Audio frequency range is from

Options

A. 20 Hz to 20 kHz
B. 200 Hz to 2000 Hz
C. 2 kHz to 20 kHz
D. 20 kHz to 200 KHz

Answer

To determine the audio frequency range, we need to identify the range of frequencies that the human ear can detect. Here’s a step-by-step solution:

### Step 1: Understand the Concept of Audio Frequency
Audio frequency refers to the range of sound frequencies that can be heard by the human ear. This is a crucial aspect of communication systems as it determines the types of sounds we can perceive.

**Hint:** Remember that audio frequencies are specifically related to human hearing capabilities.

### Step 2: Identify the Range of Human Hearing
The typical range of frequencies that humans can hear is from 20 Hz to 20,000 Hz. Frequencies below 20 Hz are considered infrasound and are not audible to humans, while frequencies above 20,000 Hz are considered ultrasound.

**Hint:** Think about the limits of human hearing when considering audio frequencies.

### Step 3: Convert Frequency Units
The frequency range of 20 Hz to 20,000 Hz can also be expressed in kilohertz (kHz). Since 1 kHz is equal to 1,000 Hz, we can convert 20,000 Hz to kilohertz:
- 20,000 Hz = 20 kHz

**Hint:** Remember the conversion factor between hertz and kilohertz to simplify your calculations.

### Step 4: Select the Correct Option
Based on the information gathered, the audio frequency range is from 20 Hz to 20 kHz. Among the options provided:
1. 20 Hz to 20 kHz
2. 200 Hz to 2000 Hz
3. 2 kHz to 20 kHz
4. 20 kHz to 200 kHz

The correct option is clearly the first one: **20 Hz to 20 kHz**.

**Hint:** Always compare your findings with the provided options to ensure accuracy.

### Final Answer
The audio frequency range is from **20 Hz to 20 kHz**.