What is the normal voice speaking frequency range?

The normal voice speaking frequency range typically spans from approximately 100 to 3,500 hertz. This range encompasses the fundamental frequencies of human speech, capturing both the vowels and consonants that are critical for intelligibility and communication.

In this frequency range, the lower end (around 100 hertz) corresponds to the lower frequency sounds that are produced by the vocal cords, while the upper end (up to 3,500 hertz) includes the higher-frequency sounds that contribute to speech clarity and distinguishing between different phonemes. This range is particularly important in telecommunications and audio engineering, where ensuring the effective transmission and reproduction of human speech is crucial for maintaining sound quality and clarity in voice communication.

The other provided ranges do not accurately reflect the comprehensive frequency range essential for normal speech. For instance, options that start below 100 hertz or go beyond 3,500 hertz may include sounds that are either too low for speech intelligibility or too high, which can include noise or other sounds not relevant to clear communication in human dialogue.