Elements of information theory
Elements of information theory
Adaptive filter theory (3rd ed.)
Adaptive filter theory (3rd ed.)
Speech Coding and Synthesis
Experimental Evaluation of Two Criteria for Pattern Comparison and Alignment
ICPR '98 Proceedings of the 14th International Conference on Pattern Recognition-Volume 1 - Volume 1
High-resolution voice transformation
High-resolution voice transformation
From remote media immersion to Distributed Immersive Performance
ETP '03 Proceedings of the 2003 ACM SIGMM workshop on Experiential telepresence
Virtual microphones for multichannel audio resynthesis
EURASIP Journal on Applied Signal Processing
Parametric coding of stereo audio
EURASIP Journal on Applied Signal Processing
Analysis of linear prediction, coding, and spectral estimation from subbands
IEEE Transactions on Information Theory
A multichannel sinusoidal model applied to spot microphone signals for immersive audio
IEEE Transactions on Audio, Speech, and Language Processing
| Hi-index | 0.01 |
A multiresolution source/filter model for coding of audio source signals (spot recordings) is proposed. Spot recordings are a subset of the multimicrophone recordings of a music performance, before the mixing process is applied for producing the final multichannel audio mix. The technique enables low bitrate coding of spot signals with good audio quality (above 3.0 perceptual grade compared to the original). It is demonstrated that this particular model separates the various microphone recordings of a multimicrophone recording into a part that mainly characterizes a specific microphone signal and a part that is common to all signals of the same recording (and can thus be omitted during transmission). Our interest in low bitrate coding of spot recordings is related to applications such as remote mixing and real-time collaboration of musicians who are geographically distributed. Using the proposed approach, it is shown that it is possible to encode a multimicrophone audio recording using a single audio channel only, with additional information for each spot microphone signal in the order of 5 kbps, for good-quality resynthesis. This is verified by employing both objective and subjective measures of performance.