# Down sample rate

##### *2020-02-28 18:31*

Decimation (signal processing) The decimation factor is usually an integer or a rational fraction greater than one. This factor multiplies the sampling interval or, equivalently, divides the sampling rate. For example, if compact disc audio at 44, 100 samplessecond is decimated by a factor of 54, the resulting sample rate is 35, 280.Mar 20, 2005 With samples it is hard to always have the right digital format. But with recordings I usually stick with standard sampling rates if the end product is to CD (16bit44. 1k). I record commonly in 24bit44. 1k with CD projects to avoid sample rate down conversion. down sample rate

y downsample(x, n) decreases the sample rate of x by keeping the first sample and then every nth sample after the first. If x is a matrix, the function treats each column as a separate sequence.

When upsampling is performed on a sequence of samples of a signal or other continuous function, it produces an approximation of the sequence that would have been obtained by sampling the signal at a higher rate (or density, as in the case of a photograph). Feb 14, 2015 So what is done is first wed upsample by 2 to a 60 kHz sampling rate, and then downsample by 3 to a 20 kHz sampling rate. So even though we are reducing the sampling rate, we end up having to upsample (which involves padding with zeros) in order to get to the right sampling rate.**down sample rate** Sep 18, 2013 Here is my best attempt at an understanding: The scope always sample at 500 MSs, but then it's possible to downsample to some other sample rate that is selected through the SDK. An antialiasing filter can be imposed in software or hardware prior to the downsampling. In hardware, this is fixed, in software, it is more flexible.