87 lines
2.6 KiB
Plaintext
87 lines
2.6 KiB
Plaintext
Overview
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========
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The maestro_demo application demonstrates audio processing on the ARM cortex core
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utilizing the Maestro Audio Framework library.
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Depending on target platform there are different features of the demo enabled.
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- loopback from microphone to speaker
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- recording microphone to a file
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- wake words + voice commands recognition
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The application is controlled by commands from a shell interface using serial console.
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Type "help" to see the command list. Similar description will be displayed on serial console:
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>> help
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"help": List all the registered commands
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"exit": Exit program
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"version": Display component versions
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"record_mic": Record MIC audio and either:
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- perform voice recognition (VIT)
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- playback on WM8904 codec
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- store samples to file.
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USAGE: record_mic [audio|file|vit] 20 [en|cn]
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The number defines length of recording in seconds.
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For voice recognition say supported WakeWord and in 3s frame supported command.
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Please note that this VIT demo is near-field and uses 1 on-board microphone.
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NOTE: this command returns to shell after record finished.
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For custom VIT model generation (defining own wake words and voice commands) please use https://vit.nxp.com/
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Toolchain supported
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===================
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- IAR embedded Workbench 9.30.1
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- GCC ARM Embedded 10.3.1
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- MCUXpresso 11.6.0
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Hardware requirements
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=====================
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- Micro USB cable
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- JTAG/SWD debugger
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- EVKB-IMXRT1050 board
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- Personal Computer
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- Headphones with 3.5 mm stereo jack
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Board settings
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==============
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Please insert a SDCARD into card slot(J20)
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Prepare the Demo
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================
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1. Connect a micro USB cable between the PC host and the debug USB port (J41) on the board
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2. Open a serial terminal with the following settings:
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- 115200 baud rate
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- 8 data bits
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- No parity
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- One stop bit
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- No flow control
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3. Download the program to the target board.
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4. Connect the headphones into the headphone jack on EVKB-MIMXRT1050 board (J12).
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5. Either press the reset button on your board or launch the debugger in your IDE to begin running the demo.
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Note:
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There is limited RAM on this platform, which brings following limitations:
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- VIT is not enabled
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Running the demo
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================
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When the example runs successfully, you should see similar output on the serial terminal as below:
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**********************************
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Maestro audio solutions demo start
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**********************************
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[APP_SDCARD_Task] start
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[APP_Shell_Task] start
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SHELL build: Nov 5 2020
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Copyright 2020 NXP
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>> [APP_SDCARD_Task] SD card drive mounted
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