# An Enhanced Interleaving Frame Loss Concealment Method for Voice Over IP Network Services

## TL;DR

This paper proposes an improved frame loss concealment method for G.722.2 speech codec in VoIP networks, enhancing speech quality during burst frame losses while maintaining compatibility with standard decoders.

## Contribution

It introduces a novel PLC algorithm that utilizes unused bandwidth for better speech recovery, improving quality under burst loss conditions.

## Key findings

- Achieves PESQ > 2 at 20% frame erasure rate
- Improves speech quality during burst frame loss
- Maintains compatibility with standard G.722.2 decoders

## Abstract

This paper focuses on AMR WB G.722.2 speech codec, and discusses the unused bandwidth resources of the senders by using a Word16(16 bit) to encode the sent frames. A packet loss concealment (PLC) method for G.722.2 speech codec is proposed in order to overcome this problem and increases the efficiency of this codec by improving the quality of decoded speech under burst frame loss conditions over frame-switched networks. Objective and subjective experimental results confirm that our proposed algorithm could achieve better speech quality. Our proposed method achieves a PESQ value higher than 2 at 20% frame erasure rate and ensure the compatibility between our modified decoder and the non-modified G.722.2 coder.