Adaptive Digital Technologies is now part of the Digi-Key Design Services Network. Adaptive Digital’s Voice Communication Software expertise, showcased by their Voice Quality Enhancement (VQE) algorithms and solutions, and HD Acoustic Echo Cancellation (HD AEC) technology, is now available to Digi-Key customers who wish to enable voice features and enhances speech quality in both embedded and cloud-based applications.
HD AEC
Plymouth Meeting, PA, January 11, 2017 – Adaptive Digital Technologies’ (Adaptive Digital) High Definition Acoustic Echo Canceller (HD AECTM) handles extraordinary echoic challenges and delivers exceptional voice quality. HD AEC is a complex algorithm which includes noise reduction (NR), as well as anti-howling, adaptive filtering, nonlinear processing, microphone selection, gain and microphone equalization, automatic gain control and double-talk detection. The HD AEC algorithm eliminates acoustic echo in difficult conditions such as unbalanced speech levels, close speaker to mic proximity, background noise, wind noise, double talk, and echo path changes.
Adaptive Digital’s HD AEC – C5517 DSP Intercom Solution includes digital microphone (DM) conversion software which converts a PDM (Pulse Density Modulated) microphone signal into a PCM (Pulse Code Modulated) signal.The HD AEC – C5517 DSP supports 2 modes: Dual microphone or Single Microphone. The HD AEC-C5517 is a high definition voice quality wideband (WB) solution.
Adaptive Digital’s HD AEC Intercom software product provides superior voice clarity and true full duplex performance enabling simultaneous communication with no delay under a wide range of acoustic environments for both outdoor and indoor applications. Adaptive Digital uses a proprietary fast converging adaptive filter, and non-linear processor to deliver robust double talk performance even in unpredictable outdoor conditions. In addition to the HD-AEC algorithm, the Adaptive Digital Intercom solution provides a framework that interfaces 3 – I2S peripherals and SPI for host communication. The complete set of APIs allow the developer to command the DSP to configure, download, and run from a host processor.
The full-featured HD AEC Intercom Solution runs on a fixed-point Texas Instruments (TI’s) C5517 Digital Signal Processor (DSP) product and is designed for low active and standby power consumption. The C5517 DSP is a highly- integrated solution offered in a simple package to reduce cost and development time. “C5517 DSP is ultra-low power and easy-to-use, making it a target processor for applications based on audio pre-processing,” said John Smrstik, marketing manager, TI processors. “ADT’s HD AEC is a strong algorithm that is a perfect combination with C5517 DSPs to solve acoustic echo for end applications such as intercoms and conferencing equipments.”
The C5517 DSP doubles the performance of previous generations of ultra-low power DSP devices while delivering power optimization to support longer battery life. The C5517 DSP is ideal for voice and audio based applications including voice recognition and audio processing, as well as medical, and non-video intercom applications.
The C5517 DSP delivers high-performance and an expanded peripheral set at low power to meet the needs of audio applications enabling original-equipment manufacturers (OEMs) and original-design manufacturers (ODMs) to quickly bring their product to market.
Equipment manufacturers can differentiate their next gen offering by integrating Adaptive Digital’s HD
AEC solution into their product. Based upon the exceptional voice quality that HD AEC achieves, by incorporating
The extraordinary voice quality of Adaptive Digital’s HD AEC is validated by its adoption into several global Tier 1 IP phone manufacturers’
product.
Applications: IP Intercom | Video Intercom | home control | conferencing | home/industrial security systems
HD AEC for the C5517 DSP is a complete acoustic echo cancellation solution. Demonstration hardware available upon request.
Adaptive Digital’s G.PAK framework handles all the functionality.
Adaptive Digital offers acoustic design consultation services: Hardware, Enclosure considerations, and microphone to speaker placement.
HD-C5517 supports narrowband. When run in narrowband mode, application capacity is increased. HD AEC can be ported to other processors. Contact us with your requirements.
About Adaptive Digital’s G.PAKTM Framework
G.PAK is a scalable and configurable voice-over-packet DSP software solution that turns a digital signal processor into an easily controlled voice-over-packet engine. G.PAK integrates the building blocks that are required in voice- over-packet systems into a turnkey solution.
Plymouth Meeting, PA, November 2, 2015 – Adaptive Digital Technologies’ (Adaptive Digital) High Definition Acoustic Echo Canceller (HD AECTM) handles extraordinary echoic challenges and delivers exceptional voice quality.Adaptive Digital’s latest challenge: hospital intercom Nurse Call Systems. Under this most arduous of circumstance, hospital acoustics, Adaptive Digital’s proprietary HD AEC algorithm was able to provide exceptional voice quality while achieving full-duplex performance. Adaptive Digital’s robust HD AEC enabled clear voice communication path between the patient/nursing staff communicator unit and the nurse station console in an acoustically challenging hospital environment.
Adaptive Digital’s HD AEC is well suited to address all of the environmental issues required. HD AEC is a complex algorithm which includes noise reduction (NR), as well as anti-howling, adaptive filtering, nonlinear processing, microphone selection, gain and microphone equalization and double-talk detection. Adaptive Digital uses a proprietary fast converging adaptive filter and non-linear processor to deliver robust double talk performance even in harsh conditions. It is capable of eliminating the acoustic echo in difficult conditions such as unbalanced speech levels, close speaker to mic proximity, background noise, double talk, echoic reflective room surfaces, and echo path changes.
Acoustic echo occurs when a microphone picks up audio signals from a speaker, and sends the signal back to an originating participant. Acoustic echo can be intensified when using a very sensitive microphone and when speaker volume is turned up to a high level. When both endpoints are located in the same room, feedback from one end’s speaker to the other end’s microphone can cause loud feedback. This echo is aggravated by reflective acoustic echo bouncing off hard surfaces walls and/or objects as found in a sterile hospital setting. Additionally, the ambient environmental noise, such as staff chatter, heart and blood pressure monitors, PA and paging call tones, and alerts, and continual background noise, i.e. air filtration systems add to the already complex challenge.
Nurse Call Systems have many components, each with unique acoustic impediments: Nurse Station Console, Nurse Call Box Bed/Bath, Pillow Speaker, and Wireless Nurse Call communicators. The HD AEC intercom solution based on SitaraTM AM335x processors from Texas Instruments (TI) was rigorously tested during development. HD AEC was able to achieve full-duplex performance in all devices under all conditions, even in the case of communication under negative ERL conditions such as Hospital stairwells tend to be.
“TI is pleased to see that Adaptive Digital has used our Sitara processors to solve a problem found in many hospitals across the country,” said Artem Aginskiy, Texas Instruments. “With the HD AEC, hospitals will be able tocommunicate more efficiently and we’re thrilled that the feature-rich Sitara AM3354 processors were able to benefit these medical applications and hope that they continue to be used in these types of applications.”
Adaptive Digital Technologies, Inc.
The full featured HD AEC Solution runs on a Sitara AM3354 processors based on an Arm® Cortex®-A8 32-Bit RISC Processor. The Sitara AM335x processor offers high performance for feature-rich, low power applications with a high degree of functional integration for embedded applications. The ARM architecture supports several operatingsystems, including Linux®, and AndroidTM.
Adaptive Digital offers acoustic design consultation services: Hardware, Enclosure considerations, and microphone to speaker placement.
Adaptive Digital Roadmap HD AEC solution: Currently migrating to TI Sitara AM3356 processors. HD AEC can be ported to other processors. Contact us with your requirements.
HD Acoustic Echo Cancellation Solution for TI C674x DSPs
Plymouth Meeting, PA, October 5, 2015 – Adaptive Digital Technologies’ (Adaptive Digital) High Definition Acoustic Echo
Canceller (HD AEC™) handles extraordinary echoic challenges and delivers exceptional voice quality. HD AEC is a complex
algorithm which includes noise reduction (NR), as well as anti-howling, adaptive filtering, nonlinear processing, microphone
selection, gain and microphone equalization and double-talk detection. Adaptive Digital uses a proprietary fast converging
adaptive filter and non-linear processor to deliver robust double talk performance even in harsh conditions. Adaptive Digital’s
HD AEC software solution boasts multi microphone capability, full-duplex operation, and superior double-talk performance.
Additionally HD AEC operates in narrowband (NB), wideband (WB), super-wideband (SWB) and full band (FB) capability.
The full featured HD AEC Solution runs on a Texas Instruments TMS320C6748 fixed- and floating-point digital signal processor
(DSP). The TMS320C6748 DSP enables original-equipment manufacturers (OEMs) and original-design manufacturers (ODMs) to
quickly bring to market devices with robust operating systems, rich user interfaces, and high processor performance through
the maximum flexibility of a fully integrated, mixed processor solution. Adaptive Digital’s HD AEC solution supports up to five
(5) microphones, and up to 400 millisecond room echo tail length.
Adaptive Digital’s HD AEC product provides superior voice clarity and true full duplex performance under a wide set of acoustic
environments. It is capable of eliminating the acoustic echo in difficult conditions such as unbalanced speech levels, close
speaker to mic proximity, background noise, double talk, echoic reflective room surfaces, and echo path changes. The
extraordinary voice quality of Adaptive Digital’s HD AEC is validated by its adoption into several global Tier 1 IP phone
manufacturers’ product.
The HD AEC C6748 DSP solution was rigorously tested during development. Under the most challenging of
circumstance, HD AEC was able to achieve full-duplex performance. Equipment manufacturers can differentiate their
next gen offering by integrating Adaptive Digital’s HD AEC solution into their product. Based upon the exceptional
voice quality that HD AEC achieves, by incorporating HD AEC into their design, OEMs/ODMs will distinguish
themselves in the marketplace.
HD AEC for the C674x DSP is a complete acoustic echo cancellation solution. Demonstration hardware available upon request.
Adaptive Digital’s G.PAK framework handles all of the functionality.
Adaptive Digital offers acoustic design consultation services: Hardware, Enclosure considerations, and microphone to speaker
placement.
Adaptive Digital Roadmap HD AEC solution: Currently migrating to TI TMS320C66x Keystone™ Multicore DSP. HD AEC can be
ported to other processors. Contact us with your requirements.
About Adaptive Digital’s G.PAK™ Framework
G.PAK is a scalable and configurable voice-over-packet DSP software solution that turns a digital signal processor
into an easily controlled voice-over-packet engine. G.PAK integrates the building blocks that are required in voiceover-packet
systems into a turnkey solution.
ASR Preprocessor Suite: Auto Speech Recognition Enhancement Application Software
Adaptive Digital’s ASR Preprocessor encompasses an integrated set of front-end signal processing Voice Quality features to extract the relevant speech signal, and applies techniques to reduce noise, cancel echoic interference, missing data, and emphasize the desired signal.
Features: High Definition Acoustic Echo Canceller (HD AEC), Voice Activity Detection, Robust Background Noise removal, Automatic Gain Control, Auto Level Controls, Packet Loss Concealment (for ASR in VoIP Environment).