lingmusicnote.com/2025/10/20/維也納-藝術史博物館-kunsthistorisches-museum-wien/
New York Piano Tuner : I used ear tuning (also known as auditory tuning) and state-of-the-art software-based electronic tuning equipment for sound tuning. (The frequency for home concert tuning is 442 Hz.) 我采用耳调音法（也称听觉调音法）和最先进的基于软件的电子调音设备进行调音。（家用音乐会调音的频率为 442 Hz） Chen YN 调音主页
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