RVC-Boss/GPT-SoVITS · error · ValueError

The following condition must be satisfied: min_length >= min

Error message

The following condition must be satisfied: min_length >= min_interval >= hop_size

What it means

ValueError from Slicer.__init__: the audio slicer's parameters must satisfy min_length >= min_interval >= hop_size (values in milliseconds). These derive window geometry — win_size = min(min_interval, 4*hop_size) — and a violation would produce non-sensitive or negative window sizes, so the constructor refuses it immediately.

Source

Thrown at tools/slicer2.py:49

    # Calculate power
    power = np.mean(np.abs(x) ** 2, axis=-2, keepdims=True)

    return np.sqrt(power)


class Slicer:
    def __init__(
        self,
        sr: int,
        threshold: float = -40.0,
        min_length: int = 5000,
        min_interval: int = 300,
        hop_size: int = 20,
        max_sil_kept: int = 5000,
    ):
        if not min_length >= min_interval >= hop_size:
            raise ValueError("The following condition must be satisfied: min_length >= min_interval >= hop_size")
        if not max_sil_kept >= hop_size:
            raise ValueError("The following condition must be satisfied: max_sil_kept >= hop_size")
        min_interval = sr * min_interval / 1000
        self.threshold = 10 ** (threshold / 20.0)
        self.hop_size = round(sr * hop_size / 1000)
        self.win_size = min(round(min_interval), 4 * self.hop_size)
        self.min_length = round(sr * min_length / 1000 / self.hop_size)
        self.min_interval = round(min_interval / self.hop_size)
        self.max_sil_kept = round(sr * max_sil_kept / 1000 / self.hop_size)

    def _apply_slice(self, waveform, begin, end):
        if len(waveform.shape) > 1:
            return waveform[:, begin * self.hop_size : min(waveform.shape[1], end * self.hop_size)]
        else:
            return waveform[begin * self.hop_size : min(waveform.shape[0], end * self.hop_size)]

    # @timeit
    def slice(self, waveform):

View on GitHub (pinned to d523079fc0)

Solutions

1. Fix parameter ordering: choose hop_size <= min_interval <= min_length (defaults 20 <= 300 <= 5000 ms).
2. If you want a bigger hop for speed, raise min_interval/min_length accordingly (e.g. hop 60 → min_interval >= 60).
3. Clamp/sort user-supplied values in UI code before constructing Slicer.
4. Reset to defaults in the webui advanced panel if unsure.

Example fix

# before
slicer = Slicer(32000, min_length=2000, min_interval=3000, hop_size=10)  # ValueError

# after
# enforce ordering
hop, interval, length = sorted([hop_size, min_interval, min_length])
slicer = Slicer(32000, min_length=length, min_interval=interval, hop_size=hop)

hop, interval, length = sorted([hop_size, min_interval, min_length])
slicer = Slicer(sr, min_length=length, min_interval=interval, hop_size=hop)

def valid_slicer_params(min_length: int, min_interval: int, hop_size: int) -> bool:
    return min_length >= min_interval >= hop_size

When it happens

Trigger: Constructing Slicer(sr, min_length=..., min_interval=..., hop_size=...) (or calling the slicing webui/API with custom params) where min_interval > min_length or hop_size > min_interval, e.g. Slicer(32000, min_length=5000, min_interval=6000) or hop_size=400 with min_interval=300.

Common situations: User tweaks UVR5/slicing config for very aggressive silence removal and inverts a value; config file edited by hand; defaults overridden partially (large hop for speed) leaving the ordering violated.

Related errors

• The following condition must be satisfied: max_sil_kept >= h
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AI-assisted analysis of RVC-Boss/GPT-SoVITS@d523079fc0 (2026-08-15). Data as JSON: /api/errors/bff1ac05243ae735. Report an issue: GitHub.