- Generate the Golay codes
- Open the pd patch golay.pd,
- Ensure that the patch is not in editing mode, and check the ``compute audio'' box in the main pd window.
- Adjust the ``Output Volume'' so that when you click on ``Record Response to
Golay A'', the system under test is behaving linearly (i.e. not clipping), but
so that the input signal to the sound interface is not too noisy.
- If there is an input volume on the sound interface, adjust it so that the
levels approximately match those shown in Figure 6 when you click on ``Record Response to
Golay A'' and ``Record Response to Golay B.'' If the sound interface
has no input volume, then you will need to adjust the ``Output
golay.pd after making a measurement
with an appropriate input level
- Once you are satisfied with the results, click the ``Write
Responses to Disk'' button.
- pd will write the files RespA.wav and RespB.wav to
disk. Rename these files so that the names match the measurement you just
made. For instance, you might rename them to
if they corresponded to the measurement of a high-pass filter.
in MATLAB or Octave to analyze the measured response. Plots will be created,
and the file
will be written to disk.