Low-code-rate audio quality objective evaluation method based on nonlinear parameter fitting
An objective evaluation method and parameter fitting technology, applied in the field of communication, can solve problems such as difficulty in obtaining original audio and high complexity of PEAQ calculation, and achieve the effect of audio quality, real-time calculation, and low calculation complexity
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[0026] In order to make the objectives, technical solutions, and advantages of the present invention clearer, the following further describes the present invention with reference to the drawings.
[0027] image 3 with Figure 4 Shown is a flowchart of the present invention. The specific process is described as follows.
[0028] Step 1. Select 10 segments of audio compression and decompression, and subjectively evaluate and score them, which are used to perform nonlinear parameter fitting in step 3 to obtain fitting coefficients. The length of each audio segment is between 10 seconds and 20 seconds. The types of audio materials include male voice, female voice, castanets, piano, symphony, and film soundtrack. Perform compression at 16kbps, 24kbps, and 32kbps code rates respectively, and subjectively evaluate each segment of audio after compression and decompression, and get the subjective evaluation score of the compressed audio.
[0029] Step 2. Extract audio quality characterist...
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