Amplitude

How to calculate amplitude from a wav file?

How to calculate amplitude from a wav file?
  1. What is amplitude in WAV file?
  2. How do I find the frequency of a WAV file?
  3. What is the unit of a WAV file?

What is amplitude in WAV file?

The 16 bit values in the wav file are amplitude values, encoded as signed 16 bit numbers. The amplitude can go from -32768 to +32767. The value can often better be interpreted as (almost) -1.0 to +1.0, but this is an interpretation.

How do I find the frequency of a WAV file?

Find a WAV file's sample rate in Windows by right-clicking the file, then clicking "Properties." In the window that appears, look under "Audio Format" for a set of details including a number expressed in kilohertz (kHz): This is the sample rate.

What is the unit of a WAV file?

Once an audio signal has been digitalized, it has no units and it is treated as a number. You could use dBFS (decibels relative to full scale) as unit, though. The value of 0 dBFS represents the maximum digital signal level.

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