Final answer:
Frequency analysis is used to analyse the frequencies of signals or waves to extract information or identify patterns. It is applied in fields such as engineering and music to identify resonant frequencies or tune instruments.
Step-by-step explanation:
The premise behind frequency analysis is to analyse the frequencies of different signals or waves in order to extract relevant information or identify patterns. This concept is widely used in various fields such as engineering, music, and communication.
In engineering, frequency analysis is used to identify resonant frequencies of objects or systems. For example, in automotive engineering, frequency analysis can help identify parts that may vibrate excessively or produce unwanted noise.
In music, frequency analysis is used to tune instruments. For example, piano tuners listen for beats when comparing a note with a tuning fork and adjust the string until the beats go away.