1.8.1 Module description
FFT and related transform functions for dspic33-cmsis-dsp.
This group of functions provides the APIs for transform operations in the dspic33-cmsis-dsp Library.
The implementations of complex FFT (CFFT) and real FFT (RFFT) optimized for Microchip architectures. Depending on the device and instruction set capabilities, different algorithmic variants may be used to achieve optimal performance.
Although the implementations may differ internally across architectures, all variants produce results that meet the same verification requirements, including identical SNR thresholds and error tolerances.
Transform instances must be initialized before use. Refer to the specific initialization functions such as mchp_cfft_init_f32 for details. |
The required buffer sizes depend on both the FFT length and the target architecture. Detailed information is provided on the documentation page Transform Buffers. |