Parallel implementations of frame filters with recursive transfer functions

A non-transitory computer-readable storage media storing instructions executable by processing logic to cause the processing logic to perform the following:

• receive two or more input samples of data values;
• and
• apply a filter operation on a first and a second input sample of data values in parallel to obtain filtered first and second input samples of data values, the filter operation comprises a recursive filter operation such that the filtering of the second input sample of data values that is subsequent in time relative to the first input sample of data values is dependent on the filtering of the first input sample of data values, the apply the filter operation comprising:
• perform polyphase decomposition of the recursive filter operation to generate a first filter operation for the first input sample of data values and a second filter operation for the second input sample of data values that filters the second input sample of data values independent of the first filter operation, and
• perform the first and second filter operations on the first and second input samples of data values in parallel to produce the filtered first and second data input sample values.

Processing logic configured to perform the following:

• receive two or more input samples of data values;
• and
• apply a filter operation on a first and a second input sample of data values in parallel to obtain filtered first and second input samples of data values, the filter operation comprises a recursive filter operation such that the filtering of the second input sample of data values that is subsequent in time relative to the first input sample of data values is dependent on the filtering of the first input sample of data values, the apply the filter operation comprises:
• perform polyphase decomposition of the recursive filter operation to generate a first filter operation for the first input sample of data values and a second filter operation for the second input sample of data values that filters the second input sample of data values independent of the first filter operation, and
• perform the first and second filter operations on the first and second input samples of data values in parallel to produce the filtered first and second data input sample values.

A method, comprising:

• analyzing a model that comprises model portions representing functionalities of a recursive filter operation on two or more input samples of data values, wherein the filtering of the second input sample of data values that is subsequent in time relative to the first input sample of data values is dependent on the filtering of the first input sample of data values;
• and
• generating program code for the model, wherein generating the program code comprises
• generating first program code for a filter operation to apply on a first input sample of data values,
• generating second program code for a filter operation to apply on a second input sample of data values, wherein
• the first filter operation and the second filter operation are polyphase decomposed filter operations of the recursive filter operation, and
• the first program code and second program code are executable in parallel to obtain filtered first and second input samples of data values.

A non-transitory computer-readable storage media storing instructions executable by processing logic to cause the processing logic to perform the following:

• analyze a model that comprises model portions representing functionalities of a recursive filter operation on two or more input samples of data values, wherein the filtering of the second input sample of data values that is subsequent in time relative to the first input sample of data values is dependent on the filtering of the first input sample of data values;
• and
• generate program code for the model, wherein generating the program code comprises generating first program code for a filter operation to apply on a first input sample of data values,
• generate second program code for a filter operation to apply on a second input sample of data values, wherein
• the first filter operation and the second filter operation are polyphase decomposed filter operations of the recursive filter operation, and
• the first program code and second program code are executable in parallel to obtain filtered first and second input samples of data values.