Wake Word Model

Creating a wake word model involves several steps, and the approach you take can vary depending on your resources, desired level of customization, and technical expertise. Here's a general overview:

1. Choose your wake word:

• Pick a unique word or short phrase (2-4 syllables) unlikely to be confused with other words or background noise.
• Consider cultural implications and ease of pronunciation across accents.

2. Data collection:

• Record high-quality audio samples of your chosen wake word spoken by diverse voices (age, gender, accent).
• Collect negative examples of background noise and non-wake words for contrast.

3. Data preprocessing:

• Clean audio recordings by removing silence and noise.
• Extract features like Mel-Frequency Cepstral Coefficients (MFCCs) for machine learning models.

4. Model training:

• Choose a suitable machine learning model like Convolutional Neural Networks (CNNs) or Recurrent Neural Networks (RNNs).
• Train the model on labeled data (wake word vs. non-wake word) to distinguish your chosen phrase.
• Consider using pre-trained models and fine-tuning them for your specific wake word.

5. Evaluation and Refinement:

• Test the model's performance with unseen data to assess accuracy and false activation rates.
• Refine the model by adding more data, adjusting hyperparameters, or trying different architectures.

Additional considerations:

• Complexity: Creating a high-performance wake word model from scratch requires expertise and resources. Consider pre-built frameworks or tools like Mycroft Precise or Espressif's ESP-IDF for easier implementations.
• Privacy: If collecting user data, ensure ethical practices and data security.

Here are some helpful resources to get you started:

• Precise Wakeword Model Maker: https://github.com/topics/3d-modelling
• Building a custom wake word detector: https://dacus-augustus.medium.com/building-a-custom-wake-word-detector-and-a-voice-command-engine-690c35398943
• Custom Wake Word Part 1 & 2: https://www.youtube.com/watch?v=kedVnIInXoo
• Create your own wake word (Home Assistant): https://www.home-assistant.io/voice_control/create_wake_word/