dsp/fourier: fix typo
@@ -75,7 +75,7 @@ func (t *FFT) Coefficients(dst []complex128, seq []float64) []complex128 {
return dst
}
-// Sequence computes the real perodic sequence from the Fourier coefficients,
+// Sequence computes the real periodic sequence from the Fourier coefficients,
// converting the frequency spectrum in coeff into a time series, placing the
// result in dst and returning it. This transform is unnormalized; a call to
// Coefficients followed by a call of Sequence will multiply the input sequence
@@ -187,7 +187,7 @@ func (t *CmplxFFT) Coefficients(dst, seq []complex128) []complex128 {
return dst
}
-// Sequence computes the complex perodic sequence from the Fourier coefficients,
+// Sequence computes the complex periodic sequence from the Fourier coefficients,
// converting the frequency spectrum in coeff into a time series, placing the
// result in dst and returning it. This transform is unnormalized; a call to
// Coefficients followed by a call of Sequence will multiply the input sequence
