Multiple choice general knowledge science & technology

What is the frequency of phone?

  1. 500HZ to 5.5KHZ

  2. 300HZ to 3.4KHZ

  3. 400HZ to 4.5KHZ

  4. 350HZ to 3.5KHZ
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The frequency range used in traditional telephone systems is 300 Hz to 3.4 kHz. This is known as the 'voice band' or 'telephone bandwidth' - it was chosen to preserve intelligible speech while minimizing bandwidth requirements in early telephony infrastructure.

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