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Vokoder Penyebaran DiffWave
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MelGAN is a non-autoregressive, fully convolutional GAN vocoder that maps mel-spectrograms to audio waveforms.
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Its paper reports real-time synthesis speed on specified CPU and GPU hardware; those measurements do not imply embedded-device or production suitability.
MelGAN, introduced by Kumar et al. in 2019, is a non-autoregressive, fully convolutional GAN for conditional waveform synthesis. Its generator upsamples a mel-spectrogram through transposed convolutions, with residual blocks using dilated convolutions. The paper uses multi-scale waveform discriminators and a feature-matching loss to train the generator. It reports qualitative demonstrations in speech synthesis, music-domain translation, and unconditional music synthesis, and uses Mean Opinion Score as a subjective evaluation measure. The authors report that their PyTorch implementation ran at over 100 times real time on a GTX 1080 Ti GPU and over twice real time on CPU without hardware-specific optimizations. These measurements apply to the reported implementation and hardware, not to every deployment or device.
Reproduce the paper’s mel-spectrogram inversion experiment and compare generated waveform quality.
Use the paper’s speech-synthesis and music-domain demonstrations as separate research tasks.
Report mean opinion score when comparing listening quality under the same evaluation conditions.
Measure latency on the target CPU or GPU rather than inferring deployment speed from a different device.
MelGAN provides a research example of non-autoregressive GAN-based waveform synthesis. For a current application, compare audio quality and latency against alternative vocoders on the target data and hardware; the cited paper alone does not establish suitability for mobile, embedded, or streaming deployments.
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MelGAN is a non-autoregressive, fully convolutional GAN vocoder that maps mel-spectrograms to audio waveforms. Its paper reports real-time synthesis speed on specified CPU and GPU hardware; those measurements do not imply embedded-device or production suitability.
MelGAN ialah vocoder: ia memerlukan perwakilan ciri akustik, mel-spektrogram, dan mensintesis bentuk gelombang yang sepadan.
WaveNet menjana sampel satu demi satu secara autoregresif; Penjana konvolusi MelGAN menghasilkan keseluruhan bentuk gelombang dalam satu hantaran hadapan selari.
MelGAN menggunakan berbilang diskriminator yang sama yang memeriksa bentuk gelombang asal dan versi yang dikurangkan untuk menangkap struktur pada skala yang berbeza.
Kehilangan padanan ciri meminimumkan jarak L1 antara peta ciri diskriminator untuk audio sebenar dan terjana, membimbing penjana dan menstabilkan latihan.
Blok sisa dengan lilitan diluaskan meluaskan medan penerimaan dengan cekap, membiarkan penjana model struktur temporal jarak jauh.
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