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20 lines
633 B
JavaScript
20 lines
633 B
JavaScript
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//data:charset=utf-8,
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var audioCtx = new window.AudioContext;
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function beep(duration, frequency, volume, type, callback) {
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var oscillator = audioCtx.createOscillator();
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var gainNode = audioCtx.createGain();
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oscillator.connect(gainNode);
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gainNode.connect(audioCtx.destination);
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if (volume){gainNode.gain.value = volume;}
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if (frequency){oscillator.frequency.value = frequency;}
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if (type){oscillator.type = type;}
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if (callback){oscillator.onended = callback;}
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oscillator.start(audioCtx.currentTime);
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oscillator.stop(audioCtx.currentTime + ((duration || 500) / 1000));
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};
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beep();
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self.close();
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