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谐振腔手风琴,是一种具有特殊共鸣效果的手风琴,也称回声手风琴。谐振腔手风琴与普通手风琴的琴箱结构不同。如120贝司四排音谐振腔手风琴,它的琴箱键盘部分由“U”形音孔板构成一个共鸣空腔,低音音列、基音音列安装在腔体内,波音音列、高音音列安装在腔体外,同键不同音列的音簧组合发音由分叉键杆控制(如图)。这样,腔体内音列的音簧发音受到腔体的谐振作用,腔体内外音列的音簧发音共鸣条件不同,而组合发音时两者又相互联系,形成谐振腔结构的频响特性。这种频响
Resonator Accordion, an accordion that has a special resonance effect, also called an echo accordion. Resonant accordion and ordinary accordion box structure is different. Such as the 120 bass four-row resonant resonator accordion, the keyboard part of the keyboard by the “U” shaped sound hole plate to form a resonance cavity, bass, pitch sound column installed in the cavity, the wave of sound bar, treble sound column Installed in the cavity, with different keystroke tone gong combination of pronunciation by the bifurcated key lever control (pictured). In this way, the sound of the gospel in the cavity is resonated by the sound of the cavity, and the gongs of the internal and external sound columns in the cavity have different resonance conditions. When the combined pronunciation is in contact with each other, the frequency response of the cavity structure is formed. This frequency response