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RE: Cricket Polarity Tester

I guess I don't see what the problem is with testing CD players for polarity.

One creates a pulse with an audio editor, saves it as a WAV file, and burns it to CD-R. One rips the CD-R back to a WAV file. One will have the same polarity as the first WAV file. If the numbers in the editor's plot shows a positive pulse, one connects a scope to the DAC and verifies that the polarity is positive (or not). Done.

One takes the same CD-R and scope and repeats the test with a CD player.

If one has a DAC and ADC one can verify that the combination doesn't invert polarity by similar means. After this has been done, one can then try recording the Cricket test signals, etc.

Am I missing something?

Tony Lauck

"Diversity is the law of nature; no two entities in this universe are uniform." - P.R. Sarkar

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