An analog signal is composed of four basic components: DC and AC magnitudes, frequency, and phase.
模拟信号由直流和交流分量、频率和相位四部分组成。
You will see that the five signal types closely parallel the five basic types of signal information: state, rate, level, shape, and frequency content.
这五类信号与状态、速率、电平、波形和频率五种基本信号一一匹配。
Through discussing the samples of ac signal, the basic method to solve spectrum leakage is pointed out, which is to guarantee the same pace between signal frequency and sampling frequency.
通过对交流电信号采样的讨论，指出解决频谱泄漏的问题的基本方法是保证信号频率与采样频率同步。
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