These tests require a file of speech, recorded at 16 bits/sample, 8000 samples/second. The file should be called "pre_oki_adpcm.wav". The tests compress this file, decompress it, and store the results in another file called "post_oki_adpcm.wav". Listening tests may be used to evaluate the degradation in quality caused by the compression. Both 32k bps and 24k bps compression may be tested.
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