23 lines
609 B
Markdown
23 lines
609 B
Markdown
# Numpy -- rfft and spectral power
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## Goal
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We want to calculate a well behaved power spectral density from a 1 dimensional time series.
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Questions to [David Rotermund](mailto:davrot@uni-bremen.de)
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## Generation of test data
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We will generate a sine wave with 10 Hz.
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```python
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import numpy as np
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time_series_length: int = 1000
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dt: float = 1.0 / 1000.0 # time resolution is 1ms
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sampling_frequency: float = 1.0 / dt
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frequency_hz: float = 10.0
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t: np.ndarray = np.arange(0, time_series_length) * dt
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y: np.ndarray = np.sin(t * 2 * np.pi * frequency_hz)
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```
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