imxrt1050

Porcupine Wake Word Engine Demo for IMXRT1050-EVKB (Multiple languages)

This package contains a demo project for the i.MX RT1050 Evaluation Kit using Porcupine wake word engine.

Supported Languages

1. Arabic
2. Dutch
3. English
4. French
5. German
6. Hindi
7. Italian
8. Japanese
9. Korean
10. Mandarin
11. Polish
12. Portuguese
13. Russian
14. Spanish
15. Swedish
16. Vietnamese

• Support for additional languages is available for commercial customers on a case-by-case basis.

Installation

For this demo, you need to download and install MCUXpresso IDE, which is an all-in-one multi-OS development tool for NXP MCUs based on Arm Cortex-M cores.

AccessKey

Porcupine requires a valid Picovoice AccessKey at initialization. AccessKey acts as your credentials when using Porcupine SDKs. You can get your AccessKey for free. Make sure to keep your AccessKey secret. Signup or Login to Picovoice Console to get your AccessKey.

Usage

In the demo project, there is a separate build configuration for each supported languages. In order to activate a specific configuration:

1. Click Project > Build Configuration > Set Active
2. Select the target configuration

Then, to compile and run the demo project on a i.MX RT1050 Evaluation board, perform the following steps:

1. Open MCUXpresso IDE
2. From the main toolbar, select Install MCUXpresso SDKs and install evkbimxrt1050 SDK
3. Click File > Open Projects from file system... to display the Import Projects dialog box.Select the imxrt1050-evkb folder from this repository, and then press the Finish button.
4. Replace ACCESS_KEY in both main.c and main_multi.c with your AccessKey obtained from Picovoice Console
5. Click Project > Build Project
6. Connect the board to the computer, select the imported project inside Project Explorer window
7. Click Run > Debug as > MCUXpresso IDE LinkServer probes and then select the connected board.
8. In the debug view, press Run > Resume

For single wake-word demos, you can identify the default keyword for each language by referring to the pv_params.h file. Within this file, locate the language section enclosed by:

#if defined(__PV_LANGUAGE_{LANGUAGE_NAME}__)
...
#endif

The default keyword for each language will be listed next to the // wake-word comment.

For the multiple wake words demo Porcupine, Picovoice, Bumblebee, and Alexa are considered as the keywords.

Create Custom Models

1. Copy the UUID of the board printed at the beginning of the session to the IDE console.
2. Go to Picovoice Console to create a model for Porcupine wake word engine.
3. Select Arm Cortex-M as the platform when training the model.
4. Select IMXRT as the board type and provide the UUID of the chipset on the board.

The model is now being trained. You will be able to download it within a few hours.

Import the Custom Models

1. Download your custom voice model(s) from Picovoice Console.
2. Decompress the zip file. The model for Porcupine wake word is located in two files: A binary .ppn file, and as a .h header file containing a C array version of the binary model.
3. Copy the contents of the array inside the .h header file and update the DEFAULT_KEYWORD_ARRAY in imxrt1050-evkb/inc/pv_params.h in the language section for which the model is trained.