High fidelity, near-field two-way audio reference design with noise reduction and echo cancellation TIDA-01589 (ACTIVE)

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Key Document

Description

Man machine interaction requires an acoustic interface for providing full duplex hands-free communication. In hands-free mode, part of the far-end or near-end audio signal from the speaker is coupled to the microphones. Furthermore, in noisy environments the microphones also capture ambient noise in addition to the useful near-end audio signal. The captured multi-microphone audio signals are corrupted by acoustic background noise as well as by echoic signals that significantly degrade the intelligibility of the desired signal, and restrict the performance of subsequent audio processing systems. This reference design demonstrates dual microphones for audio input via stereo ADC, low-power DSP performing noise reduction, acoustic echo cancellation, and other audio quality enhancement algorithms. This design also features TI’s Smart Amp technology for high-quality and high-SPL audio output from a micro-speaker.

Features
  • Two-way audio modular platform supporting analog or digital microphone for audio capture and playback on micro-speaker using TI Smart Amp technology
  • TLV320ADC3101 Stereo ADC with 92-dBA SNR, 0.003% THD integrated PGA , AGC, and mini-DSP for implementing decimation filtering
  • Powerful TMS320C5517 DSP for implementing various audio processing algorithms like: Adaptive Spectral Noise Reduction (ASNR) and Acoustic Echo Cancellation (AEC) handling echo tails up-to 128ms
  • Smart Amp TAS2557 with integrated ultra-lownoise audio DAC, class-D power amplifier and built-in speaker sensing/protection to deliver high
    SPL using micro-speaker
  • Attaches to AM335x-based BeagleBone™ Black Wireless to support optional Cloud connectivity

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Schematic/Block Diagram

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Design Files

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TI Devices (13)

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Part Number Name Product Family Sample & Buy Design Kits & Evaluation Modules
CSD23280F3  -12V, P ch NexFET MOSFET™, single LGA 0.6x0.7, 116mOhm  MOSFETs  Sample & Buy View Design Kits & Evaluation Modules
SN74LVC1G126  Single Bus Buffer Gate With 3-State Outputs  Buffer/driver  Sample & Buy View Design Kits & Evaluation Modules
TAS2557  5.7W Digital Input Smart Amp with Integrated Speaker Protection, Advanced EQ and 8.5V Class-H Boost  Audio amplifiers  Sample & Buy View Design Kits & Evaluation Modules
TLV320ADC3101  92-dB SNR low-power stereo ADC with digital microphone support and miniDSP  Audio converters  Sample & Buy View Design Kits & Evaluation Modules
TMS320C5517  TMS320C5517 low-power digital signal processor  Digital signal processors (DSP)  Sample & Buy View Design Kits & Evaluation Modules
TPD1E10B06  Single-channel ESD in 0402 package with 10pF capacitance and 6V breakdown  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPD2EUSB30  2-Channel ESD Solution for SuperSpeed USB 3.0 Interface  Circuit protection  Sample & Buy View Design Kits & Evaluation Modules
TPD6F003  6-Channel EMI Filter for Display Interface  Circuit protection  Sample & Buy Not Available
TPS22912C  5.5V, 2A, 61mΩ Load Switch With Reverse Current Protection  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS22915  5.5V, 2A, 38mΩ Load Switch With Quick Output Discharge  Power switches  Sample & Buy View Design Kits & Evaluation Modules
TPS3850  Precision window supervisor for OV & UV monitoring with window watchdog timer & programmable delay  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS386000  Quad Supply Voltage Supervisors with Programmable Delay and Watchdog Timer  Power management  Sample & Buy View Design Kits & Evaluation Modules
TPS65023  Power Management IC (PMIC) with 3DC/DCs, 3 LDOs, I2C Interface and DVS  Power management  Sample & Buy View Design Kits & Evaluation Modules

CAD/CAE symbols

Part # Package | Pins CAD File (.bxl) STEP Model (.stp)
SN74LVC1G126 Download Download
Download Download
Download Download
Download -
Download Download
Download Download
TLV320ADC3101 Download Download
TMS320C5517 Download -
TPD1E10B06 Download Download
TPD2EUSB30 Download Download
TPD6F003 Download -
TPS22912C Download -
TPS22915 Download -
TPS3850 Download Download
TPS386000 Download -
TPS65023 Download Download

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Technical Documents

See the Important Notice and Disclaimer covering reference designs and other TI resources.

User guides (1)
Title Type Size (KB) Date
PDF 7967 25 Oct 2018
Design files (6)
Title Type Size (KB) Date
ZIP 1589 24 Oct 2018
ZIP 3682 24 Oct 2018
ZIP 1926 24 Oct 2018
ZIP 428 24 Oct 2018
ZIP 285 24 Oct 2018
ZIP 893 24 Oct 2018

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