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DDS audio generator made from PIC Microcontroller ...
https://circuitsalad.com/2014/06/10/dds-audio-generator-made-from-pic-microcontroller/
The way DDS works is by cycling through a look up table of values representing a sine wave (or any other wave form you choose… a triangle for example). These values range from 0-255 (8bit) and there are 256 values in the table. Each value is loaded into a PWM generator in succession which varies the duty cycle of a roughly 100KHz PWM signal.
Audio Sinewave generator DDS using PIC 18F1320
https://www.romanblack.com/onesec/SineDDS.htm
Xtal-based PIC audio sine generator DDS Using an 18F1320 to generate xtal-locked accurate sinewaves from 5Hz to 20kHz Roman Black - 25th Dec 2011. Christmas sinewave generator! I had been messing with this PIC 18F DDS code for a while, and needed to test my new digital storage 'scope so I spent a few hours tidying up the operation and here it is...
Direct Digital Synthesis (DDS) using PIC16F84 microcontroller
https://pic-microcontroller.com/direct-digital-synthesis-dds-using-pic16f84-microcontroller/
Background. DDS stands for Direct-Digital Synthesis. This synthesizer is simply a circuit that can create a sine- wave signal from a reference crystal and a programable frequency-register. All this circuit needs is a reference oscillator (crystal) and some filter. See fig above: A crystal oscillator (50MHz in my case) is connected to the input ...
PIC Microcontroller as a potential DSP / DDS Element ...
https://www.diyaudio.com/archive/blogs/googlyone/1069-pic-microcontroller-potential-dsp-dds-element.html
This should give me audio bandwidth DDS - with the associated "no bounce" and nice control that software provides, with distortion way down below -100dBc. I have done back of the envelope (read in my head) sums on th operations required to do the DDS, and it will be a shoo in for the PIC32.
Xtal-locked DDS audio sine generator with just a PIC ...
https://www.electro-tech-online.com/threads/xtal-locked-dds-audio-sine-generator-with-just-a-pic-18f1320.124110/
Xtal-locked DDS audio sine generator with just a PIC 18F1320. Thread starter Mr RB; Start date Dec 25, 2011; Status Not open for further replies. Mr RB Well-Known Member. Dec 25, 2011 #1 Hi everybody, here is a PIC-based nice accurate audio sine generator with a good range 5Hz to 20kHz.
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