[music-dsp] Oversampling to improve ADC precision?

Augmentics musicdsp at augmentics.com
Sat Jan 17 10:15:47 EST 2004


When making measurements by hand, you can increase the accuracy
by REPEATING the measurement.

4 measurements averaged will give you 2 x accuracy
16 measurements will give you 4 x accuracy
and so on i.e. accuracy improves with the ROOT of N

Does the same apply to ADCs?
Will taking the average of say 4 readings improve accuracy by 2 times?

Can running a 10-bit ADC at 16 x normal speed give you the equivalent
of a 12-bit ADC?

Or will the higher sample rate required cancel out this effect?


Richard (UK)

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