def draw_fft(img, fft_buf):
fft_buf = (fft_buf / max(fft_buf)) * SIZE
fft_buf = np.log10(fft_buf + 1) * 20
color = (0xFF, 0x0F, 0x00)
for i in range(0, SIZE):
img.draw_line(i, SIZE, i, SIZE-int(fft_buf[i]), color, 1)
def draw_fft(img, fft_buf):
fft_buf = (fft_buf / max(fft_buf)) * SIZE
fft_buf = np.log10(fft_buf + 1) * 20
color = (0xFF, 0x0F, 0x00)
for i in range(0, len(fft_buf)):
img.draw_line(i*SCALE, SIZE, i*SCALE, SIZE-int(fft_buf[i]) * SCALE, color, SCALE)
print(math.isclose(result, ref_result, rel_tol=1E-6, abs_tol=1E-6))
result = (np.sinh(np.asinh(np.pi/2)))
print(math.isclose(result, ref_result, rel_tol=1E-6, abs_tol=1E-6))
print(np.degrees(np.pi))
print(np.radians(np.degrees(np.pi)))
print(np.floor(np.pi))
print(np.ceil(np.pi))
print(np.sqrt(np.pi))
print(np.exp(1))
print(np.log(np.exp(1)))
print(np.log2(2**1))
print(np.log10(10**1))
print(np.exp(1) - np.expm1(1))
x = np.array([-1, +1, +1, -1])
y = np.array([-1, -1, +1, +1])
result = (np.arctan2(y, x) * 180 / np.pi)
ref_result = np.array([-135.0, -45.0, 45.0, 135.0], dtype=np.float)
cmp_result = []
for i in range(len(x)):
cmp_result.append(math.isclose(result[i], ref_result[i], rel_tol=1E-9, abs_tol=1E-9))
print(cmp_result)
x = np.linspace(-2*np.pi, 2*np.pi, 5)
result = np.sin(x)
ref_result = np.array([2.4492936e-16, -1.2246468e-16, 0.0000000e+00, 1.2246468e-16, -2.4492936e-16], dtype=np.float)
cmp_result = []
def mel(f):
return 2595. * numpy.log10(1. + f / 700.)