Enhanced Voice Services
| Internet media type | audio/EVS |
|---|---|
| Developed by | Fraunhofer, JVCKenwood, Nippon Telegraph and Telephone, NTT Docomo, Panasonic, Ericsson |
| Type of format | Lossy audio |
| Standard | 3GPP TS 26.441, 26.442 |
Enhanced Voice Services (EVS) is a superwideband speech audio coding standard that was developed for VoLTE and VoNR. It offers up to 20 kHz audio bandwidth and has high robustness to delay jitter and packet losses due to its channel aware coding and improved packet loss concealment. It has been developed in 3GPP and is described in 3GPP TS 26.441. The application areas of EVS consist of improved telephony and teleconferencing, audiovisual conferencing services, and streaming audio. Source code of both decoder and encoder in ANSI C is available as 3GPP TS 26.442 and is being updated regularly. Samsung uses the term HD+ when doing a call using EVS.