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Continuous frequency and phase spectrograms: a study of their 2D and 3D capabilities and application to musical signal analysis 被引量:1

Continuous frequency and phase spectrograms:a study of their 2D and 3D capabilities and application to musical signal analysis
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摘要 A new lighting and enlargement on phase spectrogram (PS) and frequency spectrogram (FS) is presented in this paper. These representations result from the coupling of power spectrogram and short time Fourier transform (STFT). The main contribution is the construction of the 3D phase spectrogram (3DPS) and the 3D frequency spectrogram (3DFS). These new tools allow such specific test signals as small slope linear chirp, phase jump case of musical signal analysis is reported. The main objective is to and small frequency jump to be analyzed. An application detect small frequency and phase variations in order to characterize each type of sound attack without losing the amplitude information given by power spectrogram A new lighting and enlargement on phase spectrogram(PS)and frequency spectrogram(FS)is presented in this paper.These representations result from the coupling of power spectrogram and short time Fourier transform(STFT).The main con-tribution is the construction of the 3D phase spectrogram(3DPS)and the 3D frequency spectrogram(3DFS).These new tools allow such specific test signals as small slope linear chirp,phase jump and small frequency jump to be analyzed.An application case of musical signal analysis is reported.The main objective is to detect small frequency and phase variations in order to characterize each type of sound attack without losing the amplitude information given by power spectrogram.
出处 《Journal of Zhejiang University-Science A(Applied Physics & Engineering)》 SCIE EI CAS CSCD 2008年第2期199-206,共8页 浙江大学学报(英文版)A辑(应用物理与工程)
关键词 Frequency spectrogram (FS) Phase spectrogram (PS) Time-frequency representations Musical signals 信号分析 通信技术 频率光谱 相位光谱
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