A codec for compression of music signals is proposed. The method belongs to the class of transform lossy compression. It is conceived to be applied in the high quality recovery range though. The transformation, endowing the codec with its distinctive feature, relies on the ability to construct high quality sparse approximation of music signals. This is achieved by a redundant trigonometric dictionary and a dedicated pursuit strategy. The potential of the approach is illustrated by comparison with the OGG Vorbis format, on a sample consisting of clips of melodic music. The comparison evidences remarkable improvements in compression performance for the identical quality of the decompressed signal.

翻译：提出了压缩音乐信号的编码器。 该方法属于变压损失压缩类。 其设想是用于高质量的恢复范围。 变换, 赋予调制解调器独特的特性, 取决于建立高质量的微小音乐信号近似功能的能力。 实现这一点的方法是多余的三角词典和专用的追寻策略。 与OGG Vorbis 格式相比, 该方法的潜力通过由旋律曲剪辑组成的样本来说明。 比较表明, 压抑信号质量相同的压缩性能显著改善 。