数字信号处理 英语
    Digital Signal Processing (DSP) is an essential technology used in various fields such as communication, media, control systems and audio signal processing. This technology uses algorithms to transform digital signals (numbers) into specific applications. In this article, we will explore some common terminologies used in DSP in English.
    1. Sampling
    Sampling is the process of converting a continuous signal into a discrete signal. The sampled signal represents the original signal at specific intervals, known as the sampling frequency. The number of samples taken per unit time is called the sample rate. For example, in audio signal processing, the standard sample rate is 44.1 kilohertz (kHz), which means that the signal is sampled 44,100 times per second.
    2. Quantization
    Quantization is the process of assigning a discrete value to each sample. Each sample is
rounded to the nearest value in a given set of discrete values. The interval between each value is known as the quantization step size. For example, in audio signal processing, the quantization step size is measured in bits. The most common quantization bit size is 16 bits, which means that each sample can be represented by a 16-bit binary number.
    3. Filtering
transform英文
    Filtering is the process of removing or attenuating specific frequencies in a signal. The filter can be designed to pass only the desired frequency range or to eliminate unwanted frequencies. There are two types of filters – analog filters and digital filters. Analog filters use passive components such as capacitors and resistors, while digital filters use mathematical algorithms to process the signal.
    4. Fast Fourier Transform (FFT)
    The Fourier Transform is a mathematical technique used to analyze signals in the frequency domain. FFT is a particular algorithm that efficiently calculates the Fourier Tran
sform of a discrete signal. It is widely used in digital signal processing to analyze and process signals in the frequency domain.
    5. Digital Signal Processors (DSPs)
    Digital Signal Processors (DSPs) are specialized microprocessors used to perform DSP operations. DSPs are used in devices such as cellphones, wireless modems, televisions, and audio devices. They are optimized for performing complex mathematical operations required in digital signal processing.
    In conclusion, digital signal processing has become an essential technology in many fields, from communications to audio signal processing. Understanding the terminologies used in DSP is vital in learning and applying this technology. The above-mentioned terminologies are some of the most common terms used in DSP, and having a good understanding of these will help you to get started in this exciting field.

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