Vendor: Packetcraft, Inc. Category: Audio Codec

LC3 / LC3plus Bluetooth LE Audio Codecs for Arm Cortex M55

One of the key characteristics of Bluetooth LE Audio is the new high performing standards-based LC3 audio codec.

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Overview

One of the key characteristics of Bluetooth LE Audio is the new high performing standards-based LC3 audio codec. LE Audio requires the LC3 codec which supports scaling from 345kbps to just 16kbps while ensuring high-quality audio in both congested radio environments and at long distances. LC3 is both higher quality and more efficient than the SBC codec used in Classic Audio. LC3 aims to reduce dependency on proprietary codecs that supplemented SBC but don’t offer multi-vendor interoperability, which is necessary for applications like Auracast™ broadcast audio.
 
Packetcraft LC3 supports demanding audio use cases running multiple codec instances on a single processor, without requiring a dedicated DSP. LC3 is part of the overall LE Audio solution offered by Packetcraft, and when combined with Packetcraft Host and Packetcraft Controller, licensees receive a comprehensive, fully-integrated Bluetooth LE Audio solution from a single software supplier.

Packetcraft LC3 is highly optimized for Arm® Cortex® processors and can be used with your preferred Bluetooth SoC complemented with exceptional engineering support.

Also available is Packetcraft LC3 Tester, a companion test tool which allows the Packetcraft LC3 codec to be validated, characterized, and qualified on a target hardware platform.

Key features

  • Bluetooth SIG Qualified
  • Production proven IP, extensively tested, commercially shipping
  • High-Quality Audio with LC3 Codec
  • 7.5ms and 10ms frame lengths
  • All sample rates: 8, 16, 24, 32, 44.1, and 48kHz
  • Compressed bitrates: 16kbps-320kbps (10ms frame) / 21.3kbps-426.6kbps (7.5ms frame)  
  • 16, 24, and 32-bit input samples  
  • Packet loss concealment (LC3 specification standard)  
  • External rate control
  • Multiple instances of encoder and decoder  
  • 2.5ms and 5ms LC3plus frame lengths (optional add-on)

Block Diagram

PC-BLE-LC3-M55 block diagram

Benefits

  • Highly optimized for Arm® Cortex®-M4, M33, M55 and others as requested
  • CPU efficiency and performance delivering high-quality audio
  • Complete Bluetooth LC3 feature set for varied audio applications
  • Supports advanced LC3plus features for ultra-low latency
  • Bluetooth® qualified accelerates TTM

Applications

  • Hearing aids
  • Earbuds & headsets
  • Microphone & speaker
  • Talking sensors
  • Audio source devices (tablet, camera, etc.)
  • Auracast™ broadcast audio infrastructure

What’s Included?

  • API source code files
  • Codec full source code or object code library (license tier)
  • Make files
  • API documentation
  • User’s guide and release notes
  • Product Versions
    • Fixed point math optimized for Arm Cortex-M4 & M33
    • Fixed point math optimized for Arm Cortex-M55
  • Packetcraft LC3 is qualified to the Bluetooth LC3 specification v1.0.
  • Fully qualified and listed with the Bluetooth SIG, QDID is 175925.

Files

Product Sheet Download

Note: some files may require an NDA depending on provider policy.

Specifications

Identity

Part Number
PC-BLE-LC3-M55
Vendor
Packetcraft, Inc.
Type
Silicon IP

Provider

Packetcraft, Inc.
HQ: United States
Packetcraft delivers production-ready “baseband to application” embedded software, including full source code, to meet the constant evolution of short-range wireless technologies including Bluetooth LE and UWB. Packetcraft solutions enable semiconductor and product companies to achieve greater product differentiation with more features and customization. Headquartered in San Diego and comprised of renowned technology architects and engineers who have been keeping pace with the evolution of Bluetooth for decades, Packetcraft is a supplier and partner to some of the biggest names in wireless with a comprehensive portfolio that implements the latest specs, is extensively tested, and is Bluetooth qualified to ensure fast time-to-market and reduced risk. For more information, visit www.packetcraft.com. To download product briefs, visit: https://www.packetcraft.com/product-briefs.
Contact Packetcraft, Inc.

Learn more about Audio Codec IP core

Paving the way for the next generation audio codec for the True Wireless Stereo (TWS) applications - PART 1 : TWS challenges explained

The audio market for wireless Bluetooth headsets is growing rapidly. Audio devices using Bluetooth (BT) connectivity are more ubiquitous than ever. People have gotten used to wireless audio systems, and the mobile phone industry is pushing towards a world without audio connectors and cables. The latest trend in wireless headsets and speakers is True Wireless Stereo systems (TWS), consisting of two independent units that are each charged in their own charging case.

Frequently asked questions about Audio Codec IP cores

What is LC3 / LC3plus Bluetooth LE Audio Codecs for Arm Cortex M55?

LC3 / LC3plus Bluetooth LE Audio Codecs for Arm Cortex M55 is a Audio Codec IP core from Packetcraft, Inc. listed on Semi IP Hub.

How should engineers evaluate this Audio Codec?

Engineers should review the overview, key features, supported foundries and nodes, maturity, deliverables, and provider information before shortlisting this Audio Codec IP.

Can this semiconductor IP be compared with similar products?

Yes. Buyers can compare this product with similar semiconductor IP cores or IP families based on category, provider, process options, and structured technical specifications.

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