举一反三
- 数字信号处理的缩写DSP代表的含义是什么（ ） A: Digital Signal Processing ; B: Demand Side Platform ; C: Digital Signal Processor ; D: Digital Signal Process.
- signal processing
- Generally speaking, digital transmission can get higher signal quality than analog transmission, because? A: The repeater can regenerate digital pulses to remove signal distortion, and the amplifier amplifies the analog signal as well as the analog signal distorted B: Digital signals are smaller than analog signals and are not prone to distortion C: Analog signals are continuous and are not prone to distortion D: Digital signal is easier to sample than analog signal
- Comparing with an analog signal assuming a continuous range of values, a digital signal assumes discrete values, usually two permitted values.
- The P-I characteristic of LED is linear, so no matter whether it is modulated by analog signal or digital signal, no bias current is required. A: 正确 B: 错误
内容
- 0
数字模拟转换器的英语全称是( ). A: Central Processing Unit B: Analog Digital Converter C: Basic Revolution Unit D: Digital Analog Converter
- 1
For a given signal constellation, the average probability of symbol error incurred in maximum likelihood signal detection over an AWGN channel is invariant to the _________________ of the signal constellation. A: compression B: translation C: expansion D: rotation
- 2
What is the coding method which represents the digital signal 1, 0 by changing the phase value of the carrier signal? A: ASK B: FSK C: PSK D: NRZ
- 3
The A/D converter is used to convert the analog signals to digital signals. For an 8-bit A/D converter with a conversion speed of 1 ms and an analog input range of 0-5V, if a 3.3V analog signal is inputted, the digital signal output should be: A: 168 B: 3.3 C: 168.9 D: 3
- 4
what is a digital signal? () A: discrete signals B: continuous signals C: both of a and b D: signals exist in the world