• The Journal of the Acoustical Society of Korea
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• v.22 no.4E
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• pp.141-149
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• 2003

As music of digital form has been widely used, many people have been interested in the automatic extraction of natural information of music itself, such as key of a music, chord progression, melody progression, tempo, etc. Although some studies have been tried, consistent and reliable results of musical information extraction had not been achieved. In this paper, we propose a method to extract chord and tempo information from general polyphonic music signals. Chord can be expressed by combination of some musical notes and those notes also consist of some frequency components individually. Thus, it is necessary to analyze the frequency components included in musical signal for the extraction of chord information. In this study, we utilize a sinusoidal modeling, which uses sinusoids corresponding to frequencies of musical tones, and show reliable chord extraction results of sinusoidal modeling. We could also find that the tempo of music, which is the one of remarkable feature of music signal, interactively supports the chord extraction idea, if used together. The proposed scheme of musical feature extraction is able to be used in many application fields, such as digital music services using queries of musical features, the operation of music database, and music players mounting chord displaying function, etc.

• Journal of The Korean Society of Integrative Medicine
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• v.6 no.1
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• pp.83-89
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• 2018

Purpose : The purpose of this study was to examine the effects of the trunk stabilization exercise in the musical tempo on lumbar lordosis angle, muscle activity and pain. Methods : For the 30 people with lumbar lordosis angle legion and back pain, a random selection was made with MLSE (15) and LSE (15) to measure VAS, lumbar lordosis angle and Muscle Activity. Result : There were significant decreases in intra group comparisons to lumbar lordosis angle were seen in MLSE and LSE groups, and significant decreases in inter group comparisons in MLSE groups. significant decreases in intra group comparisons to VAS were seen in MLSE and LSE groups, and significant decreases in inter group comparisons in MLSE groups. Significant intra-group comparison of muscle activity, MLSE groups increases were rectus obdominis(right/left) and erector spinae muscle(right/left), LSE groups increases were erector spinae muscle(right/left), and significant increases in inter group comparisons rectus obdominis(right) and erector spinae muscle(left) in MLSE groups Conclusion : Based on the above findings, a program to restore the lumbar lordosis angle, and increase muscle strength should be developed at by applying the combine existing trunk stabilization physical therapy technique and musical tempo.

• The Journal of the Acoustical Society of Korea
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• v.32 no.4
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• pp.346-353
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• 2013

This paper deals with the implementation of a high-quality audio system for karaoke. For improving the key/tempo changes performance, we separated the audio into many musical instrument channels. By separating musical instrument channels, high-quality key/tempo changes can be achieved and we confirmed this using the cross-correlation distribution and the MOS evaluation. The improved audio system was implemented using the TMS320C6747 DSP with fixed/floating-point operations. The implemented audio system can perform the multi-channel WMA decoding, the MP3 encoding/decoding, the wav playing, the EQ, and the key/tempo changes in real time. The WMA channels used for processing the separated instrument channels. The audio system includs the MP3 encoding/decoding function for playing and recording and the wav channel for the effect sound.

• Journal of Families and Better Life
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• v.10 no.2
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• pp.293-312
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• 1992

The purpose of the present study was to investigated the effects of music lesson and musical and rhythmic activities on young Children's musical abilities and musical conservation concepts. Two kinds of tests aiming to measure musical abilities and musical conservation concept were administered to 117 children aged 5- to 7-year-old. The amount of music lesson at home was investigated. and musical and rhythmic activities at two preschools were observed and them evaluated in terms of their quality . The major findings were as follows ; 1)The individual music lessons at home played a significant role in developing young children's musical abilities and musical conservation concepts. 2) Young children's musical abilities and musical conservation concepts were significantly affected by the quality of musical and rhythmic activities. Especially, the quality of musical and rhythmic activities had significant effects on listening, rhythmic activities, and musical creativity among musical abilities. As to musical conservation concepts. only tempo conservation concept was affected by the quality of musical and rhythmic activities. The balanced activities in the five domains of music education were discussed. some suggestions of improving the quality of music education were provided.

• Proceedings of the Korean Information Science Society Conference
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• 2007.10c
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• pp.263-266
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• 2007

We introduce a vision-based hand gesture recognition fer understanding musical time and patterns without extra special devices. We suggest a simple and reliable vision-based hand gesture recognition having two features First, the motion-direction code is proposed, which is a quantized code for motion directions. Second, the conducting feature point (CFP) where the point of sudden motion changes is also proposed. The proposed hand gesture recognition system extracts the human hand region by segmenting the depth information generated by stereo matching of image sequences. And then, it follows the motion of the center of the gravity(COG) of the extracted hand region and generates the gesture features such as CFP and the direction-code finally, we obtain the current timing pattern of beat and tempo of the playing music. The experimental results on the test data set show that the musical time pattern and tempo recognition rate is over 86.42% for the motion histogram matching, and 79.75% fer the CFP tracking only.

• The Journal of the Acoustical Society of Korea
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• v.40 no.3
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• pp.228-233
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• 2021

In this paper, we propose a method to extract and classify features of multi-channel ElectroEncephalo Graphy (EEG) that change according to various musical tempo stimuli. In the proposed method, a 3D convolutional bidirectional gated recurrent neural network extracts spatio-temporal and long time-dependent features from the 3D EEG input representation transformed through the preprocessing. The experimental results show that the proposed tempo stimuli classification method is superior to the existing method and the possibility of constructing a music-based brain-computer interface.

• Journal of Korea Multimedia Society
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• v.17 no.10
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• pp.1239-1252
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• 2014

The OST (Original Sound Track) in the film plays a vital role in increasing consensus and concentration to the storyline. The selected 4 animations are classified into 17 Narrative Processes (NP) by using NP Classification Model [1]. For the NPs each having OSTs, the authors have investigated 6 kinds of objective musical elements of the OST such as sound (speech, music, effect), tonality, tempo, range, intensity, and instrumentation. It is found that there are 33.3% common musical elements among all of them for the NPs with OSTs commonly. Among them, it is also found that there are 71.9% of common properties of the musical element. This research is meaningful by firstly showing that there are common properties of objective musical elements in each NP and the corresponding OST.

• Journal of Music and Human Behavior
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• v.21 no.1
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• pp.29-47
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• 2024

The purpose of this study was to investigate how children with cochlear implants (CI) perceive emotion in music depending on mode and tempo cues, and to compare them to NH children. Participants in this study included 13 CI children who were implanted with either unilateral or bilateral cochlear implants aged between 7 and 13 years, 36 NH children, and 20 NH adults. The musical stimuli used in this study were piano recordings in either major or minor mode, with tempos of 130 bpm and 56 bpm. A comparison of the emotion perception levels of NH children and NH adults before the experiment showed that there was no significant difference between the two groups. Meanwhile, the way they perceive different emotions from each music condition varies, in that CI children perceived all music conditions except as happy, while NH children perceived music in a major key as happy and music in a minor key as sad. It supports that CI children tend to rely primarily on tempo cues to process and identify emotional information from music, which is contrary to NH children. It is important to note that this study enhanced and specified the understanding of how CI children perceive music emotion and use specific musical elements in the process. These findings indicate baseline data on emotion perception in music in CI children.

• The Journal of the Korea Contents Association
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• v.9 no.10
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• pp.1-12
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• 2009

There exist some regular multiple relations in the intervals of notes when they are combined within one measure. This paper presents a method to find the exact measure positions in monophonic song based on those relations. In the proposed method the individual intervals are segmented at first and the rules that state the multiple relations are used to find the measure position. The measures can be applied as the foundational information for extracting beat and tempo of a song which can be used as background knowledge of automatic music transcription system. The proposed method exactly detected the measure positions of 11 songs out of 12 songs except one song which consist of monophonic voice song of the men and women. Also one can extract the information of beat and tempo of a song using the information about extracted measure positions with music theory.

• The Journal of the Korea Contents Association
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• v.9 no.3
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• pp.152-163
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• 2009

This essay researches which affective responses can be made from musical elements of Korean traditional music through adjective description about mood responses. It results that traditional mode which are classified into Pyoungjo and Gyemounjo hardly have any the affective responses, while major and minor mode, tempo, tone color, vertical and horizontal texture have some effects on particular affects. Meanwhile, newly composed Korean traditional music have more effects for as inducing affective responses rather than works as old Korean traditional music. As well as Western music, Korean traditional music induces different affective responses to each musical element. As such, this aspects can be adopted to different realms like background music, commercial music, music therapy and so on.