Vocoders

Our mainstream is proprietary low bit rate and standard vocoders (speech codecs) for wide range of bit rates from 300 bps up to 64.0 kbps
(including our newest technology TWELP) and various applications:

  • Secure Voice,
  • Digital Radio,
  • Voice Communication,
  • Software Defined Radio,
  • Wireless Communication,
  • Voice over IP,
  • Voice Storage,
  • etc.

Our proprietary SPR vocoders are PATENT-FREE and ROYALTY-FREE and have superior characteristics in comparison with others.

Any vocoder can be customized for ANY FRAME SIZE and ANY BIT RATE . All our vocoders are high optimized both algorithmic and computing.

Proprietary

SPR Classic ™ line: SPR Robust ™ line: TWELP ™ line:
-- -- 600...9600 bps
600 bps -- 300 bps
800 bps 800 bps --
1000 bps 1000 bps 600 bps
1200 bps 1200 bps 1200 bps
2400 bps 2400 bps 2400 bps
3600 bps 3600 bps 3600 bps
4000 bps 4000 bps
-- 4800 bps

Standard

STANAG, TIA, ISO, ISOC: ITU-T: ETSI (DMR, GSM, TETRA):
MELPe (2400, 1200, 600 bps) G.711 DMR 3600 bps
APCO Project 25 Dual-Rate G.722 dPMR 3600 bps
EVRC (IS-127) G.722.1 TETRA ACELP/AMR
HVXC (MPEG-4 ISO 14496-3) G.722.2 GSM FR
iLBC (RFC 3951) G.723.1 GSM HR
G.726 GSM AMR
G.728 GSM AMR WB
G.729 GSM AMR WB+
G.729.1 GSM VMR

To get information about our products, which are presented here by inactive links, please contact us: request@dspini.com