Wideband speech coding spans 50 Hz to 7000 Hz for brighter fuller quality

Evidence

A trend in speech coding is wideband coding, where ‘wideband’ typically refers to the acoustic bandwidth from 50 Hz to 7000 Hz. This bandwidth gives a substantially better speech quality with ‘brighter’ and ‘fuller’ sound compared to narrowband speech. Wideband coding requires, naturally, a higher transmission rate than narrowband codecs, and the use of such codecs is made possible by faster VoIP connections and more powerful mobile networks. In addition to wideband coding, superwideband, with a 14-kHz bandwidth, and fullband, with a 20-kHz bandwidth, have also been introduced. — Ville Pulkki, Matti Karjalainen, Communication Acoustics- An…, 2223

Categorization

• DEFINE: Clarifies the technical definition of wideband versus superwideband and fullband in speech coding.