ComfyUI Node: Audio Visualizer

Audio Visualizer:

SaltAudioVisualizer is a powerful node designed to transform audio data into visual representations, making it easier for you to analyze and interpret audio signals. This node is particularly useful for creating visualizations that can help in understanding the structure and dynamics of audio files, such as music tracks, voice recordings, or any other sound data. By converting audio into visual plots, you can gain insights into the amplitude, frequency, and other characteristics of the audio over time. This can be beneficial for tasks like audio editing, sound design, and even for creating visually appealing audio-reactive art. The main goal of SaltAudioVisualizer is to provide a clear and intuitive way to visualize audio data, making it accessible and useful for both technical and creative applications.

Audio Visualizer Input Parameters:

audio

The audio parameter is the audio data that you want to visualize. This can be any audio file in a supported format such as WAV, MP3, OGG, FLAC, or AIFF. The audio data is processed to extract the relevant samples for visualization. The quality and characteristics of the visualization will depend on the quality and content of the audio file provided.

frame_rate

The frame_rate parameter determines the number of frames per second in the visualization. A higher frame rate will result in a more detailed and smoother visualization, while a lower frame rate will produce a more coarse representation. The frame rate should be chosen based on the desired level of detail and the length of the audio segment being visualized. Typical values range from 24 to 60 frames per second.

start_frame

The start_frame parameter specifies the starting frame of the audio segment to be visualized. This allows you to focus on a specific part of the audio file. The value is an integer representing the frame number, with a default value of 0, meaning the visualization will start from the beginning of the audio file.

end_frame

The end_frame parameter specifies the ending frame of the audio segment to be visualized. This allows you to limit the visualization to a specific portion of the audio file. The value is an integer representing the frame number, with a default value of -1, meaning the visualization will continue until the end of the audio file.

Audio Visualizer Output Parameters:

visualization_image

The visualization_image parameter is the output of the node, which is a visual representation of the audio data. This is typically a PNG image file that shows the amplitude of the audio signal over time, plotted against the frame numbers. The visualization helps in understanding the audio's structure and dynamics, making it easier to identify patterns, peaks, and other characteristics.

Audio Visualizer Usage Tips:

• To achieve a high-quality visualization, use audio files with a high sample rate and good clarity.
• Adjust the frame_rate parameter to balance between detail and performance; higher frame rates provide more detail but may require more processing power.
• Use the start_frame and end_frame parameters to focus on specific sections of the audio file, which can be useful for analyzing particular segments or events within the audio.

Audio Visualizer Common Errors and Solutions:

"Invalid audio file format"

• Explanation: The provided audio file is not in a supported format.
• Solution: Ensure that the audio file is in one of the supported formats: WAV, MP3, OGG, FLAC, or AIFF.

"Audio file not found"

• Explanation: The specified audio file could not be located in the input directory.
• Solution: Verify that the audio file exists in the correct directory and that the file path is correctly specified.

"Frame rate must be a positive integer"

• Explanation: The frame_rate parameter is set to a non-positive value.
• Solution: Set the frame_rate parameter to a positive integer value, typically between 24 and 60.

"Start frame must be less than end frame"

• Explanation: The start_frame parameter is set to a value greater than or equal to the end_frame parameter.
• Solution: Ensure that the start_frame parameter is less than the end_frame parameter to define a valid range for visualization.