Acoustic Echo Cancellation (AEC) software is used in Radio, Mobile, VoIP and Voice communications.

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VOCAL’s Acoustic Echo Cancellation software is available as a standalone algorithm, a library, with a VoIP stack and our Voice Quality Enhancement System. The source code is optimized for DSPs and conventional processors from TI, ADI, ARM, AMD, Intel and other leading vendors.  Our AEC software is used in millions of installations world-wide, including public telephone systems, VoIP products, speakerphones, intercoms and other products. Contact us to discuss your Acoustic Echo Cancellation application requirements.

AEC Acoustic Echo Canceller
Acoustic Echo Cancellation remove echoes generated by the enclosed loudspeaker from the microphone signal.

Acoustic Echo Cancellation

AEC Software Solution for DSPs

VOCAL’s acoustic echo cancellation algorithm estimates the transfer function of the acoustic environment from the enclosed loudspeaker to the device microphone and cancels received echoes from the microphone signal. Constraints include the volume of the enclosure, the required bandwidth, and the tolerable delay.

VOCAL’s embedded software libraries include a complete range of ETSI / ITU / IEEE compliant algorithms as well as many other standard and proprietary algorithms. Our acoustic echo cancellation and noise control software is modular and can be executed as a single task under a variety of operating systems or standalone with its own microkernel. Our extensive experience in the optimization and tuning of acoustic echo cancellation algorithms for ANSI C and DSP architectures means that we can provide our customers unparalleled technical support.

Software Features

Audio Examples

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

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, 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