This thesis focuses on the analysis and modeling of scratching, in other words, the DJ (disk jockey) practice of using the turntable as a musical instrument. There has been experimental use of turntables as musical instruments since their invention, but the use is now mainly ascribed to the musical genre hip-hop and the playing style known as scratching. Scratching has developed to become a ski...

Abstract Flexural elastic waves and sound in solids are of great interest wide-ranging contexts such as ultrasound plates, geophysics, ocean engineering, aerospace automotive structures, musical acoustics. Despite bending being the most important for surface their propagation presence inevitable non-uniformity is poorly understood. Here we show branching focusing behaviour highly dispersive fle...

Amplitude beating between closely spaced frequency components is a well-known effect in musical acoustics, psychoacoustics, and other fields [1-3]. Depending on the musical context and the personal preference of the listener, the presence of amplitude beating can either be an undesirable artifact of the limited frequency resolution of the human hearing apparatus, or a pleasant quality that adds...

Signal processing techniques allow us not only to compensate for the acoustics of a listening environment, but also to add special musical effects such as delay, echo, and reverb, if desired. The most common example is the audio equalizer that allows us to enhance the bass or treble content of an audio signal. What a listener hears in a room depends not only on the acoustics characteristics of ...

The study of waves can be traced back to antiquity where philosophers, such as Pythagoras (c.560-480 BC), studied the relation of pitch and length of string in musical instruments. However, it was not until the work of Giovani Benedetti (1530-90), Isaac Beeckman (1588-1637) and Galileo (1564-1642) that the relationship between pitch and frequency was discovered. This started the science of acou...

Multitrack recordings of a mixed adult choir with 23 singers were collected in order to investigate the influence of varied room acoustical conditions on a choir’s performance with regard to intonation, loudness, tempo, and timing precision. Headset microphones were used to record each chorister separately while the collected sound of all singers was presented via headphones exerting acoustic s...

In site-specific installation or situated media, a significant part of the "I" in NIME is the environment, the site and the implicit features of site such as humans, weather, materials, natural acoustics, etc. These could be viewed as design constraints, or features, even agency determining the outcome of responsive sound installation works. This paper discusses the notion of interface in publi...

This paper describes research aimed at building ‘‘active music listening interfaces’’ to demonstrate the importance of music understanding technologies, including sound source separation and F0 estimation, and the benefit they offer to end users. Active music listening is a way of listening to music through active interactions. Given polyphonic sound mixtures taken from available music recordin...

t-shape profile barriers are one of the most successful barriers among many different profiles. it has been shown that using welled diffusers on the top of t-shaped barriers makes a reactive barrier that shows better performance than that of any other used profile barriers compared with their equivalent absorbent barrier. the contribution of the top surface of reactive t-profile barriers to the...

A powerful pitch estimation algorithm called SWIPE has been developed for processing speech and music. SWIPE is shown to outperform existing algorithms on several publicly available speech and musical instrument databases, and a disordered speech database, reducing the gross error rate by 40%, relative to the best competing algorithm. In short, SWIPE estimates the pitch as the fundamental frequ...