If you want to create a simulated explosion sound without recording an actual explosion, there are a few methods you can try using sound design techniques. Here are a few approaches you can consider:
Synthesis: Use a digital audio workstation (DAW) or a dedicated synthesizer to generate an explosion-like sound. Start with a low-frequency sine wave or noise source and apply various effects such as distortion, saturation, and filtering to shape the sound. Experiment with amplitude envelopes to create the characteristic attack and decay of an explosion.
Layering: Combine multiple existing sounds to create a complex explosion-like effect. For example, you can layer elements like deep bass hits, metallic clangs, and sharp crackling sounds. Manipulate each layer's volume, pitch, and timing to achieve the desired explosion-like characteristics.
Foley Techniques: Foley artists create sound effects by performing actions with everyday objects. To create an explosion-like sound, experiment with different objects like balloons, plastic bags, or even crumpled paper to achieve the desired texture. Record the sound of these objects being manipulated, pitch-shift and process the recordings as needed, and layer them together for a fuller effect.
Sound Libraries: Utilize pre-recorded sound libraries that offer a wide range of sound effects, including explosions. There are numerous commercial and free sound libraries available online that provide high-quality explosion sounds. Look for libraries that offer a variety of explosion types, such as large-scale, small-scale, distant, or close-up, to have more options.
Software Plugins: Explore specialized sound design plugins or virtual instruments that focus on generating explosive sounds. These plugins often provide extensive control over the parameters to create custom explosions. Examples include granular synthesis plugins, impact-based sample libraries, or dedicated cinematic sound design tools.
Remember to experiment with different combinations of these techniques, layering sounds, applying effects, and adjusting parameters to achieve the desired explosion sound.