什么是齿音?

含义解析

在黑胶唱片领域,齿音(Sibilance)指的是录音中高频“s”、“sh”和“t”音被夸大或刺耳地强调。主流音频术语称之为高频过冲(high-end harshness)。在黑胶收藏领域,它是一种特定的音质缺陷,而非风格选择。它不只是“嘶嘶声”(hiss);嘶嘶声是宽带噪音。齿音是音调性的——它是一种特定的、尖锐的频率尖峰,通常源于母带制作过程或漆盘刻录,在播放时会转化为一种令人不悦的尖锐感。

对价格的影响

齿音是一个负面的质量指标。一张带有明显、令人分心的齿音的压片(pressing)相比于同一发行的干净压片,其价值会被压低。对于一张标准、抢手的专辑,如果存在显著的齿音,其价格可能比同等质量的干净版本低 15%–30%。如果齿音严重到被视为主要缺陷(例如,使人声无法听),唱片可能会被归类为“有缺陷/损坏”,市场价值可能下降 40%–60%。轻微、几乎察觉不到的实例对价格影响可以忽略不计。

如何识别

齿音几乎完全是一个听觉问题,因此目视检查很困难。识别它的主要方法是收听高质量的数字转录件,或者最好是直接听唱片本身。将注意力集中在人声轨道上,特别是快速的段落或耳语部分。没有发行标记或印刷细节可以可靠地指示齿音;它是一个母带制作的伪影(mastering artifact)。如果销售描述对音质描述含糊不清,应该要求卖家提供该曲目的高分辨率片段。当母带工程师在模拟刻录过程中过度推高动态范围时,通常会出现这种诚实的失误。

明智购买

除非该压片本身具有历史意义(例如,尽管有缺陷但以其音色著称的首版压片),否则为带有明显齿音的唱片支付溢价很少是合理的。如果该压片在其他方面都是完美的——品相极佳(mint condition)、稀有、值得拥有——那么为了拥有这件文物,这个缺陷或许可以被接受。然而,对于一般聆听或投资来说,应避免购买。对于存在中度齿音的唱片,一个公平的交易是标价反映了已知的、可量化的音质缺陷,通常比已知干净压片的售价低 20%。

明智销售

销售时,必须清楚地披露齿音。不要隐瞒。如果缺陷很小,请在“轻微音质缺陷”(Minor Sonic Flaws)下列出,并精确说明缺陷(例如,“人声轨道上存在轻微齿音”)。这能管理买家的期望并防止退货。如果齿音很严重,请将其列为“有缺陷/零件机”(Faulty/For Parts)以避免纠纷。在品相备注中简单地写上“有齿音”(Sibilant),并配以清晰的描述,可以避免负面评价,并允许接受该缺陷的买家支付折扣价。

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