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This thesis explores the sound recording aspects encountered on the creation of an album containing Rock music. It follows each project from the recording of the basic tracks through the final album mixes. Microphone technique, signal processing, studio setup, and instrument selection are also dealt with. This thesis documents two separate recording projects.

Dolby Surround technology offers consumers surround sound in their home via a 4:2:4 encode/decode matrix. Although originally intended for audio accompanying visual media, the system has potential as a music-only playback system. / The purpose of the thesis is to investigate this potential, particularly as it applies to acoustic music recording. Dolby Surround encode and decode technology and its relevance to acoustic music reproduction is reviewed. The classic stereo microphone techniques are discussed with particular attention paid to each one's theoretical ability to "encode" information for the Dolby Surround decoder. Practical limitations and benefits of these well-known methods are considered. / Recently proposed microphone techniques are reviewed in theory and in practice and are found to provide many solutions. Methods for optimizing the decoder technology for music reproduction are suggested. The paper is relevant to any acoustic recording application for a number of surround systems as well as for conventional stereo and mono.

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In the search for improved reproduction of a classical music performance, the technique of time delay compensation is shown to be a useful tool for balance in recording. This paper investigates the importance and validity of small time adjustments in recordings to compensate for variation in distance between spot microphones and a main stereo pair. Conventional recording techniques, psychoacoustic considerations and technological aspects of the use of delays are researched in order to determine their validity in timbral improvement. / Multiple microphone set-ups are used to record both large orchestral works and smaller-scale classical compositions where auxiliary microphones may be needed to ensure an optimum balance in the final mix. Small time delays are derived from calculations involving the distances between microphones, the speed of sound, and humidity and temperature readings from the hall. Proper synchronization of these delays is desirable to preserve phase coherence and combat comb-filter effects. Precise delay units are used to compile musical exerpts for listening tests. / The results reveal any change in sound quality and provide a basis for investigating both the positive and negative effects through objective study of the value of time delay compensation in the live recording reproduction of classical music performances.

The purpose of the study was to determine the effect of videotaping experiences as an instructional aid for participating students in the development of teaching behavior. Criteria for effectiveness were derived from research by Ryans indicating that supportive (Xo), businesslike (Yo), and stimulating (Z0) patterns of action were positive factors, and by Flanders which indicated that indirect teaching behavior was a positive factor.The Cattell Sixteen Personality Factor Questionnaire and the Self-Evaluation of My Teaching Scale (devised by the researcher) were administered at the beginning and end of the six-week period. Mean changes in responses reflecting patterns of indirect teaching, readiness to teach, and Ryans' TCS Patterns Xo, Yo, and Zo were compared.Forty-eight Ball State University students enrolled in Participation classes at the Burris Laboratory School were randomly divided into four groups of twelve each. All of the students received the same or comparable experience in methods of teaching and in the supervision of their classroom participation. Three of the four groups were assigned a series of three microlessons to prepare and teach to a micro class.The Experimental group was given one hour of instruction on Flanders' system of interaction analysis. After each microteaching lesson, instructional feedback was received from a tally of the classroom interaction provided by the researcher and from viewing the videotape replay.A second group was given the same instruction in interaction analysis and feedback from the interaction analysis tally. A third group received no information on interaction analysis and was given feedback from the videotape replay. The fourth group received only the usual experiences of the Participation course with none of the above instructional aids.The resulting data were analyzed using analysis of covariance to adjust post-test mean scores for each group. Analysis of variance was used to compute F-ratios for each variable in the study.No statistically significant differences between the groups were found for any of the variables used. The procedures of videotaping as used and measured in the study did not show a relationship between videotape feedback and increased positive responses on either of the two measurements used.All of the groups showed some gain on items of indirect teaching. This gain may have resulted from the influence of the teachers and supervisors with whom they worked. Although not significant, the direction of the changes suggested that the videotaped groups were slightly more serious and somewhat more inclined to report themselves as ready to teach than the groups not videotaped. Other changes seemed to indicate the possibility that the videotape procedure may have mitigated against the tendency toward increased rigidity typically found in the research of initial teaching experiences. Evaluations at the conclusion of the study showed that student opinions favored the use of the videotape and interaction analysis procedures as feedback.The lack of conclusive results was postulated as being caused by multiple factors. A longer period of time and larger sample population were suggested. The instruments may have been inadequate to measure changes which may have occurred. Individual changes may have been negated in the compilation of mean scores. The individual instructional possibilities of videotaping may not have been completely revealed in this study. Further research of the instructional use of videotape seems to be warranted.

The primary aim of the magnetic recording industry is to increase storage capacities and transfer rates whilst maintaining or reducing costs. In multiple-track tape systems, as recorded track dimensions decrease, higher precision tape transport mechanisms and dedicated coding circuitry are required. This leads to increased manufacturing costs and a loss of flexibility. This thesis reports on the performance of a low precision low-cost multiple-track tape transport system. Software based techniques to study system performance, and to compensate for the mechanical deficiencies of this system were developed using occam and the transputer. The inherent parallelism of the multiple-track format was exploited by integrating a transputer into the recording channel to perform the signal processing tasks. An innovative model of the recording channel, written exclusively in occam, was developed. The effect of parameters, such as data rate, track dimensions and head misregistration on system performance was determined from the detailed error profile produced. This model may be run on a network of transputers, allowing its speed of execution to be scaled to suit the investigation. These features, combined with its modular flexibility makes it a powerful tool that may be applied to other multiple-track systems, such as digital HDTV. A greater understanding of the effects of mechanical deficiencies on the performance of multiple-track systems was gained from this study. This led to the development of a software based compensation scheme to reduce the effects of Lateral Head Displacement and allow low-cost tape transport mechanisms to be used with narrow, closely spaced tracks, facilitating higher packing densities. The experimental and simulated investigation of system performance, the development of the model and compensation scheme using parallel processing techniques has led to the publication of a paper and two further publications are expected.

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No description available.