8-BIT RETRO SOUND FX GENERATOR

You don't even need to import audio files. You can generate this exact sound effect at runtime in Unity without adding any MBs to your APK or game download size:

using UnityEngine;

public class ProceduralSFX : MonoBehaviour
{
    public static AudioClip GenerateLaserSFX(float duration = 0.25f, float startFreq = 880f, float endFreq = 220f)
    {
        int sampleRate = 44100;
        int sampleCount = Mathf.CeilToInt(sampleRate * duration);
        float[] samples = new float[sampleCount];

        for (int i = 0; i < sampleCount; i++)
        {
            float t = (float)i / sampleRate;
            float progress = t / duration;
            float freq = Mathf.Lerp(startFreq, endFreq, progress);
            
            // Square wave formula with decay envelope
            float phase = t * freq * 2f * Mathf.PI;
            float rawWave = Mathf.Sign(Mathf.Sin(phase));
            float envelope = 1f - progress;

            samples[i] = rawWave * envelope * 0.5f;
        }

        AudioClip clip = AudioClip.Create("GeneratedLaser", sampleCount, 1, sampleRate, false);
        clip.SetData(samples, 0);
        return clip;
    }
}

HOW PROCEDURAL 8-BIT AUDIO SYNTHESIS WORKS