Complete Communications Engineering

speech coder software
VOCAL’s speech coder optimized C code provides performance, maintainability and portability

VOCAL’s speech coder software includes a complete range of speech compression algorithms optimized for execution on ANSI C and leading DSP architectures (TI, ADI, AMD, ARM, MIPS, CEVA, LSI Logic ZSP, etc.). Native software libraries are also available for Android, iOS, and other mobile VoIP applications. VOCAL’s vocoder software modules may be  licensed by developers either standalone or as a library. Custom solutions are also available to meet your unique application requirements.

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Each speech coder may or may not be appropriate for a function and/or platform. Reference MIPS/memory requirements as well as PSQM/PSQM+ values for different voice coders under various network conditions are available from VOCAL for comparison. When evaluating a particular voice codec, please contact us to discuss your digital signal processing algorithm requirements.



Speech Coder Modules

VOCAL’s speech compression digital signal processing algorithms are available in C and optimized assembly code for the following speech coder modules:



supported platforms

VOCAL’s optimized Echo Cancellation software is available for the following platforms. Please contact us for specific Echo Cancellation supported platforms.

ProcessorsOperating Systems
  • Texas Instruments – C6xx (TMS320C62x, TMS320C64x, TMS320C645x, TMS320C66x, TMS320C67x), DaVinci, OMAP, C5xx (TMS320C54x, TMS320C55x)
  • Analog Devices – Blackfin, ADSP-21xx, TigerSHARC, SHARC
  • PowerPC, PowerQUICC
  • MIPS – MIPS32, MIPS64, MIPS4Kc
  • ARM – ARM7, ARM9, ARM9E, ARM10E, ARM11, StrongARM, ARMCortex-A8/A9/A15/A3x/A5x/A7x, Cortex-M3/M4/M7/M33
  • Intel / AMD – x86, x64 (both 32 and 64 bit modes)
  • Linux, uClinux, BSD, Unix
  • Microsoft Windows ACM / RTC / CE / Mobile
  • Apple iOS / iPhone / iPad & MacOS
  • Google Android
  • Green Hills Integrity
  • Micrium μCOS
  • Symbian
  • Wind River VxWorks
  • eCOS / eCOSPro