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Using a novel measure incorporating stylistic and acoustic data on recorded music from 1967 to 2017, we search for trends in the evolution of musical diversity in 125,340 albums. We find that temporal patterns of diversity differ for stylistic and acoustic data. We also find that the patterns differ dramatically by genre. Some genres, such as blues, jazz, and pop-rock, decrease in diversity over time; most other genres increase in diversity. The causes of these different trends present a puzzle for future research. We also find different patterns for recordings that made the Billboard 200 charts compared to all recordings, suggesting an association between selection processes driven by consumer popularity and diversity. Moreover, associations of diversity and industry structure found in prior research do not hold when we analyze data beyond the smaller sample of the more popular recordings found in Billboard. These findings have implications for many prior studies based exclusively on best-selling recordings

This chapter focuses on whether perceived emotional intensity and help need is possible to discriminate in expressions of fear and neutrality in brief authentic emergency calls. Extraction of acoustic parameters of fear and neutrality was done prior to letting participants listen to a low-pass-filtered stimuli set. Participants discriminated fear and neutrality in both the intensity and help need condition. In turn, judged intensity and judged help need correlated strongly, with partial correlations indicating that participants use acoustically measured intensity (mean dB) as information to infer the intensity/help need relationship. We also discuss the implications of emotional expression in the call centre domain.

This chapter explores the role of messages in knowledge networks. Messages are characterized in terms of the type of knowledge they represent and their attributes. Messages represent knowledge transactions in a network. The authors describe the type of message in terms of the knowledge capital it contains. The chapter considers what is involved in making all forms of knowledge capital available, accessible, and consumable in a network. Making knowledge available involves articulation – semantic, linguistic, visual, acoustic, and kinesthetic. Making knowledge accessible means encoding the knowledge, formatting, and packaging it as a message. The chapter also addresses factors that influence knowledge consumption, including coherence, completeness, verifiability, usefulness, relevance, orientation, freshness, and redundancy. The authors also provide examples of messaging human, structural, and relational capital.

We review literature linking patterns of vocal accommodation in the paraverbal range of the voice to small group structures of status and dominance. We provide a thorough overview of the current state of vocal accommodation research, tracing the development of the model from its early focus on patterns of mutual vocal adaptation, to the current focus on structural factors producing patterns of unequal accommodation between group members. We also highlight gaps in existing knowledge and opportunities to contribute to the development of vocal accommodation as an unobtrusive, nonconscious measure of small group hierarchies.

We trace the empirical development of vocal accommodation as a measure of status and power, and discuss connections between vocal accommodation and two prominent theoretical frameworks: communication accommodation theory (CAT) and expectation states theory. We also provide readers with a guide for collecting and analyzing vocal data and for calculating two related measures of vocal accommodation.

Across multiple studies, vocal accommodation significantly predicts observers’ perceptions regarding interactants engaged in debates and interviews. Studies have specifically linked vocal accommodation to perceptions of relative power or dominance, but have not shown a relationship between accommodation and perceptions of prestige.

Vocal accommodation measures have clear applications for measuring and modeling group dynamics. More work is needed to understand how accommodation functions in clearly-defined status situations, how the magnitude of status differences affects the degree of accommodation inequality, and how vocal accommodation is related to other correlates of social status, including openness to influence and contributions to group tasks.

This chapter addresses the political history of aircraft noise annoyance and its relationship to sustainability.

Using extensive case studies and secondary sources, the chapter shows how a particular approach to noise annoyance that emerged already accepted large-scale annoyance. The focus is directed towards the black boxing of political decisions with scientific knowledge.

This contribution demonstrates that noise annoyance policy has shaped citizens’ perceptions of aircraft sound and has intensified the associated annoyance. Finally, the discussion considers the significance of the participation of citizens and the political implications of these findings. Currently, participation is predominantly confined within a growth paradigm and reproduces tensions in ecological modernization policies. Participation and protest can inadvertently engage these tensions and question the participatory practices themselves. A moratorium on ‘growth’ might create the necessary space for fundamentally rethinking aviation and sustainability.

With a push toward inclusion of students with disabilities in the general education classroom, students who are d/Deaf or hard of hearing (DHH) are exposed to greater educational opportunities. Given the largely verbal nature of traditional classroom instruction, there has been a need for advancements in technology to provide more access to the material covered by teachers and in class discussions. In addition, the COVID-19 pandemic and the transition to virtual learning also brought to light many additional challenges for the DHH population, which can, in part, be lessened through technological advancements.

This chapter explores the potential for musical medievalism within metal, exploring the ways in which metal musicians have sought to include ‘authentic’ medieval musical languages within their music. The medieval repertoire poses many challenges even for early music specialists, and the musical idioms of metal and medieval music rarely overlap, leading many medievalist metal bands to rely instead on normative metal styles with occasional references to specific identifiable melodies. The chapter focusses particularly on the American metal band Obsequiae, who have drawn inspiration particularly from the medieval polyphonic repertoire, which required creating much more oblique musical connections. Obsequiae’s albums feature acoustic guitar and harp arrangements of medieval polyphonic works, but their metal songs likewise adopt some general qualities of medieval polyphony. The obscure nature of the connections is likely beyond many listeners, but paradoxically the lack of obvious musical medievalism can also cultivate the appearance of a deeper connection.