ComfyUI Node: Normalized Amplitude To Float or Int

Normalized Amplitude To Float or Int:

The NormalizedAmplitudeToNumber node is designed to convert normalized amplitude values into numerical representations, specifically floating-point and integer values. This node is particularly useful in audio processing workflows where you need to manipulate or analyze amplitude data that has been normalized. By providing options to add a specific value to the amplitude based on a threshold and capping the result to a ceiling value, this node offers flexibility in how the amplitude data is transformed. This can be beneficial for tasks such as dynamic range compression, normalization, or other audio effects that require precise control over amplitude values.

Normalized Amplitude To Float or Int Input Parameters:

normalized_amp

This parameter represents the normalized amplitude values that you want to convert. Normalized amplitude values typically range between 0 and 1, where 0 represents silence and 1 represents the maximum amplitude. This input is essential as it forms the basis of the conversion process.

add_to

This parameter allows you to specify a floating-point value to be added to the normalized amplitude values. The addition occurs only if the normalized amplitude exceeds a specified threshold. The default value is 0.0, with a minimum of 0.0 and a maximum of 4.0, adjustable in steps of 0.05. This parameter is useful for boosting the amplitude values conditionally.

threshold_for_add

This parameter sets the threshold above which the add_to value will be added to the normalized amplitude. The default value is 0.0, with a range from 0.0 to 1.0, adjustable in steps of 0.01. This threshold helps in selectively boosting amplitude values that are above a certain level, allowing for more nuanced control.

add_ceiling

This parameter defines the maximum value to which the modified amplitude values can be clipped. The default value is 1.0, with a minimum of 0.1 and a maximum of 4.0, adjustable in steps of 0.1. This ensures that the resulting amplitude values do not exceed a specified limit, preventing potential distortion or clipping in the audio signal.

Normalized Amplitude To Float or Int Output Parameters:

FLOAT

This output provides the modified amplitude values as floating-point numbers. These values reflect the original normalized amplitudes, adjusted by the add_to parameter if they exceed the threshold_for_add, and clipped to the add_ceiling. This output is useful for further audio processing or analysis tasks that require precise amplitude values.

INT

This output provides the modified amplitude values as integers. The integer values are derived from the floating-point output by converting them to their nearest integer representation. This can be useful for tasks that require discrete amplitude levels or for interfacing with systems that operate on integer values.

Normalized Amplitude To Float or Int Usage Tips:

• Use the add_to parameter to conditionally boost amplitude values that exceed a certain threshold, allowing for dynamic range adjustments.
• Set the threshold_for_add parameter to control which amplitude values get boosted, enabling selective enhancement of louder parts of the audio signal.
• Adjust the add_ceiling parameter to prevent the modified amplitude values from exceeding a specified limit, ensuring that the audio signal remains within a desired range.

Normalized Amplitude To Float or Int Common Errors and Solutions:

ValueError: min_amplitude 'X' cannot be higher than max_amplitude 'Y'

• Explanation: This error occurs when the minimum amplitude value is set higher than the maximum amplitude value.
• Solution: Ensure that the min_amplitude parameter is always less than or equal to the max_amplitude parameter.

RuntimeWarning: invalid value encountered in greater

• Explanation: This warning indicates that there are invalid (NaN or infinite) values in the normalized amplitude array.
• Solution: The node automatically handles NaN and infinite values by setting them to 0.0 and 1.0, respectively. Ensure that your input data is clean and preprocessed to minimize such occurrences.

Clipping values to the add_ceiling

• Explanation: This message indicates that some amplitude values have been clipped to the add_ceiling value.
• Solution: If clipping is undesirable, consider increasing the add_ceiling parameter or adjusting the add_to and threshold_for_add parameters to reduce the likelihood of exceeding the ceiling.