The sound wave produced by a drum differs from that produced by a bell in several ways, which contribute to the differences in loudness and pitch. Here are some characteristics that generally differentiate the sound waves generated by drums and bells:
Amplitude: The drum produces a louder sound compared to the bell. The amplitude of a sound wave corresponds to its intensity or loudness. Drums typically generate larger amplitude vibrations due to the physical impact of striking or hitting the drumhead, resulting in a more forceful sound wave.
Frequency: The bell produces a higher-pitched sound compared to the drum. The frequency of a sound wave corresponds to its pitch. Bells generally vibrate at higher frequencies, producing higher-pitched tones. Drums, on the other hand, tend to produce lower-pitched sounds due to their larger size and lower-frequency vibrations.
Harmonic content: Both drums and bells produce sound waves with complex harmonic content. However, the specific harmonics present in the sound wave differ for each instrument. Bells often have a more distinct and pronounced set of harmonics, which contributes to their characteristic tone. Drums, particularly those with a stretched drumhead, can exhibit more inharmonicity and a broader range of frequencies in their sound.
It's important to note that the actual sound produced by a drum or bell is influenced by various factors, including their design, materials, and the technique used to play them. The specific characteristics mentioned above are general tendencies but may vary depending on the specific drum or bell being considered.