The phrase "a group of frequencies" is correct and usable in written English.
It can be used in contexts related to sound, music, or signal processing where multiple frequencies are being discussed together.
Example: "The audio engineer adjusted the equalizer to enhance a group of frequencies that were crucial for the clarity of the vocals."
Alternatives: "a range of frequencies" or "a set of frequencies".
As depicted in Figure 8, the proposed methodology has successfully detected a group of frequency bins that present coherent behavior (represented by the dashed lines) which corresponds to an underlying GSM technology-specific channel that is indeed included in the examined power spectrum block.
The temporal coherence model is based on the idea that a perceptual 'stream' emerges when a group of (frequency) channels are coherently activated against the backdrop of other uncorrelated channels (Shamma and Micheyl, 2010).
If frequency-division multiplexing is used to combine a group of these frequency-modulated subcarrier channels, the system is known as an FM/FM system.
It chronicles the experiences of a group of high frequency traders as they find ways to exploit stock market inefficiencies by trading on information just fractions of a second faster than the competition.
The satellites broadcast on a shared group of frequencies according to a pre-determined pattern.
It's all done by the algos, the servers, and the data centers, and we had discovered that stock exchanges, like the New York Stock Exchange or Nasdaq, had a special relationship with a group of traders called high frequency traders.
River otters also may use a birdlike chirp for communication over longer distances, but the most common sound heard among a group of otters is low-frequency chuckling.
A group of 13 COGs with frequency higher than 70% is clearly identified.
Weighing suggestions from a group of users against the frequency of Google searches should increase the likelihood to perform simulations closer to real life.
