Espressif DSP Library API Reference

Header Files

To use the library, include esp_dsp.h header file into the source code.

• :repo_file:`modules/common/include/esp_dsp.h`

Signal (1D) Processing APIs

Signal processing APIs use dsps prefix. The following modules are available:

• Dot-product - Calculates dot-product of two vectors
• FFT - Fast Fourier Transform functionality
• DCT - Discrete Cosine Transform functionality
• IIR - IIR filter functionality
• FIR - FIR filter functionality
• Math - Basic vector operations
• Conv - Convolution/correlation functionality
• Support - Support functions
• Window functions - FFT window generation functions

Dot-product

FFT

DCT

FIR

IIR

Math

Conv

Support

Window Functions

Matrix Operations APIs

Matrix operations APIs use dspm prefix. The following modules are available:

• Multiplication - basic matrix multiplication operations

Matrix Multiplication

Matrix Operations

Miscellaneous

Various common functions used by other modules are included in this module.

Common APIs