Mid Gain parameter to 0.70.

Equalizer settings

That's it! ​

Congratulations, you have created a simple explosion sound effect!