Product category:
Programmable Logic Devices
News Release from: Anadigm | Subject: FPAAs
Edited by the Electronicstalk Editorial
Team on 09 January 2004
Software control for analogue
synthesiser
At next week's NAMM Show in California, Anadigm will show how its reconfigurable ICs can be used to create the industry's first analogue synthesiser fully integrated with software-based controls.
Making its first public demonstrations of audio applications for field programmable analogue arrays (FPAAs), Anadigm will show how its reconfigurable ICs can be used to create the industry's first analogue synthesiser fully integrated with software-based controls at the NAMM Show booth 1790 at the Anaheim Convention Centre, from 15th to 18th January At the NAMM Show, Anadigm will demonstrate a five-channel crossover filter and an analogue synthesiser based on new reference designs that illustrate the power of adding software interaction to analogue circuits in audio subsystems
This article was originally published on Electronicstalk on 4 Jan 2001 at 8.00am (UK)
Related stories
Development board for programmable analogue arrays
Anadigm - formerly Anadyne Microelectronics - has launched a development and evaluation board for field programmable analogue arrays (FPAAs).
Programmable analogue arrays turn to laser cooling
Anadigm has published an application note detailing how field-programmable analogue arrays (FPAAs) simplify the control of Peltier-effect thermoelectric coolers.
Serving as the silicon platform for both solutions are dynamically reconfigurable FPAAs, the first analogue integrated circuits for audio that can change their parameters in real time or even undergo a complete state change - all so instantaneously as to be inaudible to the most experienced ear.
Anadigm's dynamically programmable five-channel crossover filter design will be demonstrated as applied to an active near-field monitor system.
Run under software control, its latency-free analogue filters can be swept in frequency and amplitude, independently or in synchronisation.
Further reading
Two new approaches to analogue synthesis
Systems design combining SoCs with customer-assembled embedded systems has long been a challenge, says Ian Macbeth, CTO and Vice President Engineering at Anadigm.
Analogue arrays boost thermal tolerance
Intus is using Anadigm's FPAA field programmable analogue array technology in a receiver/tone-decoder system for aerospace applications.
Analogue arrays double processing capability
Two new field programmable analogue arrays (FPAAs) offer twice the processing capability of Anadigm's entry-level device at an aggressive price point.
Implemented in an FPAA, the Linkwitz-Riley filters can be changed instantaneously and inaudibly from 12 to 24dB per octave at the flick of a software switch, allowing the user to tune speaker parameters instantly to suit the speaker enclosure and performance space.
The analogue synthesiser design provides true analogue signalling from self-resonant oscillator circuits through the filtering system to the speakers.
Its twin oscillators offer a variety of waveforms over a full seven-octave range and can be mixed in a monophonic mode or operate separately in a duophonic mode.
The highly scaleable design allows a variety of filter types and audio effects to be implemented under the control of software-based LFO and ADSR controls, which can modulate virtually any parameter of the system, including oscillator pitch, filter frequencies, amplitudes, resonance, and mark-space ratio.
The design allows for plug-ins, full snapshot recovery of synthesiser settings, and full MIDI interfacing to software-based sequencers.
The modular FPAA approach allows the implementation of designs with multiple oscillators and audio channels.
"This is the first time that a true analogue synthesiser has been fully integrated with software-based controls, yet it's just one example of the endless possibilities for audio opened up by dynamically programmable FPAAs," said Brian Hodges, Vice President of Worldwide Marketing at Anadigm.
Using the drag-and-drop AnadigmDesigner2 EDA software, both designs being demonstrated at the NAMM Show required less than two weeks of development work to create a first working prototype.
Both run on a PCB loaded with three Anadigm AN221E04 FPAAs and require no hardware setup changes to switch between the crossover filter and analogue synthesiser functions, since both configurations are entirely software controlled.
A multimedia demonstration of AnadigmDesigner2 v2.4 can be viewed on the Anadigm website, where a free trial copy of AnadigmDesignerR2 v2.4 is also available for download.
A complete evaluation kit with a development board, entry-level software, and updated documentation is now available at a promotional price of $199.
Pricing for FPAA silicon starts at $4.95 in 1000-piece quantities.
• Anadigm: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
