Speex: A Free Codec For Free Speech

Abstract

The Speex project has been started in 2002 to address the need for a free, open-source speech codec. Speex is based on the Code Excited Linear Prediction (CELP) algorithm and, unlike the previously existing Vorbis codec, is optimised for transmitting speech for low latency communication over an unreliable packet network. This paper presents an overview of Speex, the technology involved in it and how it can be used in applications. The most recent developments in Speex, such as the fixed-point port, acoustic echo cancellation and noise suppression are also addressed.

arXiv commentPresented at linux.conf.au 2006, Dunedin. 8 pages

References in corpus (1)

• Bandwidth Extension of Narrowband Speech for Low Bit-Rate Wideband Coding

Cited by in corpus (4)

• Low Bit-Rate Speech Coding with VQ-VAE and a WaveNet Decoder
• Acoustic Echo Cancellation by Combining Adaptive Digital Filter and Recurrent Neural Network
• MFCCGAN: A Novel MFCC-Based Speech Synthesizer Using Adversarial Learning
• Efficient And Scalable Neural Residual Waveform Coding With Collaborative Quantization