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以面向无线应用的高性能音频编解码算法设计为目标,基于蓝牙SBC算法编解码框架,采用近似重构的原型滤波器和动态比特分配技术来改善音质和性能。该算法在自主32位CK510MCU平台上实现并优化,并应用于实际无线音频方案设计中。实验结果表明,在码流和功耗损失较小的情况下,采用该算法的无线音频方案音质比原始SBC得到了显著提高。
Based on the Bluetooth SBC algorithm codec framework, aiming at the design of high performance audio codec algorithm for wireless applications, approximate reconstruction prototype filter and dynamic bit allocation technology are used to improve the sound quality and performance. The algorithm in the independent 32-bit CK510MCU platform to achieve and optimize, and applied to the actual design of wireless audio solutions. Experimental results show that the sound quality of the wireless audio scheme using this algorithm is significantly higher than that of the original SBC under the condition of low bit rate and power loss.