第14章音Sound原書 p.431–472

Key Equations重要な式

14.1 Speed of Sound, Frequency, and Wavelength14.1 音の速さ、振動数、波長

Doppler effect observed frequency (moving source)

英語のヒント

ドップラー効果で観測される振動数(動く源)

Doppler effect observed frequency (moving source)

f_{o b s} = f_{s} (\frac{v_{w}}{v_{w} \pm v_{s}})

Doppler effect observed frequency (moving observer)

英語のヒント

ドップラー効果で観測される振動数(動く観測者)

Doppler effect observed frequency (moving observer)

f_{o b s} = f_{s} (\frac{v_{w} \pm v_{o b s}}{v_{w}})

beat frequency

f_{B} = | f_{1} - f_{2} |

beat frequency

うなりの振動数

f_{B} = | f_{1} - f_{2} |

f_{n} = n \frac{v}{4 L}, n = 1, 3, 5...

f_{n} = n \frac{v}{2 L}, n = 1, 2, 3...

resonant frequencies of a closed-pipe resonator resonant frequencies of an open-pipe resonator

英語のヒント

閉管の共鳴体の共鳴の振動数開管の共鳴体の共鳴の振動数