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Definitions

Following are some general definitions of terms that are used in this document.

Sample
A sample is one binary number, representing the amplitude at a fixed point in time. A sample is often stored as an 8 bit signed integer, a 16 bit signed integer, a 32 bit floating point number etc. AHI only supports integers.
Sample frame
In mono environments, a sample frame is the same as a sample. In stereo environments, a sample frame is a tuple of two samples. The first member is for the left channel, the second for the right.
Sound
Many sample frames stored in sequence as an array can be called a sound. A sound is, however, not limited to being formed by samples, it can also be parameters to an analog synth or a MIDI instrument, or be white noise. AHI only supports sounds formed by samples.


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