Beyond intelligibility, telephony must preserve speaker recognizability

Evidence

When the quality of speech is at a level where the intelligibility is relatively good, certain other dimensions in sound quality are of interest. Such attributes are, for example, speaker recognizability and speech naturalness. For example, in telephony, the minimum requirement on quality is intelligibility of speech, but usually recognizability of the speaker is also required. The quality of synthetic speech also needs to be measured. For example, if speech synthesis is used in announcements in public spaces, the intelligibility of the messages has to be known. The same methods can be used with synthetic speech as with natural speech. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2384

Categorization

• XREF: Connects to synthetic-voice quality debates and TTS system design; the point that synthetic speech can be measured with the same methods as natural speech is directly applicable.