result of FFT

[Timon Gehr]

On 7/8/25 23:06, Timon Gehr wrote:
> 
> auto fToWave(R)(size_t N,R coefficients_f){
>      return iota(N/2+1).map!(j=>
>          tuple!("magnitude","frequency","phase")(
>              (j==N/2?1.0:2.0)*abs(coefficients_f[j]).re,
>              K(j)*sample_rate/N,
>              std.complex.log(coefficients_f[j]).im)
>          );
> }

As `f_0` is also real, similar to `f_(N/2)`, this should of course have 
been:

```d
auto fToWave(R)(size_t N,R coefficients_f){
     return iota(N/2+1).map!(j=>
         tuple!("magnitude","frequency","phase")(
             (j==0||j==N/2?1.0:2.0)*abs(coefficients_f[j]).re,
             K(j)*sample_rate/N,
             std.complex.log(coefficients_f[j]).im)
         );
}
```