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FastPitch adalah model text-to-speech sepenuhnya paralel berbasis FastSpeech yang mengkondisikan pembuatan mel-spectrogram pada kontur frekuensi dasar yang diprediksi.
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Because pitch is an explicit input signal to the decoder, users can edit it to change delivery. The paper reports high mel-spectrogram synthesis throughput under its evaluation setup; this does not measure end-to-end waveform generation latency.
FastPitch (Łańcucki, 2020) is a fully parallel TTS model based on FastSpeech. It predicts token durations and fundamental-frequency contours, then conditions a mel-spectrogram decoder on them. During training, the pitch target is averaged over the aligned acoustic frames for each input token. Editing the predicted contour at inference can change intonation without retraining. The paper reports more than 900× real-time factor for mel-spectrogram synthesis of a typical utterance; waveform generation by a vocoder is a separate stage.
Raising or lowering a predicted pitch contour to change the intonation of a generated utterance
Comparing parallel spectrogram synthesis with autoregressive speech-generation pipelines
Inspecting per-phoneme pitch values alongside predicted token durations
Using pitch-conditioned synthesis in controlled TTS experiments
Explicit pitch and duration controls remain useful for interpretable TTS pipelines. Later systems can add energy, emotion, and speaker controls or learn more flexible representations. Runtime comparisons should distinguish mel-spectrogram generation from the complete text-to-waveform pipeline.
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FastPitch is a fully parallel text-to-speech model based on FastSpeech that conditions mel-spectrogram generation on predicted fundamental-frequency contours. Because pitch is an explicit input signal to the decoder, users can edit it to change delivery. The paper reports high mel-spectrogram synthesis throughput under its evaluation setup; this does not measure end-to-end waveform generation latency.
FastPitch menambahkan prediktor nada yang menghasilkan satu nilai frekuensi dasar per token masukan, yang digunakan untuk mengkondisikan dekoder spektogram.
FastPitch bersifat non-autoregresif: ia menghitung semua bingkai keluaran secara bersamaan, bukan selangkah demi selangkah, sehingga jauh lebih cepat daripada model autoregresif.
Pitch is an explicit contour that can be edited to alter intonation; the perceptual effect depends on context and does not guarantee a particular emotion or emphasis.
FastPitch menghitung rata-rata frekuensi dasar kebenaran dasar di setiap bingkai token, sehingga model mempelajari satu nilai nada intuitif per simbol.
The paper reports over 900× real-time factor for mel-spectrogram synthesis; this does not include every downstream vocoder or serving step.
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