Crate spectrum_analyzer[−][src]
A simple and fast no_std
library to get the frequency spectrum of a digital signal
(e.g. audio) using FFT. It follows the KISS principle and consists of simple building
blocks/optional features.
Modules
windows | Several window functions which you can apply before doing the FFT. For more information: |
Structs
FrequencySpectrum | Convenient wrapper around the processed FFT result which describes each frequency and
its value/amplitude in the analyzed slice of samples. It only consists of the frequencies
which were desired, e.g. specified via
|
Enums
FrequencyLimit | Can be used to specify a desired frequency limit. If you know that you only
need frequencies |
Functions
samples_fft_to_spectrum | Takes an array of samples (length must be a power of 2),
e.g. 2048, applies an FFT (using library |
Type Definitions
Frequency | A frequency. A convenient wrapper type around |
FrequencyValue | The value of a frequency in a frequency spectrum. Convenient wrapper around |
SpectrumTotalScaleFunctionFactory | Describes the type for a function factory that generates a function that can scale/normalize
the data inside |