### 19.3 Klatt durations ¶

If parameter `Duration_Method` is set to `Klatt` the duration rules from the Klatt book (allen87, chapter 9). This method requires minimum and inherent durations for each phoneme in the phoneset. This information is held in the variable `duration_klatt_params`. Each member of this list is a three-tuple, of phone name, inherent duration and minimum duration. An example for the mrpa phoneset is in `lib/klatt_durs.scm`.