Audio processing and ALC in the FT-897D. I recently bought an FT-897D, and after a period of operation noticed. problems with what I perceived to be a low average level of output power and. reports of muffled audio. This is the story of my investigation to improve the. audio quality and increase the average level of transmitted power.
Most commonly, the change is a result of sound assimilation with an adjacent sound of opposite voicing, but it can also occur word-finally or in contact with a specific vowel. For example, English suffix-s is pronounced [s] when it follows a voiceless phoneme (cats), and [z] when it follows a voiced phoneme (dogs).
As the vocal folds vibrate, the resulting vibration produces a buzzing quality to the speech, called voice or voicing or pronunciation. Sound production involving only the glottis is called glottal. English has a voiceless glottal transition spelled h. In many accents of English the glottal stop (made by pressing the folds together) is used as a variant allophone of the phoneme /t/ (and in some dialects, occasionally of /k/ and /p/); in some languages, this sound is a phoneme of its own.