- A brief burst of machine-gun fire is faintly heard.
- A brief burst of machine-gun fire is heard faintly.
- A brief, faint burst of machine-gun fire is heard.
- A faint, brief burst of machine-gun fire is heard.
Where is the best place to place "faint/faintly" in this sentence?
(The people who hear the machine-gun fire are on the second floor of a building while the man who fires the machine gun are on the sixth floor. That's why it's faint.)