symmetrize
Functions
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int main(int argc, char *argv[])
symmetrize [ option ] [ infile ]
-l int
FFT length \((2 \le L)\)
-q int
input format
-o int
output format
infile str
double-type data sequence
stdout
double-type symmetrized data sequence
ramp -l 3 | x2x +da # 0, 1, 2 ramp -l 3 | symmetrize -l 4 -q 0 -o 1 | x2x +da # 0, 1, 2, 1 (used for shaping fourier transform input) ramp -l 3 | symmetrize -l 4 -q 0 -o 2 | x2x +da # 1, 1, 0, 1, 1 (used for shaping frequency response) ramp -l 4 | symmetrize -l 6 -q 0 -o 3 | x2x +da # 2, 1, 0, 1, 2 (used for shaping frequency response)
- Parameters
argc – [in] Number of arguments.
argv – [in] Argument vector.
- Returns
0 on success, 1 on failure.
See also
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class sptk::DataSymmetrizing
Symmetrize/desymmetrize data sequence.
The input and output takes one of the following forms.
Type 0:
\[ \begin{array}{cccc} x(0), & x(1), & \ldots, & x(L/2). \end{array} \]Type 1:\[ \begin{array}{ccccccc} x(0), & x(1), & \ldots, & x(L/2), & x(L/2-1), & \ldots, & x(1). \end{array} \]Type 2:\[ \begin{array}{cccccccc} \frac{1}{2} x(L/2), & x(L/2-1), & \ldots, & x(0), & x(1), & \ldots, & x(L/2-1), & \frac{1}{2} x(L/2). \end{array} \]Type 3:\[ \begin{array}{cccccccc} x(L/2), & x(L/2-1), & \ldots, & x(0), & x(1), & \ldots, & x(L/2-1), & x(L/2), \end{array} \]where \(L\) must be even.Public Types
Public Functions
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DataSymmetrizing(int fft_length, InputOutputFormats input_format, InputOutputFormats output_format)
- Parameters
fft_length – [in] FFT length, \(L\).
input_format – [in] Input format.
output_format – [in] Output format.
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inline int GetFftLength() const
- Returns
FFT length.
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inline InputOutputFormats GetInputFormat() const
- Returns
Input format.
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inline InputOutputFormats GetOutputFormat() const
- Returns
Output format.
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inline int GetInputLength() const
- Returns
Expected input length.
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inline int GetOutputLength() const
- Returns
Expected output length.
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inline bool IsValid() const
- Returns
True if this object is valid.
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bool Run(const std::vector<double> &data_sequence, std::vector<double> *symmetrized_data_sequence) const
- Parameters
data_sequence – [in] Input data.
symmetrized_data_sequence – [out] Output data.
- Returns
True on success, false on failure.
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DataSymmetrizing(int fft_length, InputOutputFormats input_format, InputOutputFormats output_format)