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بهبود کیفیت گفتار مبتنی بر بهینهسازی ازدحام ذرات با استفاده از ویژگی های ماسک گذاری سیستم شنوائی انسان | ||
مجله مهندسی برق دانشگاه تبریز | ||
مقاله 25، دوره 46، شماره 3 - شماره پیاپی 77، آذر 1395، صفحه 287-297 اصل مقاله (3.33 M) | ||
نویسندگان | ||
مسعود گراوانچی زاده* ؛ ساناز قائمی سردرودی | ||
دانشگاه تبریز | ||
چکیده | ||
چکیده: در این مقاله، روشهای دوکاناله جدید زیرفضایی سیگنال با استفاده از تکنیکهای حذف نویز ادراکی برای بهبود کیفیت سیگنال گفتار پیشنهاد شدهاند. روشهای پیشنهادی از مشخصات ماسکگذاری سیستم شنوایی انسان برای کاهش نویز باقیمانده قابلشنیدن بهره میگیرند. روش تجزیه به مقادیر منفرد کسری ادراکی، تکنیک بهینهسازی ذرات را برای تخمین نویز جمعی استفاده میکند. نتایج شبیهسازی دقیقی که توسط دو معیار مختلفsubjectiveوobjectiveارزیابی شده است، نشاندهنده کیفیت بهتر سیگنال پردازششده توسط روشهای پیشنهادی نسبت به الگوریتمهای قبلی با هر دو نوع نویز ایستا و غیرایستا و بهخصوص نویز غیرسفید است. | ||
کلیدواژهها | ||
واژه های کلیدی: آستانههای ماسک گذاری شنوایی؛ تخمینگر حداقل مربعات؛ تخمینگر حداقل واریانس؛ بهینه سازی ازدحام ذرات؛ تجزیه به مقادیر منفرد کسری؛ بهبود کیفیت گفتار | ||
مراجع | ||
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