In this demonstration, we present an implementation of a modular synthesizer in Haskell using Yampa. A synthesizer, be it a hardware instrument or a pure software implementation, as here, is said to be modular if it provides sound-generating and sound-shaping components that can be interconnected in arbitrary ways. Yampa, a Haskell-embedded implementation of Functional Reactive Programming, sup...

High costs, bulkiness, and larger power consumption makes transceiver integration and miniaturization a desired option to discretely implemented transceivers. Furthermore, a frequency synthesizer forms an important part of high-frequency transceivers. In this paper, the design of a fully-integrated dual loop frequency synthesizer is detailed. Previously, frequency synthesizers have already been...

For more than the past twenty years, Csound has been one of the leaders in the world of the computer music research, implementing innovative synthesis methods and making them available beyond the academic environments from which they often arise, and into the hands of musicians and sound designers throughout the world. In its present state, Csound offers an efficient environment for sound exper...

Current state-of-the-art speech synthesizers for domain-independent systems still struggle with the challenge of generating understandable and natural-sounding speech. This is mainly because the pronunciation of words of foreign origin, inflections and compound words often cannot be handled by rules. Furthermore there are too many of these for inclusion in exception dictionaries. We describe an...

The quest for ever-shorter optical pulses has been ongoing over half a century. Although few-cycle have generated nearly 40 years, pulse lengths below the single-cycle limit remained an elusive goal long time. For this purpose, waveform synthesizers, generating high-energy, high-average-power via coherent combination of multiple covering different spectral regions, recently developed. They allo...

In almost 30 years of operation, the Very Large Array (VLA) has proved to be a remarkably flexible and productive radio telescope. However, the basic capabilities of the VLA have changed little since it was designed. A major expansion utilizing modern technology is currently underway to improve the capabilities of the VLA by at least an order of magnitude in both sensitivity and in frequency co...

This work presents and estimates the break-lock in phase locked loop (PLL) synthesizers for monopulse radar applications through experimental measurements and computer simulation. Sinusoidal continuous wave (CW) and linear frequency modulated (LFM) signals are used as repeater jamming signals. The CW jamming signal power as a function of radar echo signal power at break-lock is estimated for di...

High-resolution low-power Direct Digital Frequency Synthesizers (DDFS) with small chip area are investigated. Lookup tables for sine and cosine yield the leading bits of the amplitudes. A CORDIC interpolation scheme enhances the amplitude precision. Systematic case studies using VHDL – models and synthesis indicate, that optimum LUT/CORDIC ratios can minimize use of power and silicon area. Intr...