3-4: 1 SEE ANSWER

Answer: B (a 1000 Hz tone with a SL of 60 db).

To solve this problem you must use the loudness graph given in this unit. First, find the point on the graph where x = 200 (representing 200 Hz) and y = 60 (representing 60 db). Then see which line goes through that point. We can see that the 60 db line goes through this point. Remember, these lines always give 1,000 Hz as a reference. Therefore the answer is B: a 1000 Hz tone with a SL of 60 db would have the same loudness as a 200 Hz tone with a sound level of 60 db.

1. REDIRECT 3-4 Loudness Level