The audio signal is necessary, particularly in the heart, the diagnosis, especially diseases of the heart, which indicate abnormalities of the heart, so this article provides procedures that can help me Al KOR thuen enhancements to locate S2 S1 audio and audio by using the short time period foo, ria. (Short-Time Fourier Transform) analysis of signal in the frequency range 1-100, 101-200 and 201 – 300 Hz to S1 and S2 sound, locate the sound to which the results showed Al-I can enhance thuen specifies S1 and S2 sounds to locate sound, where frequency range from 1 – 100 Hz, sensitivity (SE) to identify the sound of S1 to 96.7% and S2 ± 4.83 ± 4.75% sounds up to 95.0 and calculation precision value (PR) up to 98.2% ± 4.91 to identify the sound of S1 and 95.3% ± 4.76 to identify sound S2, respectively.
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