What are differences between VoIP codec g.729 and Google Lyra v2?

In 2021, Google announced the Lyra voice codec for low bit rates, combined with the open AV1 codec, can achieve voice chat at a network speed of 56kbps.

Lyra utilizes machine learning and other techniques for very low bitrate speech compression, even working at 3kbps.

Google opened up the code for Lyra last year, and they announced that Lyra V2 is available on Oct. 01, 2022.

What are differences between VoIP codec g.729 and Google Lyra v2?

G.729:

Codec Type: G.729 is a narrowband codec, which means it is designed for low-bitrate voice communication.
Bitrate: G.729 operates at a fixed bitrate of 8 Kbps, making it efficient for conserving network bandwidth.
Quality: It offers good audio quality with relatively low latency, which is suitable for real-time communication applications like VoIP.
Licensing: G.729 is a proprietary codec, which means it may require licensing fees to use in commercial applications.
Compatibility: It is widely supported by VoIP equipment and software, making it a common choice for VoIP deployments.
Bandwidth Efficiency: G.729 is known for its bandwidth efficiency, making it suitable for low-bandwidth network connections.

Google Lyra V2:

Codec Type: Google Lyra is designed as a high-quality, low-bitrate audio codec, making it suitable for various applications, including VoIP.
Bitrate: Lyra V2 offers variable bitrate encoding, which means it can adapt its bitrate based on network conditions and available bandwidth. It can range from as low as 6 Kbps up to higher bitrates, providing flexibility in different network scenarios.
Quality: Google Lyra is known for its impressive audio quality at low bitrates. It uses machine learning techniques to achieve this.
Licensing: As of my last update, Google had made Lyra available as an open-source codec, which means it can be used without licensing fees.
Compatibility: The adoption of Google Lyra may vary, but being an open-source codec, it has the potential to gain wider acceptance in various VoIP software and hardware solutions.
Bandwidth Efficiency: Lyra’s variable bitrate nature allows it to adapt to network conditions, making it efficient in both low and high bandwidth scenarios.

In summary, G.729 is a well-established narrowband codec with a fixed bitrate and good audio quality, but it may require licensing fees for commercial use.

Google Lyra V2, on the other hand, offers variable bitrate encoding, impressive audio quality, and is open-source, potentially making it a compelling option for VoIP applications, especially in situations where bandwidth may fluctuate.

However, the adoption of Lyra may depend on its integration into VoIP platforms and hardware over time.

Does Google Lyra V2 codec support SIP calls?

As of my last knowledge update in September 2021, Google Lyra V2 is primarily an audio codec designed for voice communication and encoding/decoding audio data efficiently. It does not have built-in support for SIP (Session Initiation Protocol) or the ability to handle SIP calls directly.

SIP is a signaling protocol used for initiating, maintaining, modifying, and terminating real-time sessions, such as voice and video calls over IP networks. To make SIP calls, you typically need SIP-compliant software or devices, such as SIP phones or softphones, along with an appropriate SIP server or service provider.

If you want to use Google Lyra V2 as the audio codec for SIP calls, you would need to integrate it into a SIP-based communication system or application.

This would involve implementing the codec within your SIP client or server software to handle the audio encoding and decoding using Lyra V2.

Keep in mind that the availability and compatibility of Google Lyra V2 with SIP-based systems may have evolved since my last update, so it’s a good idea to check the latest information or consult Google’s documentation for any developments related to Lyra V2 and SIP integration.