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HOW TO REMEMBER FORMULA AND CALCULATOR?

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INVenting Brain Assistant Tools


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Demonstration on how to use your smartphone as your formula and calculator tool


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VOICE DATA ENTRY
valid only for smartphone with microphone icon. Touch clear button. Next touch any white button. Next touch microphone icon . Next speak numbers only.
For decimal use the word "point" example say, "thirteen point seventy five" . Then touch the Solve button.

INVBAT.COM is helping employees, teachers, and students to have a personal calculator website, accessible anytime and anywhere using smartphone, tablet, laptop, and desktop computer for only $2.32 per month.

Signal to Noise Ratio Calculator

A SNR of 2.5 dB means there might be reduction in data speed. In digital communication SNR of 16.48 dB means the data speed is clearly readable.

Communication engineer always try to design their system to get maximum SNR.

Find the Signal to Noise Ratio given input signal of 0.3 microVolt and output signal of 2 microVolt.

Practice: Output signal is 1 microvolt and input signal is 0.8 microvolt.
Find the SNR

Make sure the unit of measurement for input and output signal are the same, for example output (microVolt) and input (microVolt) because dB has no units of measurement.

Ar, in dB
= 20 Log 10
Ao Output
Ai Input

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Solve for the output signal, Given the SNR is 16.48 dB and the given input signal of 0.3 microVolt.

Ar, in dB, Given
= 20 Log 10
Ao Output
Ai Input

Signal output, Ao = microVolt


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Started 4/27/2009
Updated 4/29/2017
INVBAT means INVenting Brain Assistant Tools
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