Multirate systems and filter banks
Multirate systems and filter banks
Speech Coding and Synthesis
Linear Prediction of Speech
Time-domain coding of (near) toll quality speech at rates below 16 kb/s (linear prediction, multi-pulse)
A 6Kbps to 85Kbps scalable audio coder
ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 02
Parametric coding of stereo audio
EURASIP Journal on Applied Signal Processing
Low bit-rate speech coders for multimedia communication
IEEE Communications Magazine
Extended AMR-WB for high-quality audio on mobile devices
IEEE Communications Magazine
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This paper introduces a new audio and speech broadband coding technique based on the combination of a pulse excitation coder and a standardized parametric coder, namely, MPEG-4 high-quality parametric coder. After presenting a series of enhancements to regular pulse excitation (RPE) to make it suitable for the modeling of broadband signals, it is shown how pulse and parametric codings complement each other and how they can be merged to yield a layered bit stream scalable coder able to operate at different points in the quality bit rate plane. The performance of the proposed coder is evaluated in a listening test. The major result is that the extra functionality of the bit stream scalability does not come at the price of a reduced performance since the coder is competitive with standardized coders (MP3, AAC, SSC).