Downsampling sample rate conversion (1 risultati)

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - Please note that the content of this book primarily consists of articlesavailable from Wikipedia or other free sources online. In signalprocessing, downsampling (or 'subsampling') is the process of reducingthe sampling rate of a signal. This is usually done to reduce the datarate or the size of the data. The downsampling factor (commonly denotedby M) is usually an integer or a rational fraction greater than unity.This factor multiplies the sampling time or, equivalently, divides thesampling rate. For example, if compact disc audio at 44,100Hz isdownsampled to 22,050Hz before broadcasting over FM radio, the bit rateis reduced in half, from 1,411,200 bit/s to 705,600 bit/s, assuming thateach sample retains its size of 16 bits. The audio was thereforedownsampled by a factor of 2.…