Research on rock harmony accords with common practice in guitar playing in that power chords (fifth interval) with an indeterminate chord quality as well as major chords are preferred to more complex chords when played with a distorted tone. This study explored the interrelated effects of distortion and harmonic structure on acoustic features and perceived pleasantness of electric guitar chords. Extracting psychoacoustic parameters from guitar tones with Music Information Retrieval technology revealed that the level of distortion and the complexity of interval relations affects sensorial pleasantness. A listening test demonstrated power and major chords being perceived as significantly more pleasant than minor and altered dominant chords when being played with an overdriven or distorted guitar tone. This result accords with musical practice within rock genres. Rather clean rock styles such as blues or classic rock use major chords frequently, whereas subgenres with more distorted guitars such as heavy metal largely prefer power chords. Considering individual differences, electric guitar players rated overdriven and distorted chords as significantly more pleasant. Results were ambiguous in terms of gender but indicated that women perceive distorted guitar tones as less pleasant than men. Rock music listeners were more tolerant of sensorial unpleasant sounds.

中文翻译：

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失真与摇滚吉他和谐

摇滚和声的研究与吉他演奏中的常规做法相一致，即在以失真的音调演奏时，具有不确定的和弦质量的强力和弦（第五和弦）以及大和弦比更复杂的和弦更可取。这项研究探讨了失真和谐波结构对电吉他和弦的声学特征和感知的愉悦感的相互关系。使用“音乐信息检索”技术从吉他音调中提取心理声学参数表明，失真程度和间隔关系的复杂性会影响感觉愉悦感。听力测试表明，用过分或扭曲的吉他音色演奏时，力量和主要和弦比次要和改变的主要和弦感觉更加愉悦。这一结果符合摇滚流派中的音乐实践。较为干净的摇滚风格（例如布鲁斯或经典摇滚）经常使用大和弦，而吉他失真较大的子流派（例如重金属）则更喜欢大功率和弦。考虑到个人差异，电吉他演奏者将和弦过度和失真的程度评定为更加愉悦。结果在性别上是模棱两可的，但表明女性认为失真的吉他音调不如男性愉悦。摇滚音乐的听众更能容忍感觉不愉快的声音。电吉他演奏者认为和弦过度失真会更加愉悦。结果在性别上是模棱两可的，但表明女性认为失真的吉他音调不如男性愉悦。摇滚音乐的听众更能容忍感觉不愉快的声音。电吉他演奏者认为和弦过度失真会更加愉悦。结果在性别上是模棱两可的，但表明女性认为失真的吉他音调不如男性愉悦。摇滚音乐的听众更能容忍感觉不愉快的声音。