Decimation

Decimating Long Data in Chunks

Decimating Long Data in Chunks
  1. What is decimation ratio?
  2. How do you decimate data in Matlab?
  3. What is decimation of a signal?

What is decimation ratio?

The decimation ratio value controls the ratio with which the digitized audio is down-sampled". This feature is used to achieve a lower sampling rate than that supported by the sound card. This will allow greater frequency resolutions at low frequencies for vibration measurements and similar applications.

How do you decimate data in Matlab?

y = decimate( x , r ) reduces the sample rate of x , the input signal, by a factor of r . The decimated vector, y , is shortened by a factor of r so that length(y) = ceil(length(x)/r) .

What is decimation of a signal?

Decimation is the process of reducing the sampling frequency of a signal to a lower sampling frequency that differs from the original frequency by an integer value. Decimation also is known as down-sampling.

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