Arduino
Arduino Audio Tools – Multicore Processing
So far I never needed to use any of the ESP32 multicore functionality because all the examples are very simple and everything is fitting on a single core. However if you write some more complex scenarios which are e.g. updating a screen, process user input w/o impacting the audio, you Read more…
Arduino
Pitch Shifting with the Arduino Audio Tools
I had some pitch shifting effect on my to-do list for a long time now and finally managed to provide this in my Arduino Audio Tools Library. Pitch shifting is the functionality to change the pitch of an input signal w/o changing the length. If you use a higher pitch Read more…
Arduino
ESpeak and MBROLA ?
MBROLA is a speech synthesizer based on the concatenation of diphones. It takes a list of phonemes as input, together with prosodic information (duration of phonemes and a piecewise linear description of pitch), and produces speech samples on 16 bits (linear), at the sampling frequency of the diphone database. Today Read more…
Arduino
ESpeak-NG for Arduino: Setting the Voice
It was quite a challenge to convert eSpeak NG to an Arduino Library. In the meantime I managed to publish a first round of error corrections. The eSpeak NG is a compact open source software text-to-speech synthesizer for Linux, Windows, Android and other operating systems. It supports more than 100 Read more…
Arduino
Text to Speech for more then 100 Languages on an Arduino
It was quite a challenge to convert eSpeak NG to an Arduino Library. The eSpeak NG is a compact open source software text-to-speech synthesizer for Linux, Windows, Android and other operating systems. It supports more than 100 languages and accents. It is based on the eSpeak engine created by Jonathan Read more…
Arduino
ESpeak-NG: The difficult journey to an Arduino Library
I converted eSpeak NG to an Arduino Library. The eSpeak NG is a compact open source software text-to-speech synthesizer for Linux, Windows, Android and other operating systems. It supports more than 100 languages and accents. It is based on the eSpeak engine created by Jonathan Duddington. eSpeak NG uses a Read more…
Arduino
FreeRTOS-addons a C++ API on Arduino
Standard FreeRTOS uses C based API. However I prefer to have some lean C++ abstractions. That’s when I discovered the freertos-addons project from Michael Becker. I have converted it to an Arduino Library, so that it can be used e.g. on an ESP32. I also added a new Task class Read more…
Arduino
Guitar Effects Controlled By A Web GUI
Quite some time ago, I have demonstrated how to build some Guitar Effects with my Arduino Audio Tools. In the last couple of blogs, I showed how to build an interactive web dialog with my TinyHttp library. Finally it is time to put the two approaches together into one single Read more…
Arduino
TinyHttp – Storing Html on an External Server
In my last Blog, I was showing how we can process html forms with the Arduino TinyHttp library. In the examples we were embedding the html into the source code. Sometimes however it is more convenient to store the html as files on a dedicated server: In the following examples Read more…