第八百零四章 琴弦
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看到刘思哲一脸尴尬的模样，楚琛就笑问道：“你应该知道古代的时候，用的都是丝弦吧？”
“知道。”刘思哲点了点头。
今天弹琴用弦，一般都是使用的钢弦。而在古代，琴弦则是用蚕丝制作的。
相传蚕最乖巧，作茧时往往能遇物成形。有一寡妇。独居一室，长夜倚枕。不能安睡。她就倚在床头，从墙孔中看邻居家中的蚕做茧。第二天。蚕茧的形状都有点像这个寡妇的面形，隐隐约约是一副愁眉苦脸的样子。
蔡邕见了，就将蚕茧买回来，缫丝后制成琴弦，安在古琴上。弹奏时琴音总带点忧愁哀痛之声，旁人听了，常常会流下同情的泪水。蔡邕就向女儿蔡文姬询问其中道理，文姬回答说：“这是寡妇丝。”
“丝”与“思”同音，寡妇之思，当然是悲伤婉转，缠绵悱恻。这个故事还说明一个问题：即古琴的弦用蚕丝制成，取其坚韧而发音纯正。
楚琛说道：“宋以前琴弦多是琴家自制，明以后多为商品弦。明清以來，琴弦最好首推杭城回.回堂，其第一代李世英自明代开始生产古琴弦，所造的弦叫‘冰弦’，指定为内府贡品。”
“李家传承了三百余年，直到清道光年间第九代孙李德孚殁后无嗣，于是就断产了，而后由其徒弟继续以回.回堂为品牌生产琴弦，但质量大不如前，1939年抗战初杭城老三泰的“回.回堂琴弦”停产。一时间，众多琴家都哀叹，从此再无好弦可用。”
听了楚琛的解释，刘思哲才算明白冰弦是什么意思，他说道：“现在不都是用钢弦了吗？小月的琴就是钢弦，我听着觉得也挺不错的嘛！”
“所以说，我要说你是对牛弹琴。”
刘老今天就是想挑刘思哲的刺，他说道：“钢弦虽然耐用、稳定，特别是表面光滑的优点，改变了弹奏一些缓慢的“声少韵多”的琴曲，如《平沙落雁》、《忆故人》、《良宵引》时的尴尬，为琴人所称道。但它那令人生厌的金属声，它那过于冗长的余音等等缺陷也是大多数琴人的共识。”
刘思哲也据理力争道：“传统丝弦也有很多缺点的，除去琴弦上不如钢弦平滑，摩擦声大的缺点之外，性能上也不够稳定，较大程度受到温度与湿度的影响，不耐用，使用成本高。而且别的说不，丝弦的音量能有钢弦的大吗？”
刘老到是没想到，刘思哲记得还挺清楚，这说明，刘思哲确实是用心学了，这让他暗自很是高兴，不过他可是丝弦的拥护者，马上就反驳道：
“钢弦音量虽大，却没有传统丝弦那种饱满的音质和力度，缺乏传统丝弦弹奏的那种‘颗粒感’，那种‘骨力’，琴音呈现一种‘疲沓’的状态。无论对琴弦用力弹奏还是轻弹，它的状况是相同的，这种状态影响到琴曲音乐的表现力是毫无疑问的了。”
“重要的是，钢弦所产生的音色，缺乏丝弦那种传统琴乐怀古之思的、极为接近人声的‘韵味’，即那种温暖的带有某种人情味的色彩。钢弦的音色，当初我头一次听到的时候，就觉得相当的刺耳，也不知道，现在的人是怎么接受的了的。”
刘思哲嘀咕道：“要我说，这事还是你们的问题，如果当初你们反对的话，钢弦也不可能那么轻松的被大家接受。”
刘老闻言就长叹了一口气，当初从丝弦转换成钢弦可以说悄无声息的就完成了，究其原因，除了一时制作不出好的丝弦之外，也是由于当时正好处于国家的特殊时期，钢弦作用一种新事物，根本没有人敢于反对。(未完待续。。)u
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