Product category:
Communications ICs (Wired)
News Release from: Acoustic Technologies | Subject: ATH3003
Edited by the Electronicstalk Editorial
Team on 15 June 2004
Speakerphone chip boosts VoIP sound
quality
The ATH3003 is a VoIP full-duplex speakerphone integrated circuit for improved sound quality in VoIP applications.
The ATH3003 is a VoIP full-duplex speakerphone integrated circuit for improved sound quality in VoIP applications The ATH3003 provides full-duplex speakerphone operation with Acoustic Technologies' unique SoundClear technology, dramatically improving voice quality in VoIP telephony applications
This article was originally published on Electronicstalk on 6 Aug 2003 at 8.00am (UK)
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Signal integrity and superior sound quality are achieved through the SoundClear suite of technology and full-duplex control that dynamically monitors, detects and processes incoming voice, echo, and noise signal power levels.
The unique echo cancellation technology is robust to VoIP delay and network imperfections.
"The ATH3003 provides audio signal processing between the digital VoIP to analog user interface domains, bringing our unique SoundClear technology for improved voice quality to VoIP applications", said Sam Thomasson, Acoustic Technologies Chief Executive Officer.
Further reading
Cancellation software extends to C55x DSP designs
SoundClear integrated echo cancellation and noise cancellation DSP software has been certified eXpressDSP compliant by Texas Instruments for the C55x DSP generation.
Kit is speedy route to speakerphone development
The ATR3000DT full-duplex desktop speakerphone reference design and development kit simplify integration and speed time to market.
"According to the tier-one VoIP phone vendors we are working with, the ATH3003 device provides high quality full-duplex speakerphone performance with seamless interface to popular VoIP controllers".
Features of the ATH3003 include 42dB acoustic echo cancellation, 30dB network echo cancellation, up to 12dB noise reduction, graphic equalisers, and sound enhancement.
There is an integrated analogue codec, microphone preamp, and speaker driver for interface to microphone and speaker.
Also, the digital PCM interface provides an easy interface to VoIP controllers compatible with Ethernet, Wi-Fi, or USB, supporting both time-shared and dedicated PCM.
To improve the sound quality and simplify phone system design, the device includes dual 10-band graphic equalisers, comfort noise, and DTMF generation.
Handset and speakerphone call management and programmable ringer tone generation round out the sophisticated set of features on the ATH3003.
The SoundClear-enabled ATH3003 is available for immediate sampling in a 48-pin LQFP package.
The ATH3003 is tunable to specific VoIP phone casings and user preferences.
Acoustic Technologies SoundClear products combine patented acoustic echo cancellation, bidirectional noise reduction, sound enhancement, and far-side anomaly reduction with sophisticated monitoring and control techniques to enable full-duplex speech and improved voice clarity.
The full-duplex operation provides rich, clear, enhanced sound with no clipping or distortion.
SoundClear optimises speech intelligibility with full-duplex control that adaptively monitors, detects and processes incoming voice, echo, and noise signal power levels.
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