Matlab resample non integer

1. How do you convert a sampling rate by non integer factor?
2. How do you resample data in Matlab?
3. Is resampling the same as upsampling?
4. How do you downsample a signal in Matlab?

How do you convert a sampling rate by non integer factor?

To enable this process the non-integer factor has to be approximated by a rational number: Hence, the sampling-rate conversion is achieved by interpolating by L i.e. from 44.1 kHz to [44.1x160] = 7056 kHz. Then decimating by M i.e. from 7056 kHz to [7056/147] = 48 kHz.

How do you resample data in Matlab?

y = resample( x , p , q ) resamples the input sequence, x , at p / q times the original sample rate. resample applies an FIR Antialiasing Lowpass Filter to x and compensates for the delay introduced by the filter. The function operates along the first array dimension with size greater than 1.

Is resampling the same as upsampling?

Resampling involves changing the frequency of your time series observations. Two types of resampling are: Upsampling: Where you increase the frequency of the samples, such as from minutes to seconds. Downsampling: Where you decrease the frequency of the samples, such as from days to months.

How do you downsample a signal in Matlab?

y = downsample( x , n ) decreases the sample rate of x by keeping the first sample and then every n th sample after the first. If x is a matrix, the function treats each column as a separate sequence. y = downsample( x , n , phase ) specifies the number of samples by which to offset the downsampled sequence.