This invention discloses a real-time
piano timbre simulation method and
system based on
machine learning, relating to the field of
audio signal processing technology. The method includes:
data acquisition and multi-dimensional
annotation, acquiring multiple types of
piano audio, covering techniques and seven dynamic levels, and simultaneously acquiring information such as key presses and techniques; audio preprocessing, including pre-emphasis compensation for high frequencies, Hanning window framing,
Fourier transform to
frequency domain,
spectral subtraction for
noise reduction and normalization; multi-dimensional
feature extraction, extracting static features such as MFCC and spectral parameters, dynamic features such as first- and second-order differences, and
overtone structures; two-stage model training, using stacked autoencoders for
dimensionality reduction; real-time
parsing, filtering and converting acquired performance data into parameter sequences;
timbre synthesis, where the model generates a spectrum and performs an inverse
Fourier transform into a waveform; and dynamic optimization, receiving
user feedback. This invention solves the problems of traditional
simulation methods; the two-stage model enhances
timbre coherence,
dynamic control achieves low latency, and multi-
scenario adaptation and feedback optimization meet specific needs.