I'm making a Shazam program, and when using my phone to receive sound, the frequencies I'm picking up are different from the ones I get from my computer. Why does it happen? How can it be solved? (I'm using the same method to extract the frequencies from both the phone and the PC).
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1Different mic/hardware, how different are they? – zgc7009 May 10 '16 at 18:23
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the difference is 11 hz – Tar Wolfson May 10 '16 at 19:21
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Sounds like a sound engineering question! The microphone, preamp, A/D converter, mic position etc, will all make a difference. Probably nothing to do with your software, so unlikely a programming question. – Simon Bosley May 10 '16 at 20:31
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11 Hz at what expected frequency? 11Hz from 20Hz is a lot more than 11Hz in 20kHz. – jaket May 11 '16 at 00:41