69. Three tones whose frequencies are respectively _

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69. Three tones whose frequencies are respectively ν1 = 50 Hz, ν2 = 200 Hz and 1 kHz ν3 = have the same intensity level Lp = 40 dB. Determine the volume levels of the tones LN.

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Detailed solution. Decorated in Microsoft Word 2003. (Target decided to use formula editor)


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