Audio Volume

Documentation

Class name: SaltChangeAudioVolume
Category: SALT/Audio/Process
Output node: False

The SaltChangeAudioVolume node is designed to adjust the volume of an audio file. It modifies the volume level by a specified number of decibels, allowing for both amplification and attenuation of the audio signal.

Input types

Required

audio
- The 'audio' parameter represents the audio file to be processed. It is the primary input for volume adjustment.
- Comfy dtype: AUDIO
- Python dtype: bytes
volume_decibals
- The 'volume_decibals' parameter specifies the amount by which to increase or decrease the volume of the audio. Positive values amplify the sound, while negative values attenuate it.
- Comfy dtype: FLOAT
- Python dtype: float

Output types

audio
- Comfy dtype: AUDIO
- The modified audio file with the adjusted volume level.
- Python dtype: bytes

Usage tips

Infra type: CPU
Common nodes: unknown

Source code

class SaltChangeAudioVolume:
    @classmethod
    def INPUT_TYPES(cls):
        return {
            "required": {
                "audio": ("AUDIO", ),
                "volume_decibals": ("FLOAT", {"min": -60, "max": 60, "default": 0, "step": 0.01}),
            },
        }

    RETURN_TYPES = ("AUDIO",)
    RETURN_NAMES = ("audio",)
    FUNCTION = "change_volume"
    CATEGORY = "SALT/Audio/Process"

    def change_volume(self, audio_data, volume_decibals):
        audio_segment = AudioSegment.from_file(io.BytesIO(audio_data), format="wav")
        modified_audio_segment = audio_segment + volume_decibals
        return (get_buffer(modified_audio_segment), )

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