ECHO CANCELLATION / VQE SOFTWARE

Adaptive Digital's EC / VQE Algorithms- click on listing below for link and description.

G.168 - LEC & NEC ECHO CANCELLER

Network & Line World class Echo Canceller Availability C64x / C64x+ / C66x, C55x, C54x, ARM Cortex-A8/9/15, ARM Cortex-M3/M4, Win32 DLL/LIB, & Linux

Adaptive Digital’s highly regarded “carrier-class” G.168 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+ / C66x, Win32 DLL/LIB, & Linux

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 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 C64x / C64x+ / C66x, C55x, C54x, , ARM9 / 11, Cortex-M3/M4 & Cortex-A8/A9/A15, x86

AEC G2- Acoustic Echo Canceller C67xx

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.

HD AEC (G4) STANDARD AND MOBILE VARIENTS

High Definition Acoustic Echo Canceller Availability C64x+ / C66x, C64x, C6740, C55x, Cortex A8 / A9 / A15, x86 Windows, Android

The Adaptive Digital's HD AEC, based upon our 4th Generation Acoustic Echo Canceller, is a frequency-domain based algorithm. It can handle up to 128 msec tail lengths and samples at 48 kHz.

There are currently two variants of HD AEC: desktop and mobile. The desktop variant is designed for office and conference room speakerphones.

The mobile variant is an extension to the desktop variant. The mobile variant is able to operate in environments where the bulk delay (audio delay to the speaker and back from the microphone due to buffering) is not known. This is notably the case in Android-based mobile phones.

The mobile variant is designed for mobile handsets, and tablets as well as desktop and laptop computers.

NOISE REDUCTION

ADT NOISE REDUCTION

NR - Voice Quality Enhancement Availability C6xx, C55x, C54x

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+, C66x, C674x, C55x, Win32 DLL/LIB

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.

ADT NOISE REDUCTION GEN3

NR G3 - VQE C55x, C64x, C64x+, C66x, C674x

Adaptive Digital’s third generation Noise Reduction algorithm analyses the speech signal for three distinct types of degradation noise, tone, and siren.

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.