The Impact of Audio Effects Processing on the Perception of Brightness and Warmth
The Impact of Audio Effects Processing on the Perception of Brightness and Warmth
复制标题
音频效果处理对亮度和温暖感感知的影响
DOI：
10.1145/3356590.3356618
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发表时间：
2019
期刊：
影响因子：
--
通讯作者：
György Fazekas
中科院分区：
文献类型：
--
作者：
Gary Bromham;D. Moffat;M. Barthet;Anne Danielsen;György Fazekas
在描述老式混音控制台、多轨磁带机和气门压缩机等模拟技术时，音乐家和音频工程师经常会提到温暖和亮度。可能不太常见的是听到这个词与复古数字技术联系在一起。当使用模拟早期采样技术的音频效果进行处理时，存在一个问题，即低比特率和低等级转换质量对声音的整体亮度或温暖度有多大贡献。众所周知，音色的这两个维度很难定义，更重要的是很难测量。我们提出了一个主观用户的亮度和温暖的研究，其中一系列的音频示例处理不同的音频效果。26名参与者对5种不同音频效果的不同乐器序列的亮度和温暖程度进行了评分，包括比特深度减少、压缩和均衡。结果表明，8位的减少倾向于增加亮度和减少温暖，而12位的减少倾向于相反，尽管这在很大程度上取决于仪器。有趣的是，由于比特减少，最显著的亮度变化是在低音中获得的。为了比较目的，仪器短语也用模拟压缩机和均衡插件进行处理，以查看在模拟可能与温暖相关的声音特性时是否注意到任何主观差异。当使用插件来模拟比特深度减小的影响时，可以观察到更大的意义。
It is not uncommon to hear musicians and audio engineers speak of warmth and brightness when describing analog technologies such as vintage mixing consoles, multitrack tape machines, and valve compressors. What is perhaps less common, is hearing this term used in association with retro digital technology. A question exists as to how much the low bit rate and low-grade conversion quality contribute to the overall brightness or warmth of a sound when processed with audio effects simulating early sampling technologies. These two dimensions of timbre are notoriously difficult to define and more importantly, measure. We present a subjective user study of brightness and warmth, where a series of audio examples are processed with different audio effects. 26 participants rated the perceived level of brightness and warmth of various instrumental sequences for 5 different audio effects including bit depth reduction, compression and equalisation. Results show that 8 bit reduction tends to increase brightness and decrease warmth whereas 12 bit reduction tends to do the opposite, although this is very much dependent on the instrument. Interestingly, the most significant brightness changes, due to bit reduction, were obtained for bass sounds. For comparison purposes, instrument phrases were also processed with both an analogue compressor and an equalisation plugin to see if any subjective difference was noticed when simulating sonic characteristics that might be associated with warmth. Greater significance was observed when the sound excerpts were processed with the plugins being used to simulate the effects of bit depth reduction.
影响因子：
1.6
作者：
Moffat D
通讯作者：
Moffat D