2 results about "Harmonic structure" patented technology

This invention belongs to the field of music data processing and relates to a symbolic music classification method and system based on Tonnetz spatiotemporal graphs. The method generates a two-dimensional grid of symbolic music data, consisting of time frames and pitches, and defines graph nodes and initial features for each grid point. Discrete note events are organized into structured nodes. Based on this two-dimensional grid, graph nodes corresponding to pitches that satisfy Tonnetz interval relationships are connected within the same time frame to form spatial edges. These spatial edges explicitly introduce consonant interval relationships between pitches, allowing the model to directly obtain structural information with musicological significance without relying on large amounts of data for self-learning, thus solving the problem of insufficient utilization of harmonic structure. Furthermore, graph nodes with the same pitch or pitch differences within a preset range are connected between adjacent time frames to form temporal edges. These temporal edges directly encode the continuous and stepwise motion of unison parts during voice progression, enabling the model to capture the dynamic evolution of music in the time dimension and solving the problem of missing voice progression characterization.

The application provides a speech synthesis method and device, computer equipment and a storage medium. The method comprises obtaining a target score to be processed, and extracting score features in the target score; determining acoustic features corresponding to the score features according to the score features and a pre-trained acoustic model; generating an initial waveform with a harmonic structure based on fundamental frequency information in the acoustic features; and generating a target audio corresponding to the target score according to the acoustic features and the initial waveform. After the acoustic model is used to obtain acoustic features including a fundamental frequency, energy, a mel-frequency spectrum and the like, an initial waveform with a harmonic structure is generated based on the fundamental frequency information in the acoustic features, which can effectively avoid possible fundamental frequency jitter in the subsequently synthesized audio, guarantee the pitch continuity and pronunciation stability of the target audio generated based on the acoustic features and the initial waveform, and thus improve the speech synthesis effect.