Music Report Essay Example | Topics and Well Written Essays - 500 words

Music Report - Essay Example She did a solo piece on her violin which she has been playing for the last three years. Being a student of Dr Rife, and considering that her instructor was present, she had to give a good account of herself. She started out on a pianissimo and the audience held their breath. The performance was quite amazing and by the time she hit the crescendo, the hall was in uproar. She played out the long notes beautifully. However, the student encountered one problem: nervousness. Maybe it was the presence of her instructor, Dr Rife, or the overwhelming audience. The burden of expectation clearly weighed down on her. Nevertheless, she was able to gather courage and improved her performance as the evening wore on. Then came Dr Rife and the Rhythm Kings Band. The band brought together great talents, including Dan Tobias on the trumpet, Pete Reichlin on the trombone, Pat Mercuri on the banjo and guitar and Lenny Pucciatti who was working the drums. Dr Jerry Rife played the clarinet. The various instruments combined powerfully to get the audience on their feet. The accompaniments balanced well with the vocals, especially in the band’s rendition of the spiritual, Down by the Riverside. The performance of the spiritual resonated well with the audience although the band gave it a feeling of jazz. This was something new, listening to hymn played in the jazz style. I loved this version of the hymn as it injected freshness into an otherwise drab song. The performance had its downside nonetheless. There were moments when the percussions were louder than the vocals. Consequently, it was not easy to make out the lyrics of the songs. There were also moments when the crescendos were so high that they were almost deafening. I generally dislike high notes as they interfere with my brain. I also dislike accompaniments that shroud vocals. I prefer music that is cool enough to allow even a conversation to take place. The audience thoroughly enjoyed the performances. They

Underwater Communication Essay Example | Topics and Well Written Essays - 750 words

Underwater Communication - Essay Example Underwater Communication The paper is aimed to present the different methods and forms of underwater communication.To communicate with the surface, the diver uses tools such as MK 12 SSDS, the MK 21 MOD 1, or the MK 20 MOD 0, both voice communications and line-pull signals. The voice communication is the primary means and the line-pull signals are used secondary tools of communication. For diver-to-diver communication, topside intercom, diver-to-diver hand signals, and slate boards are used (Dietrich, 1999, 6-19). The diver intercommunication systems are composed of diver’s earphones, microphone, the communication cable for each diver, the surface control unit, and the tender’s speaker and microphone. These systems allow the communication from the control station to a maximum of three divers. With voice correction circuitry feature, the system is the primary choice for tasks and activities that involve the need to communicate underwater. Another way of communication used by the divers is the li ne-pull signalling which is commonly a distinct pull or a series of sharp pulls on the line from the top to the diver. The said form of communication is based on the needs of the group and the objective of the activity, thus, most signals are established prior to the implementation (Dietrich, 1999, 6-19). Another type of underwater communication is the underwater acoustic communication. The technology works through underwater acoustic channels and is classified on the basis of the methods for compensating effects of multipath and phase variations. The underwater acoustic communication systems are divided into incoherent and coherent detection systems. The example of incoherent systems is the DATS or digital acoustic telemetry. Coherent digital receiver systems make use of specifically localized components to be able to achieve high data rates in the presence of ISI or intersymbol interference which usually affect the quality of communication. This is achieved through the use of special signal processing techniques to compensate other factors such as ISI. There are numerous methods employed and combined for application on goal-specific needs for underwater activities that require the acoustic communication techniques (Klemm, 2004, p.832). The application of underwater acoustic communic ation includes diving, underwater navigation in different types of vehicles and vessels, and even marine animals such as mammals. The underwater communication in mammals is similar to any other technology in underwater communication since there is a sender and a receiver of information. There are two types of underwater communication methods in mammals, one is that of a single sender and multiple receivers who reacts to the message and another is a complex exchange of information among different individuals. Common examples of the animals that utilize the method of underwater acoustic communication are dolphins and certain kinds of seals that use sonar for communication, navigation and hunting food (McGregor, 2005, 390). This method is also used by underwater vessels for navigation and exploration specifically in the deep waters. Sonar is a common means of communication in vessels. In the advent of technology though, other forms communication networks are established and used (Dietr ich, 1999). These forms of communication are included in the next classification. Wireless Underwater Communication Systems Wireless underwater commun