Center for New Music and Audio Technologies

Computing the Sine Function

When implementing a sine calculator in digital hardware one has to remember the expense of the multiplication needed for many algebraical methods. Alternative techniques are based on polynomial approximation and/or table-lookup [4] as well as shift and add algorithms [5]. Among the various properties that are desireable, one can cite speed, accuracy or the reasonable amount of resource ^1.1 [6]. The architecture of FPGAs specifies suitable techniques or might even change desireable properties. Because the number of sequential cells and amount of storage area, needed for table-lookup algorithms, are limited but combinational logic in terms of LUT in the FPGA's CLBs is sufficiently available, shift and add algorithms fit perfectly into an FPGA.


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