Improving accuracy on npd120 model

Question/Issue:
[Describe the question or issue in detail]
Even after adding an external dataset my accuracy is below 40%
Project ID:
[Provide the project ID]
AS4065U-project-1
Context/Use case:
[Provide context or use case where the issue is encountered]

Steps Taken:

  1. [Step 1] Made my own dataset
  2. [Step 2] Downloaded an external dataset
  3. [Step 3] Added my recordings to the dataset downloaded

Expected Outcome:
[Describe what you expected to happen]
I would like my accuracy to be closer to 100%.
Actual Outcome:
[Describe what actually happened]
The accuracy is below 40% no matter the changes
Reproducibility:

  • [X] Always
  • [ ] Sometimes
  • [ ] Rarely

Environment:

  • Platform: [e.g., Raspberry Pi, nRF9160 DK, etc.]
    Arduino Nicla Voice

  • Build Environment Details: [e.g., Arduino IDE 1.8.19 ESP32 Core for Arduino 2.0.4]
    Arduino IDE

  • OS Version: [e.g., Ubuntu 20.04, Windows 10]
    Windows 11 Home

  • Edge Impulse Version (Firmware): [e.g., 1.2.3]

  • To find out Edge Impulse Version:

  • if you have pre-compiled firmware: run edge-impulse-run-impulse --raw and type AT+INFO. Look for Edge Impulse version in the output.

  • if you have a library deployment: inside the unarchived deployment, open model-parameters/model_metadata.h and look for EI_STUDIO_VERSION_MAJOR, EI_STUDIO_VERSION_MINOR, EI_STUDIO_VERSION_PATCH

  • Edge Impulse CLI Version: [e.g., 1.5.0]

  • Project Version: [e.g., 1.0.0]

  • Custom Blocks / Impulse Configuration: [Describe custom blocks used or impulse configuration]
    Logs/Attachments:
    [Include any logs or screenshots that may help in diagnosing the issue]
    Additional Information:
    [Any other information that might be relevant]
    Dataset MLend_numbers