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Echo Cancellation Software

Echo Cancellation Processing

Echo Cancellation software enhances speech for Radio, Mobile, VoIP and Voice applications

Echo Cancellation software is used for speech enhancement in a wide range of Radio, Mobile, VoIP and Voice applications. To support your application development VOCAL provides software solutions including:

  • Acoustic Echo Cancellers
  • Line Echo Cancellers
  • Network Echo Cancellers
  • ITU G.168, G.167 and G.165 compliant
  • Optimized for DSPs, ARM and other microprocessors

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VOCAL’s echo cancellation software operates every day in millions of installations world-wide, including public telephone systems as well as intercoms, speakerphones and VoIP products. Contact us to discuss your application requirements with our engineering staff.

VOCAL’s Echo Cancellation software modules are available standalone, as a library, and with our Voice Quality Enhancement System. Source code is optimized for DSP, ARM and other processors from TI, ADI, Intel and other leading vendors.


  • ITU compliant
  • Passes rigorous proprietary tests
  • Rapid convergence
  • Double talk detection
  • Non-linear Processing (NLP)
  • Built-in Noise Reduction
  • Comfort Noise Generation (CNG)
  • Supports multiple channels
  • Supports user callable functions
  • Portable, re-entrant and re-locatable code
  • Optimized for ANSI C and leading DSP architectures



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

Processors Operating 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, ARM Cortex-A8/A9, Cortex-M3/M4
  • 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
  • eCOS / eCOSPro
  • Google Android
  • Green Hills Integrity
  • Micrium μCOS
  • Symbian
  • Wind River VxWorks
VOCAL Technologies, Ltd.
520 Lee Entrance, Suite 202
Amherst New York 14228
Phone: +1-716-688-4675
Fax: +1-716-639-0713