Has anybody ever written the Dolby encode/decode algorithm in Windows-based software? The question arose when a friend of mine told me about some orphaned Dolby B-encoded tapes. These apparently are reel-to-reel and without calibration tones. Granted, without the calibration tone, decoding of the tapes would be pure guesswork. However, a computer-based program would at least allow non-real-time experimentation so that a plausible reference level could be established. Aaron Z Snyder