OAM (Overlap Add method) and OSM (Overlap Save Method) were the two methods (implemented in C) that we used to find the output of FIR filter.
The value of N we selected was 8 and L was 5. Hence in OAM, the 13-pt sequence that we entered got decomposed into 3 parts and convolution of each part was calculated using FFT algorithm.
Similarly, in OSM too the sequence was decomposed into 3 parts and circular convolution is found after which the overlapped part is neglected and the rest becomes the output.
Similarly, in OSM too the sequence was decomposed into 3 parts and circular convolution is found after which the overlapped part is neglected and the rest becomes the output.
Computationally both the methods are equally useful and selection depends on the application.
ReplyDeleteyes the selection is based on the application
DeleteOAM and OSM requires the same amount of computations and hence same memory space.
ReplyDeleteYes, so as vaibhavi said selection depends on the application
Deleteoam and osm can find op of digi fir filter
ReplyDeleteoam and osm find wide applications
ReplyDeleteOAM and OSM methods are used for long input sequence
ReplyDeleteYes, it breaks the kind sequence of data into small blocks depending on the method and then computation is done
DeleteThese methods are used in FIR filter
ReplyDeleteyes they are used to find the output of the digital fir filter
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