| 摘要 |
In encoding digital audio signals (for transmission) by a perceptual audio encoding method, involving implementing a psycho-acoustic model (PAM) on a frame of audio data which produces a set of "allowed" distortion for each listening band of the human ear, converting the frame of audio data from the time to the frequency domain and dividing it into the listening bands, and converting the frequency amplitude values into a set of bits, an improved algorithm (Fig.4, not shown) is used to obtain an optimal quantisation factor (QF) for implementing the latter task. |
