66 lines
1.8 KiB
Markdown
66 lines
1.8 KiB
Markdown
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# Documentation
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- Class name: SaltAudioBassBoost
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- Category: SALT/Audio/Effect
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- Output node: False
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本节点对音频输入的低频部分进行增强，通过应用低通滤波器和增加增益来提升音频频谱的低端部分。
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# Input types
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## Required
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- audio
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- 待处理的原始音频数据，用于进行低音增强。
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- Comfy dtype: AUDIO
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- Python dtype: bytes
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- cutoff_freq
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- 低通滤波器的截止频率，低于此频率的音频将被增强。
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- Comfy dtype: INT
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- Python dtype: int
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- boost_dB
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- 对低于截止频率的频段施加的增益量，以分贝为单位。
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- Comfy dtype: FLOAT
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- Python dtype: float
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# Output types
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- audio
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- 经过低音增强处理后的音频数据。
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- Comfy dtype: AUDIO
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- Python dtype: bytes
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## Usage tips
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- Infra type: `CPU`
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- Common nodes: unknown
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## Source code
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```python
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class SaltAudioBassBoost:
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@classmethod
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def INPUT_TYPES(cls):
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return {
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"required": {
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"audio": ("AUDIO", {}),
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"cutoff_freq": ("INT", {"default": 150, "min": 20, "max": 300, "step": 1}),
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"boost_dB": ("FLOAT", {"default": 5.0, "min": 0.0, "max": 24.0, "step": 0.1}),
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},
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}
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RETURN_TYPES = ("AUDIO",)
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RETURN_NAMES = ("audio",)
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FUNCTION = "boost_bass"
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CATEGORY = "SALT/Audio/Effect"
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def boost_bass(self, audio, cutoff_freq, boost_dB):
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original = AudioSegment.from_file(io.BytesIO(audio), format="wav")
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low_pass_gain = original.low_pass_filter(cutoff_freq).apply_gain(boost_dB)
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if len(low_pass_gain) > len(original):
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low_pass_gain = low_pass_gain[:len(original)]
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boosted = original.overlay(low_pass_gain, position=0)
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return (get_buffer(boosted), )
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```
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