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Discusssion: 0 dB Reference Levels Please calculate the following: In acoustics, the threshold of pain is approximately 120 dB SPL. How much pressure is this, in pascals? Using a VOM (voltohm meter
Discusssion: 0 dB Reference Levels
Please calculate the following: In acoustics, the threshold of pain is approximately 120 dB SPL. How much pressure is this, in pascals?
Using a VOM (voltohm meter), you measure a 0.13 volt signal. How would you express this quantity in dBu? dBV? dBµ?
Express 4 dBu using dBV.
What is the sum of two signals (4 dBm and 3 dBm) in dBm? (Careful: will the sum of the two signals be lesser or greater than either signal alone? Make sure your answer makes sense.)
What is the sum of two signals (4 dBV and 3 dBV) in dBu? (See caution above.)
Make sure to always include units. Please post your calculations (and show your work!) accompanied by your observations:
Can you see the value of using 0 dB references?
Does anything remain confusing to you about working with 0 dB reference levels?
Are there any additional insights that you can share with your fellow classmates to help solidify these concepts?
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