Sample Rate (DSP)

If calculating a sine wave where a given frequency in Hertz is desired, you actually need to know the sample rate too. This is because the mathematical representation requires both values to calculate the individual sample amplitude at any specific point in time.
The actual sample rate value used can be anything. It just so happens you'll usually use the same value as in the rest of your flowgraph so that everything will be consistent (operate in the same sample rate domain).

If calculating a sine wave where a given frequency in Hertz is desired, you actually need to know the sample rate too. This is because the mathematical representation requires both values to calculate the individual sample amplitude at any specific point in time.