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2 result(s) for "تصنيفات الصوت"
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Audio Classification Based on Content Features
Audio classification is the process to classify different audio types according to contents. It is implemented in a large variety of real world problems, all classification applications allowed the target subjects to be viewed as a specific type of audio and hence, there is a variety in the audio types and every type has to be treatedcarefully according to its significant properties. Feature extraction is an important process for audio classification. This workintroduces several sets of features according to the type, two types of audio (datasets) were studied. Two different features sets are proposed: (i) firstorder gradient feature vector, and (ii) Local roughness feature vector, the experimentsshowed that the results are competitive to those gotten from other popular methods inthis field, such as Zero Crossing Rate (ZCR), Amplitude Descriptor (AD), Short Time Energy (STE), and Volume (Vo). The test results indicated, that the attained averageaccuracy of classification is improved up to 94.9232% for training set and 95.8666% for testing set. The classification performance of these two extracted featuresets is studied individually, and then they used together as one feature set. Theiroverall performance is investigated, the test results showed that the proposed methods give high classification rates for the audio.
الأرشفة في مكتبة إذاعة جدة
تناولت الدراسة موضوع الأرشفة الإذاعية في المملكة العربية السعودية واتخذت مكتبة إذاعة جدة كدراسة حالة في هذا الجانب، وهدفت إلي التعرف على المكتبة ومقوماتها والعاملين بها، ومحتوياتها وطرق تنظيمها ومدى استخدام التقنية في أرشفة مقتنياتها، وايجابيات وسلبيات نظام أرشفة المواد الإذاعية المستخدم، والوصول لمجموعة من النتائج والمقترحات التي تساهم في تطوير وتحسن واقع الأرشفة الإذاعية في المكتبة ولأجل ذلك استخدم منهج دراسة الحالة وتم زيارة مقر المكتبة وإجراء المقابلات المقننة مع مدير المكتبة والعاملين، واعتماد الملاحظة المباشرة عبر استمارة الملاحظة في متابعة أعمال المكتبة وتنظيم محتوياتها. وتوصلت الدراسة إلي عدة نتائج من أهمها عدم اشتراك العاملين بالمكتبة بالدورات التدريبية المتعلقة بالعمل الأرشيفي الإذاعي.