Continuants
Speech sounds that can be [see page 2, sustained] over time and retain their phonetic quality (basically for as long as you can keep your breath going). This extends to:
- All fricatives
- Some approximants
- All nasals
- Monopthong vowels
By retaining phonetic quality, the spectogram entry for such words retain the same shape over time.
When [see page 7, visualised] on a spectogram, these show up as a continuous sequence.