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Spatial audio IC simplifies soundstage design in portables

Texas Instruments has announced the LM48901 quad Class-D spatial array IC that uses distributed sound processing combined with loudspeaker array technology to enable spatially-enhanced audio systems for multi-speaker portable products and space-constrained applications. The device is intended to simplify the design and programming of such systems and to produce an immersive cinematic audio experience for consumers.

The first in a family of devices, the LM48901 and its companion software feature easy-to-use audio effect programming that can be deployed across a range of products with from two to 16 speakers. The Web-based software tool includes a speaker array coefficient generator that creates unique spatial audio coefficients in a few steps. Also included are Android drivers with an application note, and an evaluation board with GUI.

Key features include:

  • Integrated spatial processing DSP
  • No algorithm tuning required
  • 18-bit stereo ADC
  • I2 S and I2 C interfaces
  • Multiple ICs can be daisy-chained to support up to 16 speaker channels
  • Supports multiple subwoofer configurations
  • Integrated 2-W speaker drivers

The LM48901 is available in both a 3.2 x 3.4-mm micro 36-pin SMD and in a 32-pin 5 x 5-mm LLP. Suggested retail pricing is $2.50 in 1,000-unit quantities.

Texas Instruments , (972) 644-5580, www.ti.com .

Related links:
How spatial audio works (Video, 3:31)
LM48901 video overview (Video, 3:34)
LM48901 information page
LM48901 datasheet (PDF)

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