What about noise ... (BD-Design)

by Eddie , Saturday, February 02, 2008, 21:37 (5921 days ago) @ PeterSt.

Hello Peter,

Noise is inherent to the materials used in electronics, especially semiconductors and resistors. Opamps often have low-noise versions at higher price. Further, e.g. carbon resistors are known to be quite noisy. As far as I know, nothing can be done about this.

On the other hand, equipment can be made really low-noise. I once red that there is a fundamental limit for analog amplifiers at ~21-22 bits resolution, that is ~130 dB S/N-ratio. That should be good enough for anybody's ears.

You can find some more info on http://en.wikipedia.org/wiki/Electronic_noise .

Kind regards,
Eddie

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