Type 3 sound level meters offer a low resolution and cover a limited range of frequencies. They are commonly used to find approximate sound levels and provide very basic noise assessments.

Type 2 sound level meters offer mid-range resolution and measure most of the common frequencies encountered in day-to-day activities. They are commonly used for noise assessments to verify if levels are within acceptable levels.

Type 1 sound level meters offer the highest resolution and measure the broadest range of frequencies. They are intended for lab use, acoustic science, and other precision applications.

Type 2 sound level meters offer mid-range resolution and measure most of the common frequencies encountered in day-to-day activities. They are commonly used for noise assessments to verify if levels are within acceptable levels.