mlsanityData to 14 Oct 2026

A Real-Time Wideband Neural Vocoder at 1.6 kb/s Using LPCNet

arXiv 1903.12087 ↗First posted 28 Mar 2019eess.AS cs.LG cs.SDcited by 16

Not on the map. Why?

Abstract (arXiv)

Neural speech synthesis algorithms are a promising new approach for coding speech at very low bitrate. They have so far demonstrated quality that far exceeds traditional vocoders, at the cost of very high complexity. In this work, we present a low-bitrate neural vocoder based on the LPCNet model. The use of linear prediction and sparse recurrent networks makes it possible to achieve real-time operation on general-purpose hardware. We demonstrate that LPCNet operating at 1.6 kb/s achieves significantly higher quality than MELP and that uncompressed LPCNet can exceed the quality of a waveform codec operating at low bitrate. This opens the way for new codec designs based on neural synthesis models.

Key facts. Cited by 16 papers in the map (data through 14 Oct 2026). First posted on arXiv 28 Mar 2019.

Builds on

No reference list yet.

Built on by

Cited by year (2026 to 14 Oct)

Citing papers per year: 2021: 6; 2022: 4; 2023: 2; 2024: 2; 2025: 1; 2026: 1.

16 papers.

Sort:

By area:

  1. 2022High Fidelity Neural Audio Compressioncited by 687
  2. 2021Speech Resynthesis from Discrete Disentangled Self-Supervised Representationscited by 243
  3. 2021A Survey on Neural Speech Synthesiscited by 184
  4. 2022WaveFit: An Iterative and Non-autoregressive Neural Vocoder based on Fixed-Point Iterationcited by 20
  5. 2025FlowDec: A flow-based full-band general audio codec with high perceptual qualitycited by 15
  6. 2023Generative De-Quantization for Neural Speech Codec via Latent Diffusioncited by 9
  7. 2021Enhancing into the codec: Noise Robust Speech Coding with Vector-Quantized Autoencoderscited by 7
  8. 2021HARP-Net: Hyper-Autoencoded Reconstruction Propagation for Scalable Neural Audio Codingcited by 7
  9. 2021Scalable and Efficient Neural Speech Coding: A Hybrid Designcited by 5
  10. 2021A Streamwise GAN Vocoder for Wideband Speech Coding at Very Low Bit Ratecited by 5
  11. 2022NESC: Robust Neural End-2-End Speech Coding with GANscited by 3
  12. 2024FlowMAC: Conditional Flow Matching for Audio Coding at Low Bit Ratescited by 3
4 more
  1. 2024Neural Speech and Audio Coding: Modern AI Technology Meets Traditional Codecscited by 2
  2. 2023AudioFormer: Audio Transformer learns audio feature representations from discrete acoustic codescited by 1
  3. 2026The Equalizer: Introducing Shape-Gain Decomposition in Neural Audio Codecscited by 1
  4. 2022Neural Speech Synthesis on a Shoestring: Improving the Efficiency of LPCNetcited by 0