Because it is not necessary, and providing that bandwidth would increase cost and complexity. While the full range of 20Hz-20KHz is required for proper rendering of music, telephony, by standard, only requires a 3.5KHz bandwidth. You can hear and understand the spoken voice with only this range. You do not need the extended musical range.
What is the frequency range of an OE
315mhz
The frequency range of FM signal is 88hz to 108hz.
Audio output frequency is that range of frequencies that can be heard. For humans, that is generally considered to be the range of 20Hz to 20kHz.
ofdma frequency range
The entire spectrum of sounds is called the "audio frequency range." It represents the range of frequencies that humans can hear, typically from 20 Hz to 20,000 Hz.
Lock range is the input frequency range of the PLL over which out frequency changes in step with input frequency, where as capture range is the frequency range over which oput starts to responds to input frequency change.
The entire range of electromagnetic frequencies is called the electromagnetic spectrum. This spectrum includes all forms of electromagnetic radiation, from radio waves to gamma rays.
What is the frequency range of an OE
The piano has the largest frequency range of any instrument, spanning from around 27.5 Hz for the lowest note to over 4,000 Hz for the highest note. This broad frequency range allows the piano to cover a wide spectrum of sounds and tones.
The broadcasting frequency range is from 300kHZ to 3400kHZ.
315mhz
The frequency range of FM signal is 88hz to 108hz.
5MHz
The electromagnetic spectrum is the entire range of electromagnetic radiation, including radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays. Each type of radiation has a different wavelength and frequency.
The range of frequency that humans can hear is typically from 20 Hz to 20,000 Hz. This range is referred to as the audible frequency range.
An audio frequency is a frequency, or range of frequencies, of audible sound waves.