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Tag: synthesizer
Randomwaves Drumboy and Synthgirl are Open-Source, ARM-Powered Grooveboxes for Music Creation
Randomwaves introduces Drumboy and Synthgirl, two new handheld instruments designed to make music creation accessible and fun. These devices are built around an ARM Cortex-M7 processor which includes a 24-bit true audio generator and a 5.0" LCD TFT screen, along with open-source code...
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PiOSCBOX: A Raspberry Pi based audio processor and synthesizer
Raspberry Pi carries a lot of horsepower inside to handle the realtime audio and add some effects to it. The only limitation is it does not have a built-in sound card, but it is manageable using an external USB soundcard. PiOSCBOX is an attempt to make a low-cost, stand-alone audio...
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Inverter crystal oscillator
Vasily Ivanenko build some discrete chip oscillators with 74HC series logic gates and tests them on his oscilloscope. He writes: In numerous RF synthesizer chips lies an inverter with input and output pins for making a reference crystal oscillator clock. I built some discrete chip...
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VXO – based PLL frequency synthesizer for 7 MHz
Vasily Ivanenko made a VXO-based synthesizer: To make a VXO to mix with a ~7 MHz VCO, you’ll need a crystal that is higher in frequency than the highest frequency you want to synthesize. Some rummaging revealed a bag of 21.4773 MHz crystals that I could divide by 3 to garner 7.159...
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Polyphonic FM Synthesizer with STM32F031
ihsan Kehribar @ blog.kehribar.me has been working on a MIDI capable, polyphonic FM synthesizer using an 32bit ARM Cortex M0 microcontroller and an audio codec. Polyphonic FM Synthesizer with STM32F031 -...
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8V97051 Low Power Wideband Fractional RF Synthesizer
This design features a low power wideband RF synthesizer that is used in GSM receiver cards. It has dual differential and open drain outputs with frequency range of 34.375MHz to 4400MHz(in continuous range). The logic compatibility is 1.8V while the system is running on a single 3.3V...
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8T49NS010 Clock Synthesizer and Fanout Buffer/Divider
This reference design features the 8T49NS010 integrated circuit that functions as a clock synthesizer with a built-in fanout buffer and divider. By using an external clock source or a crystal, the 8T49NS010 can generate high performance timing geared towards the communications and...
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