Speech spectrum color enhancement method for speech visualization
A spectrogram and color technology, applied in speech analysis, instruments, etc., can solve the problems of weak expressiveness, single visual effect, difficult to perceive speech, etc., and achieve the effect of easy identification, easy implementation, and simple extraction of parameters.
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[0027] The technical solutions of the present invention will be further described below in conjunction with the drawings and embodiments.
[0028] Such as figure 1 As shown, it is a system block diagram of a spectrogram color enhancement method for speech visualization, which is mainly divided into three blocks: a feature parameter extraction module, a color generation module and a visualization effect graph generation module.
[0029] 1. Feature parameter extraction module:
[0030] Firstly, after the original speech signal is framed and windowed, the short-term energy value of each frame signal in each characteristic frequency band is extracted.
[0031] (1). Divide the effective frequency band of the speech signal into 12 characteristic frequency bands on average. For example, if the sampling rate is 16KHz and the effective frequency band is 0-8KHz, then the 12 characteristic frequency bands are as follows: 4000Hz-4666.67Hz, 4666.67-5333.33Hz, 5333.33-6000Hz, 6000Hz-6666...
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