روش جدیدی در بستهبندی نمونههای صوتی جهت مقابله با مشکل گمشدن بستهها
محورهای موضوعی : مهندسی برق و کامپیوتر
1 - دانشگاه صنعتی خواجه نصيرالدين طوسی
کلید واژه: انتقال صدا روی اینترنتبازسازی بستههای گمشدهشبکه فعال,
چکیده مقاله :
این مقاله به معرفی روشی برای بستهبندی صدا جهت انتقال روی شبکه اینترنت میپردازد. هدف از این روش آن است که تا حد ممکن از کاهش کیفیت صدا بهدلیل گمشدن بستههای صوتی در شبکه جلوگیری شود. این روش اجازه بازسازی بستههای گمشده را در حین عبور از شبکه در گرههای فعال شبکه میدهد، لذا کیفیت صدای دریافتی در گیرنده بالاتر از روشهای عادی انتقال صدا روی اینترنت خواهد بود. کارآیی این روش بهوسیله شبیهسازی یک شبکه انتقال داده کاملاً غیر امن بههمراه یک گره فعال بررسی شده و نشان داده شده که کیفیت صدای دریافتی حتی با 50% بستههای گمشده نیز بسیار بهتر از روشهای دیگر انتقال صدا میباشد.
This article introduces a new voice packing scheme to transfer voice samples over the Internet. This method aims to reduce the voice quality degradation caused by lost packets as far as possible. Regenerating lost voice packets in active nodes in the network, introduces more received voice quality at the receiver side compared with the other methods. This scheme is simulated using an unreliable network with an active node, and it shows more voice quality than the other schemes even if the network loses 50 percent of packets.
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