Category: Knowledge

Smart projects for the Raspberry Pi Zero

Use machine learning to uncover the hidden value of audio data

A hidden treasure: Audio is one of the five human senses and carries surprisingly much information. Close your eyes and listen to some sounds nearby. Chances are you can get a pretty good overview of whats going on around you. You can hear cars passing by and count them. You can estimate how fast they…
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Wake-word on Pi Zero

Wake word detection on the Raspberry Pi Zero

Why do we need wake word detection? Wake-word or hot-word detection is an important part of a digital voice interface for two reasons. Transcribing speech to text is a hard task. Usually, voice data is sent to a powerful server which does the transcription. Nobody wants their end device to stream nonstop every sample captured…
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