For further information contact your local STMicroelectronics sales office.

September 2012

Doc ID 023685 Rev 1

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STEVAL-MKI126V3

STSmartVoice demonstration board

Data brief

Features

board

microphones

programmable biquads per channel

with:

– STEVAL-MKI129V1/V2/V3

– STEVAL-MKI131V1/V2/V3

– STEVAL-MKI116V1

– STEVAL-MKI117V1/V2

– STEVAL-CCA035V1

Description

The STEVAL-MKI126V3 demonstration board

allows the connection of up to six microphones

using the sockets provided, or through the

connection of a dedicated six-microphone array.

The digital interface of the board allows the

interfacing of the MIC output to the most widely

used audio receivers and digital amplifiers, or

permits evaluation of the MIC with generic audio

measurement equipment. The filtered PWM

signals allow the connection of a headset to listen

to audio received through the microphones.

The fully digital path ensures a high level of

processing with sound preconditioning, filtering

and voice enhancement.

The main function of the STEVAL-MKI126V3 is to

convert the PDM signals from the microphones

interface connector. appropriately filtered PWM

signals provide an analog interface.

The STEVAL-MKI126V3 is equipped with two

MP34DT01 microphones and an STA321MPL

scalable digital microphone processor.

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