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[ 源代码: libsbsms  ]

软件包:libsbsms10(2.0.2-2)

libsbsms10 的相关链接

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Subband Sinusoidal Modeling Synthesis

libsbsms is a C++ library for high quality time stretching and pitch scaling of audio. It uses octave subband sinusoidal modeling.

The audio is fed into a FIFO, which takes the STFT of the input. Each frame is high-pass filtered in the Fourier domain, and then written to a frame FIFO which does quadratic interpolating peak detection and track continuation. The tracks are resynthesized with a quadratic phase preserving oscillator bank at an arbitrary time scale.

The subbands are fed from the low-pass filtered frames, which are decimated by two and reconstructed in a half rate time domain. The subbands perform the same process as the parent band, only the data is at half the audio frequency, and at half the rate. There are typically 6 bands. The point of subbands is to allow high time resolution for high frequencies and at the same time high frequency resolution for low frequencies.

Pitch scaling is performed in a post-processing resampling step.

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硬件架构 软件包大小 安装后大小 文件
amd64 103.6 kB278.0 kB [文件列表]
arm64 107.0 kB266.0 kB [文件列表]
armel 104.1 kB318.0 kB [文件列表]
armhf 100.5 kB222.0 kB [文件列表]
i386 99.7 kB286.0 kB [文件列表]
mips64el 108.2 kB313.0 kB [文件列表]
mipsel 111.0 kB306.0 kB [文件列表]
ppc64el 120.8 kB318.0 kB [文件列表]
s390x 102.0 kB318.0 kB [文件列表]