Developer generates first Phonon WAV file using pinned English model on CPU

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A developer produced a 1.84-second mono WAV file saying 'Hello from Phonon' using the public English phonon-31m-en checkpoint, pinned to a specific revision. The walkthrough used the ptts 0.6.0 command-line tool, which wraps a native implementation and avoids installing PyTorch. Running the command without an explicit language flag failed, because the tool requires one for text normalization. The developer verified the output as 24,000 Hz mono audio with 44,160 frames and confirmed the samples were not silent. The checks establish only a working output path, not speech intelligibility or quality, and the English checkpoint's Apache-2.0 license should not be assumed for other Phonon models.

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