A method and a device for audio coding are disclosed.
本发明揭示一种用于声频编码之方法及装置。
Lossless audio coding was widely used in the processing of audio signal.
在语音信号处理的许多应用中，采用了无损音频压缩的方法。
Perceptual audio coding is the mainstream technology for the storage and trans-mission of audio signals.
感知音频编码是音频信号存储和传输的主流技术。
This paper introduces some kinds of audio coding method, gives the comparison among them, and shows their applications.
文中介绍了几种常用的多通道压缩音频编码方式的原理，并比较了它们的异同、压缩码率以及实际中的应用。
However, the audio coding technology for ultra wideband mostly USES perceptual coding which is based on the psychoacoustic model.
而带宽范围较宽的音频编码采用的则多是基于心理声学的感知编码技术。
Combined with perceptual audio coding technology, digital audio water-marking technology embeds watermark data into audio signals.
数字音频水印技术和感知音频编码技术相结合，在音频信号中嵌入水印数据。
The proposed invention offers a low-complexity, intermediate quality HFR method useful in speech and natural audio coding applications.
本发明提供一种可应用于语音和自然音频编码的低复杂性，中级质量HFR方法。
To achieve fine imperceptible characteristic, the audio model in widely used audio coding theory is introduced into the audio data hiding research.
为了达到隐藏后信号良好的听觉不可感知性，引入了音频编码理论中广泛使用的听觉模型用于音频数据隐藏研究。
Simultaneous masking which is an important research content of psychoacoustic, have a wide range of applications in audio coding, speech enhancement and so on.
同时掩蔽是心理声学的重要研究内容，在音频压缩编码、语音增强等方面有着广泛的应用。
In perceptual audio coding with low bit rate application, the pre-echo artifact is more distinct, and the effective detection of transient signals is the precondition.
在低比特率音频感觉编码中，预回声失真更为突出，而对其处理的前提是瞬态信号的有效检测。
Because of considering the temporal masking effects to set up a threshold and the valid hop size of transient points, this method is very suitable for perceptual audio coding.
由于考虑了时域掩蔽效应来设置检测门限和有效瞬态点间隔，非常适用于感觉音频编码。
Rate-distortion control algorithm in MPEG-4 AAC(Advanced Audio Coding) needs to search Huffman code books many times to obtain the reference number of the current consumed bits.
AAC的码率失真控制算法需要多次检索霍夫曼码书以获得当前状态比特消耗的参考值。
Rate-distortion control algorithm in MPEG-4 AAC(Advanced Audio Coding) needs to search Huffman code books many times to obtain the reference number of the current consumed bits.
AAC的码率失真控制算法需要多次检索霍夫曼码书以获得当前状态比特消耗的参考值。
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