Product category:
Programmable Logic Devices
News Release from: Anadigm | Subject: AN227E04 and AN127E04
Edited by the Electronicstalk Editorial
Team on 01 November 2004
Analogue arrays turn to loudspeaker
control
The first two in a new series of application-specific field programmable analogue arrays are devices designed to support high-performance subwoofer speakers.
In a move to offer application-specific versions of its programmable analogue ICs for high-volume markets, Anadigm has launched two new field programmable analogue arrays (FPAAs) designed to support high-performance subwoofer speakers, which are used in audio systems to reproduce the lower bass frequencies with maximum power and fidelity As the first two members of the SonicMaster series of audio-specific FPAA products, the new AN227E04 and AN127E04 support all the functions required by active subwoofers, including the incoming subsonic filter, audio compressor, Linkwitz transform equaliser and lowpass filter
This article was originally published on Electronicstalk on 4 Jan 2001 at 8.00am (UK)
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Development board for programmable analogue arrays
Anadigm - formerly Anadyne Microelectronics - has launched a development and evaluation board for field programmable analogue arrays (FPAAs).
Software puts standard filters on analogue arrays
Anadigm has added filter synthesis to its field-programmable analogue array (FPAA) configuration software.
Typically these functions are designed with discrete components that cannot be tuned or modified once in place.
By contrast, the FPAA implementation puts the subwoofer circuit under software control while maintaining an analogue signal path from front to back.
As a result, manufacturers can tune the circuitry during the manufacturing process to suit the acoustics of various speaker enclosures or provide controls that allow the end user to tune the subwoofer to match personal preferences and the space in which it is being used.
Further reading
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.
Analogue array solves DVD performance problems
The Conradt Measurement and Control development company has designed an innovative analogue lens control solution which dramatically improves the write speed of DVD peripherals.
Software supprts reconfigurable analogue arrays
A breakthrough analogue EDA tool enables the design and implementation of dynamically reconfigurable analogue circuits within a matter of minutes.
This solution also maintains the analogue integrity and pure audio characteristics of the original sound source.
Anadigm makes designing with the AN227E04 and AN127E04 extraordinarily easy by providing a starter kit including AnadigmDesigner2 CAD files in which the subwoofer circuit has already been completed.
Designers can set the parameters of the configurable analogue modules (CAMs) making up the circuit to provide precise control over the sound parameters of their products or can adjust these directly in the C-code automatically generated by AnadigmDesigner2 to simplify interface with the system microprocessor.
The AN227E04 is dynamically reconfigurable, allowing modifications to circuit parameters while in operation.
The device can therefore adapt in real time to changes in the environment where the subwoofer speaker is used.
With this feature, designers could potentially offer end users the ability to alter frequency and roll-off characteristics in their homes for optimal sound quality, or even implement a self-tuning function that would perform this step automatically.
Anadigm's FPAA solutions reduce the design cycle from weeks or months to a matter of days, while allowing a single circuit board implementation to be customised during manufacturing to serve multiple products with different feature sets, thus reducing the range of components that needs to be sourced by OEMs.
"These new SonicMaster FPAAs answer the demand of the audio community for real-time, reprogrammable signal processing under software control while eliminating latency issues and the need to convert signals to and from the digital domain", said Nathan John, Vice President of Worldwide Marketing at Anadigm.
"For the first time, the most advanced design ideas for subwoofers can be implemented quickly, with full control over phasing and perfect repeatability".
"With SonicMasterT FPAAs, we're giving audio engineers a subwoofer solution with the greatest flexibility and highest audio quality available today".
The new SonicMaster FPAAs provide accuracy and control of the filter characteristics to a very high tolerance.
This precision and reliability over standard analogue components is due to better than 0.1% component matching within the IC with no drift over temperature.
Samples and production quantities of the new SonicMaster FPAAs are available now.
Pricing for US delivery in 10,000-piece quantities is $3.15 for the AN127E04 and $3.85 for the AN227E04.
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