CavinHuang-comfyui-nodes-docs/nodes-docs/en-US/SaltAI_AudioViz/docs/SaltAudioBassBoost.md

tags

tags
Audio

Audio Bass Boost

Documentation

• Class name: SaltAudioBassBoost
• Category: SALT/Audio/Effect
• Output node: False

This node enhances the bass frequencies of an audio input, applying a low-pass filter and gain increase to boost the lower end of the audio spectrum.

Input types

Required

• audio
  • The raw audio data to be processed for bass enhancement.
  • Comfy dtype: AUDIO
  • Python dtype: bytes
• cutoff_freq
  • The frequency below which the audio will be boosted, serving as the threshold for the low-pass filter.
  • Comfy dtype: INT
  • Python dtype: int
• boost_dB
  • The amount of gain to apply to the frequencies below the cutoff, measured in decibels.
  • Comfy dtype: FLOAT
  • Python dtype: float

Output types

• audio
  • Comfy dtype: AUDIO
  • The modified audio data with enhanced bass frequencies.
  • Python dtype: bytes

Usage tips

• Infra type: CPU
• Common nodes: unknown

Source code

class SaltAudioBassBoost:
    @classmethod
    def INPUT_TYPES(cls):
        return {
            "required": {
                "audio": ("AUDIO", {}),
                "cutoff_freq": ("INT", {"default": 150, "min": 20, "max": 300, "step": 1}),
                "boost_dB": ("FLOAT", {"default": 5.0, "min": 0.0, "max": 24.0, "step": 0.1}),
            },
        }

    RETURN_TYPES = ("AUDIO",)
    RETURN_NAMES = ("audio",)
    FUNCTION = "boost_bass"
    CATEGORY = "SALT/Audio/Effect"

    def boost_bass(self, audio, cutoff_freq, boost_dB):
        original = AudioSegment.from_file(io.BytesIO(audio), format="wav")
        
        low_pass_gain = original.low_pass_filter(cutoff_freq).apply_gain(boost_dB)
        if len(low_pass_gain) > len(original):
            low_pass_gain = low_pass_gain[:len(original)]

        boosted = original.overlay(low_pass_gain, position=0)
        
        return (get_buffer(boosted), )