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sound (n)


The effectiveness of the sound insulation depends on the excitation frequency.

The following formula shows how wave length , frequency and sound velocity are related: .

Measurements can also be taken at the source of the sound.

Lärm (m)


Sie decken Türspalte ab, um Luftströmungen, Staub- und Lärm abzuhalten.

Bei sehr hohen Lärmpegeln kommen meist noch Vibrationsbelastungen hinzu.

Dichtungen in allen Türöffnungen verhindern Lärm- und Partikelemissionen.

噪声 (n)

声音 (n)

ruido (n)

sonar (n)

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