# High-Quality, Low-Delay Music Coding in the Opus Codec

arXiv: https://arxiv.org/abs/1602.04845 · HTML: https://mlsanity.com/paper/1602.04845/

## Key facts

- Cited by 13 papers in the map (data through 14 Oct 2026).
- First posted on arXiv 15 Feb 2016.

## Built on by (most cited first, 13 of 13)

- [Scaling Transformers for Low-Bitrate High-Quality Speech Coding](https://mlsanity.com/paper/2411.19842/) (2024)
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- [Audio Codec Augmentation for Robust Collaborative Watermarking of Speech Synthesis](https://mlsanity.com/paper/2409.13382/) (2024)
- [PSCodec: A Series of High-Fidelity Low-bitrate Neural Speech Codecs Leveraging Prompt Encoders](https://mlsanity.com/paper/2404.02702/) (2024)
- [BanglaTalk: Towards Real-Time Speech Assistance for Bengali Regional Dialects](https://mlsanity.com/paper/2510.06188/) (2025)
- [RNNoise-Ex: Hybrid Speech Enhancement System based on RNN and Spectral Features](https://mlsanity.com/paper/2105.11813/) (2021)
- [Codec-Robust Attacks on Audio LLMs](https://mlsanity.com/paper/2605.20519/) (2026)
- [Bunched LPCNet2: Efficient Neural Vocoders Covering Devices from Cloud to Edge](https://mlsanity.com/paper/2203.14416/) (2022)
- [Fingerprinting Robot Movements via Acoustic Side Channel](https://mlsanity.com/paper/2209.10240/) (2022)
- [Neural Spectral Band Generation for Audio Coding](https://mlsanity.com/paper/2506.06732/) (2025)
- [A High-Quality and Low-Complexity Streamable Neural Speech Codec with Knowledge Distillation](https://mlsanity.com/paper/2509.13670/) (2025)
- [How to Label Resynthesized Audio: The Dual Role of Neural Audio Codecs in Audio Deepfake Detection](https://mlsanity.com/paper/2602.16343/) (2026)

## Abstract (arXiv)

The IETF recently standardized the Opus codec as RFC6716. Opus targets a wide range of real-time Internet applications by combining a linear prediction coder with a transform coder. We describe the transform coder, with particular attention to the psychoacoustic knowledge built into the format. The result out-performs existing audio codecs that do not operate under real-time constraints.