Acquiring audio data with a smartphone
As for all ML problems, data acquisition is the first step to take, and Edge Impulse offers several ways to do this directly from the web browser.
In this recipe, we will learn how to acquire audio samples using a mobile phone.
Getting ready
Acquiring audio samples with a smartphone is the most straightforward data acquisition approach offered by Edge Impulse because it only requires a phone (Android phone or Apple iPhone) with internet connectivity.
However, how many samples do we need to train the model?
Collecting audio samples for KWS
The number of samples depends entirely on the nature of the problem—therefore, no appraoch fits all. For a situation such as this, 50 samples for each class could be sufficient to get a basic model. However, 100 or more are generally recommended to get better results. We want to give you complete freedom on this choice. However, remember to get an equal number of samples for each class...
