c0b3262be4
* re-work spectrogram method, so that RAM can be re-used * update docs with spectrogram changes
45 lines
1.1 KiB
Python
45 lines
1.1 KiB
Python
import math
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try:
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from ulab import numpy as np
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use_ulab = True
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except ImportError:
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import numpy as np
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use_ulab = False
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x = np.linspace(-np.pi, np.pi, num=8)
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y = np.sin(x)
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if use_ulab:
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if 'real' in dir(np):
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a = np.fft.fft(y)
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c = np.real(np.fft.ifft(a))
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else:
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a, b = np.fft.fft(y)
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c, d = np.fft.ifft(a, b)
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# c should be equal to y
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cmp_result = []
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for p,q in zip(list(y), list(c)):
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cmp_result.append(math.isclose(p, q, rel_tol=1e-09, abs_tol=1e-09))
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print(cmp_result)
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z = np.zeros(len(x))
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if 'real' in dir(np):
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a = np.fft.fft(y)
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c = np.real(np.fft.ifft(a))
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else:
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a, b = np.fft.fft(y, z)
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c, d = np.fft.ifft(a, b)
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# c should be equal to y
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cmp_result = []
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for p,q in zip(list(y), list(c)):
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cmp_result.append(math.isclose(p, q, rel_tol=1e-09, abs_tol=1e-09))
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print(cmp_result)
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else:
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a = np.fft.fft(y)
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c = np.fft.ifft(a)
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# c should be equal to y
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cmp_result = []
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for p,q in zip(list(y), list(c.real)):
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cmp_result.append(math.isclose(p, q, rel_tol=1e-09, abs_tol=1e-09))
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print(cmp_result)
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