Transcription of AN4841 Application note - STMicroelectronics
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AN4841 Application note - STMicroelectronics
February 2018AN4841 Rev 21/251AN4841 Application noteDigital signal processing for STM32 microcontrollers using CMSIS IntroductionThis Application note describes the development of digital filters for analog signals, and the transformations between time and frequency domains. The examples discussed in this document include a low-pass and a high-pass FIR filter, as well as Fourier fast transforms with floating and fixed point at different associated firmware (X-CUBE-DSPDEMO), applicable to STM32F429xx and STM32F746xx MCUs, can be adapted to any STM32 Signal Processing (DSP) is the mathematical manipulation and processing of signals. Signals to be processed come in various physical formats that include audio, video or any analog signal that carries information, such as the output signal of a Cortex -M4-based STM32F4 Series and Cortex -M7-based STM32F7 Series provide instructions for signal processing, and support advanced SIMD (Single Instruction Multi Data) and Single cycle MAC (Multiply and Accumulate) use of STM32 MCUs in a real-time DSP Application not only reduces cost, but also reduces the overall power foll
is the digit for bit n. The range of numbers supported in a Q15 number is comprised between -1.0 and 1.0, corresponding to the smallest and largest integers that can be represented, respectively ... subtracting the high half-word product from the low half-word product, and adds the difference to a 32-bit accumulate operand. Algorithms AN4841.
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