Documents about Sample Rate Conversion filter design

[blueteeth]

Sample Rate Conversion

Any good document about arbitrary Sample Rate Conversion filter design?especially about fractional ratio conversion,and be efficiency to implement.

 

[mahdithdn]

Re: Sample Rate Conversion

Hi

if you want a teoretical approach "Discrete-Time Signal Processing" by Alan V. Oppenheim is a good source and if you want an implimentation approuch i think "real time signal processing using TMS320C55x" is a very good reference and you can find it in a sharing-ware "emule plus" freely.

regards

 

[Wacko2000]

Re: Sample Rate Conversion

This is a topic which is very interesting and also everytime hard to implement.
Especially fractional interpolators. The following desription requires a relative simple FIR filter structure but large ROM table for coefficient storage and a precise modulo counter.
One way to achieve fractional interpolation is to implement a large table of a precisely described impulse response. This impulse response is a low pass filter.
Implement this filter as an polyphase filter. The actual tapset which is passed to the filter pipeline must be changed dynamically. The proper selection of the tabset must be performed by a very precise counter of which the MSB's will actually select the proper tapset of the FIR filter.

Regards

 

[boeysue]

Re: Sample Rate Conversion

use the interpolation and the decimation for the fractional sample rate convertion.
Example
1:4 interpolation after 3:1 decimation can make 3:4 fractional sample rate convertion.

 

[van_gift]

Sample Rate Conversion

That means only the rational interpolation could be implemented ...

 

[pegas]

Re: Sample Rate Conversion

Matlab contains a rich set of help files concerning this subject. I burried in this problem starting a reading that help.