A certain sound contains the following frequencies: 400 Hz, 1600 Hz, and 2400 Hz. Select the best description of this sound. A. This is a pure tone. B. This is a complex tone with a fundamental of 400 Hz, plus some of its overtones. C. This is a complex tone with a vrtual pitch of 800 Hz D. These frequencies are unrelated, so they are probably pure tones from three different sound sources.

Question

Tristen Mcconnell

Physics

3 March, 05:05

A certain sound contains the following frequencies: 400 Hz, 1600 Hz, and 2400 Hz. Select the best description of this sound. A. This is a pure tone. B. This is a complex tone with a fundamental of 400 Hz, plus some of its overtones. C. This is a complex tone with a vrtual pitch of 800 Hz D. These frequencies are unrelated, so they are probably pure tones from three different sound sources.

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Answers (1)

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Fuzzy · Answer 1

B.

Explanation:

The 3 frequencies found in the sound waveform (400, 1600, and 4000 Hz) are related between them, being 400 Hz the fundamental frequency of the sound, and 1600 Hz and 4000 Hz, harmonics (overtones of the fundamental) according to this relationship:

1600 Hz = 4 * 400 Hz (4th Harmonic)

2400 Hz = 6 * 400 Hz (6th Harmonic)