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SPO600 Algorithm Selection Lab

19 bytes added, 13:51, 3 February 2017
Lab 5
== Lab 5 ==
1. Write two different approaches to adjusting the volume of a sequence of sound samples, using different algorithms, in the C language. In each case, you should take a series of signed 16-bit integers representing sound waveform samples and multiply each by a floating point "volume scaling factor" in the range 0.000-1.000. It is recommended that one approach be the naive multiplication of the sample by the volume scaling factor, and the second approach be dramatically different (e.g., table lookup, multiplication by bit-shifting, memoization, or another approach).
2. Test which approach is faster. Control the variables and use a large run of data (at least hundreds millions of samples). Use both [[SPO600 Servers|x86 and AArch64]] systems for testing - DO NOT compare results between the architectures (because they are different classes of systems) but DO compare the relative performance of the algorithms on each architecture. For example, you might note that "Algorithm I is NN% faster than Algorithm II on Architecture A, but NN% slower on Architecture B".

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