# Check your understanding of the course material

### 1. What is a vocoder?

### 2. Wav2Vec2 is an example of

### 3. What does a blank token in CTC algorithm do?

 token for 'unknown'.",
			explain: ""
		}
	]}
/>

### 4. Which of the following statements about CTC models is FALSE? 

### 5. Whisper is an example of  

### 6. What is the easiest way to perform audio classification?

### 7. True or false? When treating spectrograms as images for classification, you will always benefit from image data augmentation techniques, such as shifting an image, cropping it, or resizing.