Speech enhancement method applied to ultra-short wave radio station
An ultra-short wave radio station and voice enhancement technology, which is applied in the field of communication, can solve the problems of not being able to effectively improve the signal-to-noise ratio, and achieve the effect of a priori accurate signal-to-noise ratio and improved voice signal-to-noise ratio
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[0042] The invention provides a voice enhancement method applied to ultrashort wave radio stations, such as figure 2 As shown, the specific operation method is as follows:
[0043] Setp.1, start receiving signals.
[0044] Setp.2, Carrier Indication Judgment:
[0045]In the voice enhancement of the ultrashort wave radio station, according to the structural characteristics of the ultrashort wave radio station, a carrier lock indicator is added to the voice enhancement to judge whether there is a signal. Noise sampling starts when the carrier indicator is turned on. By default, after the carrier indicator is turned on, the few frames before the voice starts are noise frames. Because in the communication process, there is a process from pressing the sending and receiving control switch to starting to speak, and according to the short-term stability requirements of the voice signal, each frame signal is about 10 to 30 milliseconds, and there are two frames between frames. Ther...
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