ComfyUI Node: Audio Frequency Cutoff

Audio Frequency Cutoff:

The SaltAudioFrequencyCutoff node is designed to apply a frequency cutoff filter to an audio file, allowing you to either remove high frequencies (low-pass filter) or low frequencies (high-pass filter) from the audio. This can be particularly useful for audio processing tasks such as cleaning up noise, isolating certain frequency ranges, or preparing audio for further effects. By leveraging FFmpeg, a powerful multimedia framework, this node ensures efficient and high-quality audio processing. The main goal of this node is to provide a straightforward way to manipulate the frequency content of your audio, enhancing its clarity and focus.

Audio Frequency Cutoff Input Parameters:

audio

This parameter expects the audio data in binary format. It is the raw audio input that you want to process with the frequency cutoff filter. The quality and characteristics of the input audio will directly affect the output results.

filter_type

This parameter specifies the type of filter to apply. It can be either "lowpass" to remove high frequencies or "highpass" to remove low frequencies. Choosing the appropriate filter type is crucial for achieving the desired audio effect.

cutoff_frequency

This parameter defines the cutoff frequency for the filter in Hertz (Hz). Frequencies above this value will be attenuated if using a low-pass filter, and frequencies below this value will be attenuated if using a high-pass filter. The default value is not specified, but typical values range from 20 Hz to 20,000 Hz, depending on the specific audio processing needs.

Audio Frequency Cutoff Output Parameters:

audio

The output parameter is the processed audio data in binary format. This audio will have the specified frequency content removed or attenuated based on the filter type and cutoff frequency provided. The output can be used directly or further processed with other audio effects.

Audio Frequency Cutoff Usage Tips:

• To remove unwanted high-frequency noise, use the "lowpass" filter type with a cutoff frequency around 1000 Hz.
• For isolating bass frequencies, use the "highpass" filter type with a cutoff frequency around 100 Hz.
• Experiment with different cutoff frequencies to find the optimal setting for your specific audio content.

Audio Frequency Cutoff Common Errors and Solutions:

Failed to apply frequency cutoff with FFmpeg

• Explanation: This error occurs when the FFmpeg command fails to execute properly, possibly due to incorrect parameters or issues with the FFmpeg installation.
• Solution: Ensure that the ffmpeg_path is correctly set and that FFmpeg is properly installed on your system. Verify that the input parameters are correctly specified and within valid ranges.