MIDI文件主旋律音轨的抽取

在数字音乐的研究应用中,大多数高层语义的音乐特征研究都以MIDI音乐文件库作为素材,其中主旋律音轨作为最重要的音乐信息,而从MIDI文件中获取主旋律信息具有很大的难度和误差.提出一种应用随机森林的方法自动抽取MIDI文件中主旋律所在的音轨.首先根据信息熵理论定义了音轨特征的熵值,并通过实验判断该特征的熵值对区分MIDI主旋律音轨与伴奏音轨是有效的.然后由MIDI文件的音轨信息熵和一些其他重要特征组成特征向量,构建随机森林分类器抽取MIDI文件主旋律所在的音轨.由实验可知,该模型有较高的准确率,对提取MIDI文件主旋律音轨有效.     

浅谈MIDI音乐的基本应用

MIDI技术的诞生,是音乐与现代技术结合的产物。MIDI音乐,在现代音乐创作中发挥了重要作用。在当今的音乐中有很大比例是MIDA音乐的产物,那么我们如何应用MIDI音乐呢。本文对MIDI音乐如何使用进行了简要介绍,以供参考。     

我们的队伍向

《MIDI 军团军歌》MIDI!MIDI『MIDI!我们的队伍向MIDI,脚踏着音乐的大地,背负着 MIDI的希望,我们是一支不可多得的力量。我们是软件的朋友,我们有硬件的武装,从不放弃,绝不认输,英勇战斗,直到把 MIDI 盲消灭干净,MIDI音乐旗帜高高飘扬。听!五十七号音色响,听!高频采样多嘹亮!同志们整齐步伐奔向 MIDI 的战场,同志们整齐步伐奔赴音乐的边疆,MIDI!MIDI!我们的队伍向 MIDI,向着最新的技术,向着世界的方向!     

ILOVE MIDI音乐作品大赛

“I LOVE MIDI“音乐作品大赛是由《MIDI 音乐制作》杂志联动广大 MIDI 音乐爱好者所举办的极具魅力的赛事。旨在推出优秀的 MIDI 音乐作者、作品、使更多 MIDI 音乐爱好者的才华得以充分展示于世。此次大赛,作品征集范围广泛,赛事周期稳定而长,必将有更多优秀作品出现。参赛选手不仅有机会获得大奖,倘若你是优秀久才还将在我们的帮助下进入专业音乐领域,实现你心中的梦想。     

MIDI电声实验室的设计与实现

MIDI电声实验室是高校电声教学和音乐教学的重要组成部分.建设MIDI电声实验室,主要是将传统音乐与电子音频制作在计算机软件控制下结合到一起,以实现音频处理、音乐欣赏和电脑音乐制作等多项功能.结合教学实际需要,从MIDI电声实验室基础设备和应用部分(主要包括计算机、键盘、电子合成器、话筒和音箱等设备)两方面论述了具体的设计要求。     

一种DFM多通道MIDI乐音合成器芯片的设计

为了简化MIDI乐音产生过程,详细阐述了一种基于DFM的多通道MIDI乐音合成器芯片的整体架构及其关键技术.该乐音合成器芯片内置一个乐音存储器和一个寄存器,具有两种乐音产生模式:9种旋律音或者6种旋律音和5种节奏音,且两种模式下均可同时输出不同的乐音.利用Cadence平台对各个子模块及整体电路进行仿真,结果表明各项指标均达到设计要求.     

信息化时代MIDI和多媒体技术在高校音乐教学中的应用

随着社会进入信息时代,MIDI技术的诞生,为现代音乐技术的发展创造了条件。从MIDI、多媒体电脑音乐到网络化教学,都已在音乐教育观念和教学手段的改革中发挥了重要作用。在高等院校的音乐教学中,配置和应用多媒体音乐教学系统,是实现教学手段现代化发展的最佳解决方案之一。本文结合教学实践,针对计算机MIDI和多媒体系统在高校音乐教学中实际应用的若干问题,谈一谈自己的体会与经验。     

正态分布下基于隐Markov模型的多声道MIDI音乐检索

音乐查询是信息检索领域的一个研究热点.分析了现有方法应用范围局限性和低效率的原因,讨论了用户哼唱和多声道MIDI特征序列的表达方法,提出新的基于内容的多声道MI-DI检索模型HMRM(Homophonic MIDI Retrieval Model).新模型将多声道音乐表达成一个隐Markov模型,计算哼唱对象与库中对象的相似度并排序返回查询结果.实验表明,对于不同哼唱水平的用户,HMRM的识别率平均能达到73.3%,具有较高的查准率.     

浅论普通高校音乐的数字化教学

随着时代的发展,高校音乐教育面临着时代给予的巨大机遇和挑战,传统的音乐欣赏模式已不能满足学生的视听要求,普通高校的音乐教学应该进入以计算机、MIDI设备为中心的多媒体音乐教室,要充分发挥计算机、网络、MIDI的技术优势,合理利用Inter上现有的音乐教育资源,丰富课堂内容,开展音乐教育.而实现普通高校音乐教学数字化革命的首要任务是教师教学理念和教学模式的更新.本文就未来音乐教育发展趋势作了前瞻性的展望和预测,浅论了普通高校音乐的数字化教学的阻力和对策.     

数字乐谱中嵌入MIDI信息的盲水印算法

提出一种基于光学乐谱识别(Optical Music Recognition,OMR)技术的适合于二值乐谱图像中嵌入其相应MIDI(Musical Instrument Digital Interface)信息的盲水印算法,可实现数字乐谱信息和MIDI信息的重建.实验结果表明,此算法不会对乐谱识别产生任何影响,且有利于数字音乐乐谱和数字音序的完整性审计和同步传播.     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

Characterization of Ordovician carbonate reservoirs, southeastern Saskatchewan, Canada

The discovery of the prolific Ordovician Red River reservoirs in 1995 in southeastern Saskatchewan was the catalyst for extensive exploration activity which resulted in the discovery of more than 15 new Red River pools. The best yields of Red River production to date have been from dolomite reservoirs. Understanding the processes of dolomitization is, therefore, crucial for the prediction of the connectivity, spatial distribution and heterogeneity of dolomite reservoirs.The Red River reservoirs in the Midale area consist of 3～4 thin dolomitized zones, with a total thickness of about 20 m, which occur at the top of the Yeoman Formation. Two types of replacement dolomite were recognized in the Red River reservoir: dolomitized burrow infills and dolomitized host matrix. The spatial distribution of dolomite suggests that burrowing organisms played an important role in facilitating the fluid flow in the backfilled sediments. This resulted in penecontemporaneous dolomitization of burrow infills by normal seawater. The dolomite in the host matrix is interpreted as having occurred at shallow burial by evaporitic seawater during precipitation of Lake Almar anhydrite that immediately overlies the Yeoman Formation. However, the low δ18O values of dolomited burrow infills (-5.9‰～ -7.8‰, PDB) and matrix dolomites (-6.6‰～ -8.1‰, avg. -7.4‰ PDB) compared to the estimated values for the late Ordovician marine dolomite could be attributed to modification and alteration of dolomite at higher temperatures during deeper burial, which could also be responsible for its 87Sr/86Sr ratios (0.7084～0.7088) that are higher than suggested for the late Ordovician seawaters (0.7078～0.7080). The trace amounts of saddle dolomite cement in the Red River carbonates are probably related to "cannibalization" of earlier replacement dolomite during the chemical compaction.     

Design and analysis of generic LBS application developing platform

Location based services is promising due to its novel working style and contents.A software platform is proposed to provide application programs of typical location based services and support new applications developing efficiently. The analysis shows that this scheme is easy implemented, low cost and adapt to all kinds of mobile nework system.     

橡胶颗粒沥青混合料低温抗裂性试验研究

以AC-13级配为基础,将橡胶颗粒代替部分集料掺入混合料中,以低温弯曲试验为评价方法对不同橡胶颗粒掺量下沥青混合料的低温抗裂性进行研究,并引入应变能密度值对混合料的低温抗裂性进行综合评价.试验结果表明:橡胶颗粒沥青混合料试件的破坏微应变均超过2 300,满足冬寒区的技术指标;无论是否掺加橡胶颗粒,随着温度的下降,沥青混合料破坏时的最大弯拉强度增大,弯拉应变降低,劲度模量增大;弯曲应变能密度在胶粒掺量为1%左右时具有较大的弯曲应变能密度值,此时橡胶颗粒沥青混合料具有较好的低温抗裂性.     

低渗透非均质砂岩油藏启动压力梯度研究

理论推导与室内实验相结合,建立了低渗透非均质砂岩油藏启动压力梯度确定方法。首先借助油藏流场与电场相似的原理,推导了非均质砂岩油藏启动压力梯度计算公式。其次基于稳定流实验方法,建立了非均质砂岩油藏启动压力梯度测试方法。结果表明:低渗透非均质砂岩油藏的启动压力梯度确定遵循两个等效原则。平面非均质油藏的启动压力梯度等于各级渗透率段的启动压力梯度关于长度的加权平均;纵向非均质油藏的启动压力梯度等于各渗透率层的启动压力梯度关于渗透率与渗流面积乘积的加权平均。研究成果可用于有效指导低渗透非均质砂岩油藏的合理井距确定,促进该类油藏的高效开发。     

Quantitative trait loci （QTLs） for quality traits related to protein and starch in wheat

Quality traits in wheat （Triticum aestirum L.） were studied by quantitative trait locus （QTL） analysis in a recombinant inbred line （RIL） population, a set of 131 lines derived from Chuan 35050 × Shannong 483 cross （ChSh）. Grains from RILs were assayed for 21 quality traits related to protein and starch. A total of 35 putative QTLs for 19 traits with a single QTL explaining 7.99-40.52% of phenotypic variations were detected on 10 chromosomes, 1D, 2A, 2D, 3B, 3D, 5A, 6A, 6B, 6D, and 7B. The additive effects of 30 QTLs were positive, contributed by Chuan 35050, the remaining 5 QTLs were negative with the additive effect contributed by Shannong 483. For protein traits, 15 QTLs were obtained and most of them were located on chromosomes 1 D, 3B and 6D, while 20 QTLs for starch traits were detected and most of them were located on chromosomes 3D, 6B and 7B. Only 7 QTLs for protein and starch traits were co-located in three regions on chromosomes 1D, 2A and 2D. These protein and starch trait QTLs showed a distinct distribution pattern in certain regions and chromosomes. Twenty-two QTLs were clustered in 6 regions of 5 chromosomes. Two QTL clusters for protein traits were located on chromosomes 1D and 3B, respectively, three clusters for starch traits on chromosomes 3D, 6B and 7B, and one cluster including protein and starch traits on chromosome 1D.     

On Tragic Consciousness In The Works By Ernest Hemingway

As an American modern novelist who were famous in the literary world, Hemingway was not a person who always followed the trend but a sharp observer. At the same time, he was a tragedy maestro, he paid great attention on existence, fate and end-result. The dramatis personae's tragedy of his works was an extreme limit by all means tragedy on the meaning of fearless challenge that failed. The beauty of tragedy was not produced on the destruction of life, but now this kind of value was in the impact activity. They performed for the reader about the tragedy on challenging for the limit and the death.