goertzel-filter
| Crates.io | goertzel-filter |
| lib.rs | goertzel-filter |
| version | 0.2.0 |
| created_at | 2016-10-08 20:17:51.139195+00 |
| updated_at | 2016-10-13 03:34:35.216192+00 |
| description | Implementation of Goertzel filter-based single-frequency DFT. Accurate to 0.1%. |
| homepage | |
| repository | https://gitlab.com/bright-star/goertzel |
| max_upload_size | |
| id | 6789 |
| size | 34,526 |
(bright-star)
documentation
README
goertzel
Rust implementation of the Goertzel filter.
The Goertzel filter is faster than the FFT for a small range of frequencies of interest.
interface
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pub fn filter_naive(input: &Vec<f64>, linear_freq: f64) -> Vec<Complex<f64>>Just applies the filter equations and gives you the complete output.
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pub fn dft(input: &Vec<f64>, linear_freq: f64) -> Complex<f64>Computes the associated (closest) DFT term to a given linear frequency.
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pub fn dft_power(input: &Vec<f64>, linear_freq: f64) -> f64Computes the power of the signal at a given DFT bin.