资讯

Most mixers provide each input channel with some form of equalization. Three areas are often provided allowing adjustment of low, medium, and high frequency regions of a sound. Each of these ...
Very Low Frequency (VLF) 3 to 30 kHz 10 to 100 km Low Frequency (LF) 30 to 300 kHz 1 m to 10 km Medium Frequency (MF) 300 kHz to 3 MHz 100 m to 1 km High Frequency (HF) 3 to 30 MHz 10 to 100 m ...
The area where the United States lags behind the rest of the world is in allocating spectrum for licensed, full-power use. 5G spectrum is spread among low-, medium-, and high-frequency bands. Each ...
These individuals were exposed to the retailer’s commercial an average of 1.5x (the average of 1 + 2) 25%, or 25, were brand buyers in the medium-frequency column. These individuals were exposed ...