Product category:
Analogue and Mixed Signal ICs
News Release from: Analog Devices | Subject: AD1954 SigmaDSP
Edited by the Electronicstalk Editorial
Team on 06 December 2001
DSP takes three DACs onboard for digital
audio
Analog Devices has a new digital audio processor designed to bring a rich acoustic experience to cost-conscious consumers of automotive and home stereo systems.
Analog Devices has a new digital audio processor designed to bring a rich acoustic experience to cost-conscious consumers of automotive and home stereo systems While audio sources, such as CD and MiniDisc, have all converted to digital media by now, the technology used in audio processing has remained primarily analogue based
This article was originally published on Electronicstalk on 2 Jul 2008 at 8.00am (UK)
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The first member of the new SigmaDSP family of digital audio processors combines high-performance 112dB DACs with a DSP optimised to execute audio algorithms.
Featuring a high-quality digital audio processing engine configured through an intuitive GUI, the AD1954 SigmaDSP simplifies the digital development process by not requiring any DSP programming expertise and thereby speeds time to market.
The AD1954 provides a rich feature set that improves the sound quality of speakers and eliminates high-volume distortion, thus satisfying the demands of customers who want an optimal audio system at the best possible price.
The AD1954 solves the essential problem of integrating high-performance audio convertors with a DSP optimised for audio processing on a single chip, thereby allowing the signal to remain entirely digital from the audio source to the system output.
Key features include: three channels of digital audio; a seven-band 48bit stereo equaliser; delays for loudspeaker location adjustment; Phat Stereo spatial enhancement; and a dual-band, professional-quality dynamic processor.
Its three DACs achieve 112dB signal-to-noise ratio (SNR) at 48kHz.
Its dynamic processing features include: fine-tuned bass boost to enhance low frequencies for small loudspeakers; algorithms that virtually increase loudness by removing distortion at high volumes; a midnight mode which automatically reduces loudness in high-volume instances (eg sudden loud scenes on DVDs); and low-level expansion to lift low-volume signals above road noise (for car stereos).
The AD1954 SigmaDSP digital audio processor is available in either a 44-pin MQFP or a 48-pin TQFP and is rated for the extended -40 to +105C temperature range.
The AD1954 is sampling now; production begins Q1 2002.
Prices begin at $5.88 in 10,000-piece quantities.
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