ECHO CANCELLATION / VQE SOFTWARE

Adaptive Digital's voice codecs - click on codec below for link and description.

G.168 - LEC & NEC ECHO CANCELLER

Network & Line World class Echo Canceller Availability C54x, C55x, C64x, C64x+, ARM & Linux

Adaptive Digital’s highly regarded “carrier-class” G.168.v10 patented echo canceller provides : rapid convergence, advanced comfort noise, handles a 128 ms echo tail without a performance penalty.

Qualified As Toll-Quality by At AT&T
ADDITIONAL FEATURES: Functions are C-callable, Multiple channel operation , Parameters are user configurable, Non-linear processor, Automatic Tail Search, Cancels multiple independent echo tails, No divergence due to doubletalk, Stationary signal detector improves performance in the presence of tones, Tone Disabler disables the EC during voiceband modem connections, Convergence monitor, & CNG

G.168Plus PACKET ECHO CANCELLATION

World class Echo Canceller G.168Plus packet C64x, & C64x+

The VoIP G.168 Plus™ packet echo canceller has the unparalleled ability to handle round-trip delays of up to 512 milliseconds. This ability to cancel echoes with exceptionally long delays, coupled with a built-in awareness and handling of packet-loss makes G.168 Plus uniquely suitable for VoIP applications.

ECHO CANCELLATION TESTING SERVICE

G.168-2004/2006 Testing Service

G.168 echo canceller is important for both telephone equipment manufacturers and service providers. Adaptive Digital Technologies, Inc., a leader in the echo canceller business, offers a G.168 echo canceller test service. Adaptive Digital performs G.168 testing on T-1 or E-1 based hardware that requires echo cancellation. Testing can be done in Adaptive Digital’s lab, in the customer’s lab, or even in the field.

ACOUSTIC ECHO CANCELLATION

AEC GEN 1 & 2

AEC - Acoustic Echo Canceller Availability C54x, C55x, C64x, ARM9 & 11, Cortex-M3 & A8

The Adaptive Digital Technologies patented acoustic echo canceller electronically removes both direct coupling and reflected echo enabling true full-duplex hands-free telephony for both mobile phones and desktop speakerphones.

AEC G4

Acoustic Echo Canceller Generation 4 Availability C64x, C64x+, C6740, Cortex A8, x86 Windows

The Adaptive Digital's 4th Generation Acoustic Echo Canceller (AEC G4), is a frequency-domain based algorithm. It can handle up to 128 msec tail lengths and samples at 16 kHz. With the fourth-generation canceller a noise reduction feature is included, as well as the typical anti-howling, nonlinear processing, and double-talk detection found in the first generation AEC.

ADT NOISE REDUCTION

NR - Voice Quality Enhancement Availability C54x , C55x , C6xx

Adaptive Digital has two classes of noise reduction algorithms. They are distinguished by a number of characteristics: Standard (noise reduction) and Low Complexity (noise suppression).

ADT NOISE REDUCTION GEN2

NR G2 - VQE C64x, C64x+

Adaptive Digital's Gen2 noise reduction is an excellent choice for applications with high background noise environments. Applications include traditional, mobile, and hands-free telephone systems, conferencing, speech recognition, and alarm systems.

NOISE SUPPRESSION

NS - Voice Quality Enhancement C55x

The Adaptive Digital noise suppression software reduces background noise that is present in speech signals during periods between speech periods, but not during the actual speech periods. This is a low-MIPS alternative to noise reduction, which reduces noise during speech periods also.