I added some new figures and adjusted some text about how to drive actuators and how to connect sensors. What is Pulse Width Modulation (PWM) and how does this relate to ‘AnalogWrite’ in your code? How can you make a LED light up when the terminal output is zero?
Take a look here.
The first steps towards the realisation of a real B&K vocoder are made. Just before the Christmas holidays I finished the design of the AMD printed circuit board. This is an Amplitude Demodulator that will be an important part of the setup of the Vocoder.
A more detailed description of the circuit can be found here.
The power-supply is one of the most important parts of an electronic design: it provides your circuit with power. It should be strong enough to provide your circuit with the right amount of current and it should be stable – no fluctuating values. In this compact article I explain the basic of a power supply.
For those of you who want to built a relative simple sine-wave generator, take a look at this circuit (scroll down). For some performances of the Composition department at the Royal Conservatory, we made 6 of these sine-wave generators. They are easy to build and show a relative good quality sine-wave.
This is a photo of the oscilloscope, showing the actual output of the sine-wave generator. Not perfect, but nice!
Some of the recent questions I heard from the students were about filters. The world of filters, whether active or passive, is a complex one. There’s a lot of documentation about this subject and if you have to design a particular filter for a particular frequency, you will encounter quiet complex math. I added some examples of second order LP, HP and Bandpass filters and included some on-line calculators.
Friday 9th of February, I introduced students to the world of the Remote Controlled studio during a 2 hour session at Sonology studio Bea-6. It was an introduction lesson in how to use the RC-studio and how communication can be setup with OpenSoundControl messages (OSC).
Since the big Max/Msp patch that I made for driving the whole setup is quiet a mess (:) when you go out of presentation-mode, I added the core-processes as separate Max/msp patches. In this way it is easier building a patch yourself by adding the core-parts together. You will find patches that can work stand-alone and that generate the right OSC-messages like /v1, /cf, ma, /st and more. Take a look at the download section and find 7 new Max/Msp patches to be experimented with. For more information about the RC-studio, check this.
Example of the ADSR module drive: