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Igor S. Ramos

Engineer / Maker

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Category: internet of things

Posted on August 24, 2016November 18, 2017

Comparison of WAV, FLAC and OGG audio formats: size and latency

When using IBM Watson Speech to Text (STT) and Text to Speech (TTS) services for my Cognitive Candy project I started off using WAV file format.  That was the easy choice since WAV is a raw audio format requiring no additional software for encoding. Continue reading “Comparison of WAV, FLAC and OGG audio formats: size and latency”

Posted on August 7, 2016November 18, 2017

Serverless Node-Red applications with OpenWhisk and Docker

IBM recently launched a service called OpenWhisk; a distributed compute service to execute application logic in response to events. The most notable advantages of such serverless framework is: Continue reading “Serverless Node-Red applications with OpenWhisk and Docker”

Posted on August 3, 2016November 18, 2017

Wake-Up-Word Speech Recognition on a Raspberry Pi with PocketSphinx

In this article, I describe how I implemented Wake-Up-Word Speech Recognition on a Raspberry Pi with PocketSphinx. Continue reading “Wake-Up-Word Speech Recognition on a Raspberry Pi with PocketSphinx”

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