how can i use the algorithm of  pitch transposer

Hello,

1. The ADAU1452 is so new that advanced algorithms like the Pitch Transposer have not yet been coded. So far, Reverb is the only special effect available. Pitch Transposer is available for the ADAU1442 and most other SigmaDSPs. As presently implemented it's not quite up to the task of key-changing music, but may prove useful in other applications.

2. The Parametric EQ block (where you choose the desired response by editing a graphic window) is available for the ADAU1452, but not for the ADAU1442. However, you can build a parametric equalizer for any SigmaDSP by cascading several General Second-Order filters as shown below. Drag the General Second-Order filter to your schematic, then right-click it and grow the number of sections you need. Click the blue box in each section to open the settings window, where you can adjust the Parametric EQ controls -- frequency, boost, and Q. You can use the Stimulus and Probe blocks to show a response graph, Adjust the filter controls (adding more sections if necessary) to get the desired curve.

Best regards,

Bob

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