DTS® Neo:6 Matrix Decoder

Neo:6 is a DTS propriety algorithm aimed with the primary objective of providing a richer and more natural sound in multi channel derived from a two channel source. It is targeted for applications involving multi-channel A/V receivers so that the single unit can deliver up to seven audio output while still capable of delivering matrix encoded stereo output. Neo:6 adopts the multi channel speaker layout with three front and four surround and back speaker sets. The matrix encoded stereo channels are delivered as Lt and Rt.

The process of subband filtering adopted in Neo:6 provides for separation of multiple dominant signals which eventually reduces the masking of important audio signals by a single dominant signal within a subband. Also by expanding the sound field, Neo:6 can more accurately position audio elements. As a result, signals which otherwise appear to emanate from the same location might appear to emerge from a different point. This provides better directional acoustics to the end user.

DTS® Neo:6 Matrix Decoder

Product Description

Neo:6 is a DTS propriety algorithm aimed with the primary objective of providing a richer and more natural sound in multi channel derived from a two channel source. It is targeted for applications involving multi-channel A/V receivers so that the single unit can deliver up to seven audio output while still capable of delivering matrix encoded stereo output. Neo:6 adopts the multi channel speaker layout with three front and four surround and back speaker sets. The matrix encoded stereo channels are delivered as Lt and Rt.

The process of subband filtering adopted in Neo:6 provides for separation of multiple dominant signals which eventually reduces the masking of important audio signals by a single dominant signal within a subband. Also by expanding the sound field, Neo:6 can more accurately position audio elements. As a result, signals which otherwise appear to emanate from the same location might appear to emerge from a different point. This provides better directional acoustics to the end user.



Features


Functions


Performance Metrics

MIPS summary:

Processor Code memory (KiB) Data RAM (KiB) Constant Data Tables (KiB) MIPS
Average Peak
ADSP-2136x 29 42 5.1 33.47 34.53
ADSP-2146x 21.2 42 5.1 33.73 33.78
  • MIPS measured using Fs = 48kHz, optimal memory layout, worst case test vector, 7 channel output, running on a SHARC ADSP-21369 and ADSP-21469.
  • Code compatible across all SHARC ADSP-2136x/2146x processors, with silicon anomaly workarounds implemented based on ADSP-21369 Silicon Revision 0.2 and ADSP-21469 Silicon Revision 0.0.
  • "Data RAM" for one instance, includes Stack, Scratch, Instance/State, Minimum Input and Output Single Buffers.
  • Input buffer size is 0.5KiB and output buffer size is 1.75 KiB.
  • Frame size considered is 64 samples per channel.
  • The DTS Neo:6 decoder library for the ADSP-2146x platform is built using VISA mode to reduce code size.


Applications


Requirements


Availability and Licensing

Each module supports the Analog Devices, Inc. (ADI) SHARC Processor family and is a licensed product that is available in object code format. Recipients must sign a license agreement with ADI prior to being shipped the modules identified in the license agreement.

Contact your ADI Sales Rep to request this code. If you need to find a Sales Rep in your area, please visit the Sales & Distributor Map/Listing.


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