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Download DSP Blockset User`s Guide
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Partial Unbuffer Purpose 4Partial Unbuffer Library Buffers, in General DSP Description The Partial Unbuffer block unbuffers a selected portion of the input frame into a sequence of scalar outputs. Multichannel (frame matrix) inputs are unbuffered into sample vectors, with the designated matrix rows being output in sequence. The sample-based output generally has a faster rate than the frame-based input. Unbuffer a portion of an input frame to a sequence of scalar outputs. “slow-time” input (frame size = 3, frame period = 3∗Tsi) 7 8 9 4 5 6 1 2 3 “fast-time” output (frame size = 1, sample period = 3/2∗Tsi) 8 7 5 4 2 1 samples deleted Because the block unbuffers only a portion of the samples in each input frame, the sequence sample period (i.e., the sample-to-sample interval) at the output is longer than that at the input, Tso>Tsi. Vector Inputs. Vector inputs are unbuffered to a scalar sequence. The scalar output sample period for an input of frame size Mi is a factor of Mi/(M2-M1+1) longer than the input sample period, or M i T si T so = -------------------------------M2 – M1 + 1 where M1 is specified by the First output index parameter and M2 and is specified by the Last output index parameter. 4-256
