LPC - Linear Predictive Coder

ADT LPC C67x

VOICE CODER

The Adaptive Digital Technologies LPC-C67X .pdf voice coder is a real-time implementation of one of the LPC-10 vocoder. LPC-10 is one of the early vocoder standards and has been adopted and used in numerous defense communication systems.

Coding Rate: 2.4 kbps

Sampling Rate: 8 kHz

FEATURES

Functions are C-callable.
Excellent choice for very low bit rate communication systems
Useful for developing backward compatible equipment based upon DSP technology

AVAILABILITY

ADT LPC is available on the TMS320™ DSP Family

C67x™DSP Generations

SPECIFICATIONS

LPC C67x

All Memory usage is given in units of byte.

Function	MIPS	Program Memory	Data Memory	Per-Channel Data Memory	Scratch Memory
Encode	10	-	-	1016	5065
Decode	14.6	-	-	608	868
Encode / Decode	24.6	36 k	36 k	1624	5415

Last update: 12/10/2004

FUNCTION

LPCinit(. . .)

LPCencode(. . .)

LPCdecode(. . .)

APPLICATIONS

Military communications used in narrow band channels.