Audio Reference Design TI-01589: High Fidelity, Near-Field Two-Way with Echo Cancellation and Noise Reduction, an Adaptive Digital Technologies and TI Design collaboration

Adaptive Digital Technologies, Inc. and TI Instruments have collaborated together to provide TI customers with a High Fidelity Audio Hardware Reference Design demonstrating dual microphones for audio input via stereo ADC, low-power DSP featuring Adaptive Digital’s high definition acoustic echo cancellation (HD AEC), while performing noise reduction, and other audio quality enhancement algorithms.

(ACTIVE) TI Designs: TIDA-01589

TIDA-01589 features multi-microphone capable advanced audio processing algorithms from Adaptive Digital Technologies running on C5517 DSP such as high definition acoustic echo cancellation (HD AEC), beamforming, adaptive spectral noise reduction, anti-howling, adaptive filtering, nonlinear processing, and double talk detection to produce a high-quality, full-duplex communication. This design also provides a scalable platform for implementing new features like voice activation, speech recognition and directional of arrival (DOA) of sound.

Adaptive Digital TI-01589 Software Fast Facts:

  • Audio Algorithms: HD AEC, NR, Beamforming, and AGC
  • HD AEC Echo Tail – 128msec
  • Total AEC+NR+BF < 160 MIPS
  • Total Memory (Data + Program) fits into internal 5517 RAM
  • Audio – 16 kHz sample rate, 16-bit linear sample

The algorithms and processing written by Adaptive Digital Technologies for this audio reference design correct for the problems that are found in microphone array and loud-speaker applications. Beamforming (BF), noise reduction (NR) and adaptive filtering algorithms focus the processing system on speech as the critical audio signal and filter out other high-frequency and low-frequency signals in the environment.


Non-linear processing helps account for the artifacts introduced by the acoustic characteristics of the system. HD AEC is responsible for removing the echo coming from the 2-way real-time nature of the communication. Anti-howling and double talk detection work to balance audio signals, remove jitter in the transmitted signal and improve the overall quality of the final signal.

Note: Fully assembled board developed for testing and performance validation only, not available for sale.

About Adaptive Digital Technologies:

Adaptive Digital Technologies is an industry-leading global provider of VoIP and voice quality technology. Adaptive Digital’s highly optimized software enables voice and enhances speech quality in VoIP and traditional telecom applications.

Adaptive Digital delivers fielded, scalable, state-of-the-art voice enhancement algorithms/solutions, flexible configuration options, and real-world experience.  Full software suites include telephony, voice compression, fax, tone, and voice quality algorithms and solutions.

Contact or call 610-825-0182 for more information.

Contact Information

Adaptive Digital Technologies, Inc.

525 Plymouth Road
Suite 316
Plymouth Meeting, PA, 19462

tele: 610-825-0182 x120
toll-free: 1-800-340-2066

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