Computes the cross-spectral periodogram of two signals.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(window), | intent(in) | :: | win |
The window to apply. The size of the window must be non-zero and positive-valued. |
||
| real(kind=real64), | intent(in) | :: | x(:) |
The first N-element signal to transform. |
||
| real(kind=real64), | intent(in) | :: | y(:) |
The second N-element signal to transform. |
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| real(kind=real64), | intent(in), | optional | :: | fs |
An optional input, that if supplied, allows for normalization of the computed spectrum by the frequency resolution. |
|
| integer(kind=int32), | intent(in), | optional | :: | nfft |
An optional input that can be used to force the length of each individual DFT operation by padding any remaining space with zeros. If not supplied, the window size is used to determine the size of the DFT. |
An array containing the discrete cross periodogram estimate. The estimate is returned at discrete frequency intervals that can be determined by a call to frequency_bin_width.
Computes the cross spectral density (CSD) of a signal via Welch's method (sometimes referred to as cross power spectral density or CPSD).
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(window), | intent(in) | :: | win |
The window to apply. The size of the window must be non-zero and positive-valued. |
||
| real(kind=real64), | intent(in) | :: | x(:) |
The first N-element signal to transform. |
||
| real(kind=real64), | intent(in) | :: | y(:) |
The second N-element signal to transform. |
||
| real(kind=real64), | intent(in), | optional | :: | fs |
An optional input, that if supplied, allows for normalization of the computed spectrum by the frequency resolution. |
|
| integer(kind=int32), | intent(in), | optional | :: | nfft |
An optional input that can be used to force the length of each individual DFT operation by padding any remaining space with zeros. If not supplied, the window size is used to determine the size of the DFT. |
An array containing the discrete CSD estimate. The estimate is returned at discrete frequency intervals that can be determined by a call to frequency_bin_width.
Computes the periodogram of a signal.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(window), | intent(in) | :: | win |
The window to apply. The size of the window must be non-zero and positive-valued. |
||
| real(kind=real64), | intent(in) | :: | x(:) |
The signal to transform. |
||
| real(kind=real64), | intent(in), | optional | :: | fs |
An optional input, that if supplied, allows for normalization of the computed spectrum by the frequency resolution. |
|
| integer(kind=int32), | intent(in), | optional | :: | nfft |
An optional input that can be used to force the length of each individual DFT operation by padding any remaining space with zeros. If not supplied, the window size is used to determine the size of the DFT. |
An array containing the discrete PSD estimate. The estimate is returned at discrete frequency intervals that can be determined by a call to frequency_bin_width.
Computes the power spectral density (PSD) of a signal via Welch's method.
| Type | Intent | Optional | Attributes | Name | ||
|---|---|---|---|---|---|---|
| class(window), | intent(in) | :: | win |
The window to apply. The size of the window must be non-zero and positive-valued. |
||
| real(kind=real64), | intent(in) | :: | x(:) |
The signal to transform. |
||
| real(kind=real64), | intent(in), | optional | :: | fs |
An optional input, that if supplied, allows for normalization of the computed spectrum by the frequency resolution. |
|
| integer(kind=int32), | intent(in), | optional | :: | nfft |
An optional input that can be used to force the length of each individual DFT operation by padding any remaining space with zeros. If not supplied, the window size is used to determine the size of the DFT. |
An array containing the discrete PSD estimate. The estimate is returned at discrete frequency intervals that can be determined by a call to frequency_bin_width.