dsp 0.11.0

Digital Signal Processing
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71

//! Node for converting between real and complex numbers
//! 
//! 

use crate::num_complex::Complex32;


/// Implement Real -> complex converter
/// 
/// Example
/// 
/// ```
/// use dsp::core::complex::RealToComplex;
/// use dsp::num_complex::Complex32;
/// 
/// let mut node = RealToComplex::new();
/// let input_buffer = vec![3.0;10];
/// let mut output_buffer = vec![Complex32::new(0., 0.);10];
/// node.process_buffer(&input_buffer, &mut output_buffer);
/// 
/// assert_eq!(output_buffer[0], Complex32::new(3., 0.));
/// assert_eq!(output_buffer[1], Complex32::new(3., 0.));
/// ```

pub struct RealToComplex {}

impl RealToComplex {
    pub fn new() -> RealToComplex {
        RealToComplex {}
    }

    pub fn process_buffer(&mut self, input_buffer: &[f32], output_buffer: &mut [Complex32]) {
        let n = usize::min(input_buffer.len(), output_buffer.len());
        for i in 0..n {
            output_buffer[i] = Complex32::new(input_buffer[i], 0.); 
        }
    }
}


/// Implement Complex -> Real converter
/// 
/// Example
/// 
/// ```
/// use dsp::core::complex::ComplexToReal;
/// use dsp::num_complex::Complex32;
/// 
/// let mut node = ComplexToReal::new();
/// let input_buffer = vec![Complex32::new(4., 3.);10];
/// let mut output_buffer = vec![0.0;10];
/// node.process_buffer(&input_buffer, &mut output_buffer);
/// 
/// assert_eq!(output_buffer[0], 5.);
/// assert_eq!(output_buffer[1], 5.);
/// ```

pub struct ComplexToReal {}

impl ComplexToReal {
    pub fn new() -> ComplexToReal {
        ComplexToReal {}
    }

    pub fn process_buffer(&mut self, input_buffer: &[Complex32], output_buffer: &mut [f32]) {
        let n = usize::min(input_buffer.len(), output_buffer.len());
        for i in 0..n {
            output_buffer[i] = input_buffer[i].norm(); 
        }
    }
}