restoring clipped audio

Searching for 'noise reduction tutorial' in Cool Edit Pro's help system, found a Howto for restoring clipped audio:

To restore clipped audio while retaining the amplitude

If you have clipped audio (sound that’s overly amplified to the point of distortion), Cool Edit Pro’s Clip Restoration effect can help clean it up. Here’s how to use it without changing the volume of the waveform.

1. In Edit View, use Edit > Convert Sample Type to convert the file to 32-bit audio.

2. Run Effects > Noise Reduction > Clip Restoration with “Input Attenuation” set to 0dB.

3. Run Effects > Amplitude >Hard Limiting with “Boost Input” set to 0dB, and “Limit Max Amplitude” set to -0.2dB to bring the restored clipped audio back into normal range.

4. Use Edit > Convert Sample Type to convert the waveform back to the original sampling frequency if desired.