SUMMARY
The discussion centers on the relationship between wavelength and frequency in the context of human voice characteristics. The formula used, distance (wavelength) = k / frequency, was incorrectly applied with the speed of light instead of the speed of sound. The correct speed of sound is approximately 332 m/s, which yields a wavelength of 1.66 m for an average frequency of 200 Hz. Additionally, the usable voice frequency band in telephony, ranging from 300 Hz to 3400 Hz, is explored in relation to the fundamental frequency of adult human speech, which typically falls between 85 Hz and 255 Hz.
PREREQUISITES
- Understanding of basic physics concepts, specifically wave mechanics.
- Familiarity with the speed of sound in air (approximately 332 m/s).
- Knowledge of frequency and wavelength relationships in sound waves.
- Awareness of telecommunication standards regarding voice frequency ranges.
NEXT STEPS
- Research the physics of sound waves and their properties, focusing on wavelength and frequency.
- Learn about telecommunication standards, specifically the rationale behind the frequency range of 300 Hz to 3400 Hz.
- Explore the implications of frequency range choices in wired communication systems.
- Investigate the effects of frequency on voice clarity and intelligibility in telephony.
USEFUL FOR
Acoustics researchers, telecommunications engineers, audio engineers, and anyone interested in the physics of sound and its applications in communication technology.