If you use diodes, or zeners, then it's good to confirm the transfer ratio of input to output, as the diodes wil influence the ratiol before the nominal 0. Masterpieces Of Modern Soul Volume 3 Rarest here. 7V 'clip' per diode. You should also try to determine the voltage level at which your soundcard starts to clip the incoming signal (eg. Look at the frequency spectrum of a sine wave and notice when the harmonics become significant - eg.

With TrueRTA). Then you can tweak your probe to give the largest input voltage swing before external clipping. You should also try and introduce hf filtering.

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Its quite easy to kill a soundcard (don't ask me how I know). Blackberry Os For 9300. Wether the resistors are right or not depends on the intended application, which you said zilch about. Audio inputs usually has an impedance, which will modify the external divider ratio. Your voltage numbers disagree, but going by one of the sets input impedance is 52k. Your modified diagram is incorrect.

I said to replace the 82k resistors (as positioned in the original diagram, of course). And as Tim says, the clipping will be soft, and it's not beneficial to clip it externally at a lower level than the card clips at itself. I like what I have read so far and I wanted to add that you may see vastly different results just based on the frequency of the input signal you are using.

Do you already know the frequency response of th input in question? We know it is band pass because audio inputs are usually AC coupled so do you know at what frequency the input is in passband 10Hz, 50Hz,100Hz.? Perhaps if you have the ability you should characterize the frequency response then it may make better sense when you calculate your input limiting. Remember that your input resistors add thermal noise.