Which of the following statements is correct? (1) All vibrations produce sound. (3) Vibrations of frequency more than \(20 \mathrm{~Hz}\) only produce sound. (4) Vibrations of frequency between \(20 \mathrm{~Hz}\) and \(20,000 \mathrm{~Hz}\) only produce sound.

}$ always produce sound." This statement is also not entirely accurate, as vibrations with a frequency above 20 Hz may still not produce sound if their amplitude is too weak, or if their frequency is too high for human hearing (typically above 20,000 Hz). #tag_title# Step 3: Analyze Statement 4 #tag_content# The fourth statement says that "All sounds are produced by vibrations." This statement is correct, as any sound we hear is the result of objects vibrating and creating pressure waves in the surrounding medium. Whether the object is a musical instrument, a speaker, or a vocal cord, all sounds are a result of vibrations. #tag_title# Step 4: Conclusion #tag_content# Based on our analysis, Statement 4, "All sounds are produced by vibrations," is the correct statement about sound production.