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Music often evokes a regular beat and a pleasurable sensation of wanting to move to that beat called groove. Recent studies show that a rhythmic pattern’s ability to evoke groove increases at moderate levels of syncopation, essentially, when some notes occur earlier than expected. We present two studies that investigate that effect of syncopation in more realistic polyphonic music examples. First, listeners rated their urge to move to music excerpts transcribed from funk and rock songs, and to algorithmically transformed versions of these excerpts: 1) with the original syncopation removed, and 2) with various levels of pseudorandom syncopation introduced. While the original excerpts were rated higher than the de-syncopated, the algorithmic syncopation was not as successful in evoking groove. Consequently, a moderate level of syncopation increases groove, but only for certain syncopation patterns. The second study provides detailed comparisons of the original and transformed rhythmic structures that revealed key differences between them in: 1) the distribution of syncopation across instruments and metrical positions, 2) the counter-meter figures formed by the syncopating notes, and 3) the number of pickup notes. On this basis, we form four concrete hypotheses about the function of syncopation in groove, to be tested in future experiments.

One of the most immediate and overt ways in which people respond to music is by moving their bodies to the beat. However, the extent to which the rhythmic complexity of groove—specifically its syncopation—contributes to how people spontaneously move to music is largely unexplored. Here, we measured free movements in hand and torso while participants listened to drum-breaks with various degrees of syncopation. We found that drum-breaks with medium degrees of syncopation were associated with the same amount of acceleration and synchronisation as low degrees of syncopation. Participants who enjoyed dancing made more complex movements than those who did not enjoy dancing. While for all participants hand movements accelerated more and were more complex, torso movements were more synchronised to the beat. Overall, movements were mostly synchronised to the main beat and half-beat level, depending on the body-part. We demonstrate that while people do not move or synchronise much to rhythms with high syncopation when dancing spontaneously to music, the relationship between rhythmic complexity and synchronisation is less linear than in simple finger-tapping studies.

The Pleasurable desire to Move to A beat is known as groove and is partly explained by rhythmic syncopation. While many contemporary groovedirected genres originated in the African diaspora, groove music psychology has almost exclusively studied European or North American listeners. While crosscultural approaches can help us understand how different populations respond to music, comparing African and Western musical behaviors has historically tended to rely on stereotypes. Here we report on two studies in which sensorimotor and groove responses to syncopation were measured in university students and staff from Cape Coast, Ghana and Williamstown, MA, United States. In our experimental designs and interpretations, we show sensitivity towards the ethical implications of doing cross-cultural research in an African context. The Ghanaian group showed greater synchronization precision than Americans during monophonic syncopated patterns, but this was not reflected in synchronization accuracy. There was no significant group difference in the pleasurable desire to move. Our results have implications for how we understand the relationship between exposure and synchronization, and how we define syncopation in cultural and musical contexts. We hope our critical approach to cross-cultural comparison contributes to developing music psychology into a more inclusive and culturally grounded field.

Integrating Methods From Experimental social psychology and music perception, we tested the hypothesis that when listeners personally like a musician, they will be more inclined to experience his or her music as both provoking movement and as subjectively pleasurable, the two core features of perceived groove. In Experiment 1, participants were exposed to a set of moderately-syncopated, high-groove drum-breaks which they were led to believe were either produced by a relatively likable or unlikable musician. In line with predictions, participants led to find the musician more versus less likable rated the same drum-breaks as more evocative of both the urge to move and of feelings of pleasure. When participants in a follow-up study (Experiment 2) were administered the exact same manipulation of likability, but exposed to highlysyncopated, low-groove drum-breaks, these effects were eradicated, suggesting that the results of Experiment 1 were not merely due to demand characteristics or response biases. Together, these findings support the notion that listeners are more responsive to “participating in the music” when they are relatively motivated to affiliate with the musician(s). Methodological limitations and directions for future research on the social psychological underpinnings of groove are discussed.

Recent studies suggest that rhythmic syncopation is a relevant predictor for groove. In order to validate these claims, a reliable measure of rhythmic syncopation is required. This article investigates whether a particular notation-based model for estimating syncopation in Western popular music drum patterns adequately predicts perceived syncopation. A listening experiment was carried out with 25 professional musicians. Six popular music drum patterns were presented to the participants in all 15 pairwise combinations, and the participants chose the pattern from each pair that was more syncopated (win), compared to the other pattern (lose). Perceived syncopation was defined as the proportion of wins for each stimulus. The experiment showed that the model works well in general, but that it overemphasises the weight of syncopes on weak metric positions. This exaggerates the syncopation value of one particular drum pattern and generally leads to inflated syncopation values in the upper syncopation range. In consequence, the fit between the model and perceived syncopation was poor, even when flexible logarithmic functions ( χ 4 2 = 26.980 , p < .001) or exponential approach functions ( χ 4 2 = 28.344 , p < .001) were used to link the model predictions to perceived syncopation. The model was revised and a numeric optimisation process was carried out to improve its fit. The revised model produces syncopation estimates that have a linear relationship with the perceived syncopation measures and a good fit with the data ( χ 3 2 = 2.537 , p = .469). However, this revised model is based on only six drum patterns that cover a very limited range of rhythmic phenomena. In order to create a general model of syncopation in popular music drum patterns, further modelling work is necessary that involves a larger number and a wider variety of patterns.

Previous work on sensorimotor synchronization has investigated the dynamics of finger tapping and how individual movement trajectories contribute to timing accuracy via asymmetry in movement velocities. The present study investigated sensorimotor synchronization (in-phase) and syncopation (anti-phase) to both an auditory metronome and a visual flashing light at multiple frequencies to understand how individual movement phases contribute to the variability of timekeeping and error correction in different sensory modalities and with different task constraints. Results demonstrate that the proportional time spent in both the upward phase of movement and the holding phase of movement (time spent on the surface of the table) remain relatively invariant across both stimulus modalities and across tapping styles (syncopation and synchronization), but changes with interval duration, increasing as interval duration increases. The time spent in the downward phase of movement did significantly differ across stimulus modality and tapping style, increasing during both visuomotor timing and syncopation, accompanied by a significant decrease in flexion velocity during syncopation. Extension velocity and flexion time were found to be the main contributors to differences between visual and auditory timing, while flexion velocity and flexion time were found to be the main contributors to differences between synchronization and syncopation. No correlations were found between asynchrony and the upward, downward, or holding phases of movement, suggesting the existence of multiple error correction strategies.

This study investigated cognitive and emotional effects of syncopation, a feature of musical rhythm that produces expectancy violations in the listener by emphasising weak temporal locations and de-emphasising strong locations in metric structure. Stimuli consisting of pairs of unsyncopated and syncopated musical phrases were rated by 35 musicians for perceived complexity, enjoyment, happiness, arousal, and tension. Overall, syncopated patterns were more enjoyed, and rated as happier, than unsyncopated patterns, while differences in perceived tension were unreliable. Complexity and arousal ratings were asymmetric by serial order, increasing when patterns moved from unsyncopated to syncopated, but not significantly changing when order was reversed. These results suggest that syncopation influences emotional valence (positively), and that while syncopated rhythms are objectively more complex than unsyncopated rhythms, this difference is more salient when complexity increases than when it decreases. It is proposed that composers and improvisers may exploit this asymmetry in perceived complexity by favoring formal structures that progress from rhythmically simple to complex, as can be observed in the initial sections of musical forms such as theme and variations.

The fictional Dr. Strabismus sets out to write a new comprehensive theory of music. But music's tendency to deconstruct itself combined with the complexities of postmodernism doom him to failure. This is the parable that frames The Sense of Music, a novel treatment of music theory that reinterprets the modern history of Western music in the terms of semiotics. Based on the assumption that music cannot be described without reference to its meaning, Raymond Monelle proposes that works of the Western classical tradition be analyzed in terms of temporality, subjectivity, and topic theory. Critical of the abstract analysis of musical scores, Monelle argues that the score does not reveal music's sense. That sense--what a piece of music says and signifies--can be understood only with reference to history, culture, and the other arts. Thus, music is meaningful in that it signifies cultural temporalities and themes, from the traditional manly heroism of the hunt to military power to postmodern \"polyvocality.\" This theoretical innovation allows Monelle to describe how the Classical style of the eighteenth century--which he reads as a balance of lyric and progressive time--gave way to the Romantic need for emotional realism. He argues that irony and ambiguity subsequently eroded the domination of personal emotion in Western music as well as literature, killing the composer's subjectivity with that of the author. This leaves Dr. Strabismus suffering from the postmodern condition, and Raymond Monelle with an exciting, controversial new approach to understanding music and its history.

Salsa20 算法是 eSTREAM 计划胜选算法之一, 其安全性分析长期受到广泛关注, 但目前仍未有 8 轮以上的有效攻击. 2023 年美密会上, Wang 等人提出的切分 (syncopation) 技术改进了基于概率中立比特的差分分析框架, 并成功应用于 Salsa20 的变体 ChaCha 算法, 从而提升了其分析结果. 本文深入研究了切分技术的限制条件, 在此基础上提出了后向重要条件的概念, 并给出了搜索有效后向重要条件的算法. 作为应用, 本文进一步评估了 Salsa20 算法的安全性, 不仅改进了此前 8 轮最优攻击的复杂度, 还首次给出了超过 8 轮的分析结果, 其时间和数据复杂度分别为 2237.61 和 2124.55.

In the article \"Emotion Painting: Lyric, affect, and musical relationships in a large lead-sheet corpus\", Sun and Cuthbert (2017) explored the correlations between affect-carrying lyrics and musical features such as beat strength, pitch height, consonance, and mode. Several musical features did indeed turn out to be highly correlated with the affect of the lyrics. However, correlations between other features, particularly mode-related musical features and lyric affect, were either insignificant or even contradicted previous research. In the current commentary, it is argued that the difference between the musical features that show significant correlations and those that do not is that the former have a local musical effect whereas the latter tend to affect the mood of a whole phrase or piece, and that the way Sun and Cuthbert estimate lyric affect for sentences or song may not be appropriate. Furthermore, a few remarks are made about the way Sun and Cuthbert treat multi-syllable words and about some basic assumptions concerning the relation between music and lyrics in a song. Nevertheless, the authors are praised for their innovative and interesting work, while several alternative and additional analyses (for example with scale-degree qualia and syncopations) are proposed.