fixed generate_trapezoid
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fa14d13430
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@ -37,19 +37,22 @@ function x = generate_trapezoid(amplitude, frequency, phase, fs, duration, duty)
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st = mod(frequency * t - phase, 1);
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st = mod(frequency * t - phase, 1);
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slope = (amplitude/2) / (duty/8);
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slope = (amplitude/2) / (duty/8);
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if(st < duty)
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if(st < duty)
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if(st < duty/8 || st > 7*duty/8)
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if(st <= duty/8)
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x(i) = slope * st;
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x(i) = slope * st;
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else
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else
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if(st < 5*duty/8)
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if(st <= 5*duty/8)
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x(i) = amplitude/2 - slope * (st-(3*duty/8));
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x(i) = amplitude/2 - slope * (st-(3*duty/8));
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end
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end
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if(st < 3*duty/8)
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if(st <= 3*duty/8)
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x(i) = amplitude/2;
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x(i) = amplitude/2;
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end
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end
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if(st > 5*duty/8)
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if(st >= 5*duty/8)
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x(i) = -amplitude/2;
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x(i) = -amplitude/2;
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end
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end
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end
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end
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if(st >= 7* duty/8)
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x(i) = -amplitude/2 + slope*(st-(7*duty/8));
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end
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end
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end
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end
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end
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end
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end
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