IFFT Example 2: 2D Signal - Teradata Vantage

In this example, the signals are one-dimensional (2D).

Input

• inputtable: fft_output2, output by FFT Example 2: 2D Signal

SQL Call

CREATE MULTISET TABLE ifft_output_table2 AS (
  SELECT * FROM IFFT (
    ON fft_output2 AS inputtable PARTITION BY id_0 ORDER BY timestep
    USING
    ValueColumns ('real_value1', 'imag_value1')
    NumDimensions (2)
    IsSignalRealValued ('false')
  ) AS dt
) WITH DATA;

Output

This query returns the following table:

SELECT * FROM ifft_output_table2 ORDER BY id_0, timestep;