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The O-Bow——弦乐用MIDI控制器
O-Bow是一个由传感器和合成软件构成的电子乐器。 使用光学传感器以高分辨率捕捉弓的速度与角度。 各种各样的弓形物品都可以被识别，包括小提琴弓和木棍。
以下是嵌入的网页：http://www.tech.dmu.ac.uk/~dylan/z/dylan/project/obow/index.html
Background:
The O-Bow is an electronic musical instrument consisting a bow sensor and synthesis software. An optical flow sensor is used to measure the bow speed and horizontal angle with high resolution. A variety of bow types can be tracked, including violin bows and wooden sticks.
Development of the O-Bow was prompted by the obvious need for something like a windcontroller but for string instruments. Increasing amounts of orchestral music in tv and film is produced using sophistocated sample based instruments played using keyboards. String sounds are some of the hardest to generate convincingly because of the variety of possible expression. The initial aim for the O-Bow was to find a way to add more expression in this setting. [size=-1]It is also expected to be popular for live performance and in education. Because it is electronic there are no restrictions on what kind of bowed sound might be produced.
It is not intended as a replacement for a real violin!
A real string instrument requires careful control and coordination of bow velocity, down-force, bow position, finger position and vibrato, including time evolution, which can take many years to master. The O-Bow requires only the control of velocity and can be made much more forgiving to play, while retaining considerable expressive potential. Pitch can be controlled using a conventional keyboard or other controllers such as ribbon controllers. Additionally, bow angle is found to be useful for controlling vibrato intensity, freeing the non-bowing hand for key work. Down force sensing may be added in future designs, but is not currently seen as a priority.
From a broad perspective, bowing is a very natural, ancient mode of expression. It deserves to be integrated better into the modern world of electronic sound. This includes the creation of instruments that go beyond direct emulation of bowed instruments.
The method of synthesis adopted here is based around the modification and playback of recorded string samples. In practice this approach works better than expected, partly because the variety of bowing produces a wide variety of gain profiles, and variation in resynthesis, particularly at the critical onset stage. Of course it is difficult to capture every detail of behaviour in this way. Physical models offer the potential for much more realistic and rich behaviour, but they have some disadvantages: It is hard to make a physical model fit well to a given instrument. Even when this is achieved successfully, the result may be as difficult or more difficult to play than the original and require many sensor inputs, particuarly true in the case of the string instruments. So while physical models are expected to play an important role in the future, they are not a focus initially in this project.
New feature summary:
- robust tracking from low to high speeds for variety of surfaces including standard bow hair types.
- bow contact parameter, enables [size=-1]ringing string sound when bow is removed while bowing.
- all communication is using the USB-MIDI protocol providing immediate connection to music software.
- cylindrical casing design for flexible configuration and orientation, for example using standard mic holder.
- contact saddle manufactured from optimized CAD design, for bow engagement and tracking.
- software moved to the Native Instruments Kontakt platform. The script language is strong enough to implement all the O-Bow features. This allows the O-Bow to operate as a virtual instrument in a wide variety of music software.
- manipulations are possible on the control data directly in a sequencer.
- speed to gain warping for a variety of playing feel.
- new violin sample recordings, including ringing. Many thanks to violinist Motje Wolf. The sample sets are incomplete and not fully produced. Complete sample sets will be incorporated later.
第一次发新闻。如有错误请各位老师见谅。
发之前已经搜索过论坛没发现相关的信息所以发了。其实也不新，就是开发进度比较慢呃。
PS:引言修改了好几次还是渣翻译，以前翻译教程的老师们辛苦了。OTZ
[ 本帖最后由 bksky 于 14-3-29 19:39 编辑 ]
以下是嵌入的网页：http://www.tech.dmu.ac.uk/~dylan/z/dylan/project/obow/index.html
Background:
The O-Bow is an electronic musical instrument consisting a bow sensor and synthesis software. An optical flow sensor is used to measure the bow speed and horizontal angle with high resolution. A variety of bow types can be tracked, including violin bows and wooden sticks.
Development of the O-Bow was prompted by the obvious need for something like a windcontroller but for string instruments. Increasing amounts of orchestral music in tv and film is produced using sophistocated sample based instruments played using keyboards. String sounds are some of the hardest to generate convincingly because of the variety of possible expression. The initial aim for the O-Bow was to find a way to add more expression in this setting. [size=-1]It is also expected to be popular for live performance and in education. Because it is electronic there are no restrictions on what kind of bowed sound might be produced.
It is not intended as a replacement for a real violin!
A real string instrument requires careful control and coordination of bow velocity, down-force, bow position, finger position and vibrato, including time evolution, which can take many years to master. The O-Bow requires only the control of velocity and can be made much more forgiving to play, while retaining considerable expressive potential. Pitch can be controlled using a conventional keyboard or other controllers such as ribbon controllers. Additionally, bow angle is found to be useful for controlling vibrato intensity, freeing the non-bowing hand for key work. Down force sensing may be added in future designs, but is not currently seen as a priority.
From a broad perspective, bowing is a very natural, ancient mode of expression. It deserves to be integrated better into the modern world of electronic sound. This includes the creation of instruments that go beyond direct emulation of bowed instruments.
The method of synthesis adopted here is based around the modification and playback of recorded string samples. In practice this approach works better than expected, partly because the variety of bowing produces a wide variety of gain profiles, and variation in resynthesis, particularly at the critical onset stage. Of course it is difficult to capture every detail of behaviour in this way. Physical models offer the potential for much more realistic and rich behaviour, but they have some disadvantages: It is hard to make a physical model fit well to a given instrument. Even when this is achieved successfully, the result may be as difficult or more difficult to play than the original and require many sensor inputs, particuarly true in the case of the string instruments. So while physical models are expected to play an important role in the future, they are not a focus initially in this project.
New feature summary:
- robust tracking from low to high speeds for variety of surfaces including standard bow hair types.
- bow contact parameter, enables [size=-1]ringing string sound when bow is removed while bowing.
- all communication is using the USB-MIDI protocol providing immediate connection to music software.
- cylindrical casing design for flexible configuration and orientation, for example using standard mic holder.
- contact saddle manufactured from optimized CAD design, for bow engagement and tracking.
- software moved to the Native Instruments Kontakt platform. The script language is strong enough to implement all the O-Bow features. This allows the O-Bow to operate as a virtual instrument in a wide variety of music software.
- manipulations are possible on the control data directly in a sequencer.
- speed to gain warping for a variety of playing feel.
- new violin sample recordings, including ringing. Many thanks to violinist Motje Wolf. The sample sets are incomplete and not fully produced. Complete sample sets will be incorporated later.
第一次发新闻。如有错误请各位老师见谅。
发之前已经搜索过论坛没发现相关的信息所以发了。其实也不新，就是开发进度比较慢呃。
PS:引言修改了好几次还是渣翻译，以前翻译教程的老师们辛苦了。OTZ
[ 本帖最后由 bksky 于 14-3-29 19:39 编辑 ]
