What criteria are used to evaluate sound quality and how to determine if the sound is clear and well heard?

The criteria for assessing sound quality include:

• Sound clarity: absence of noise, distortions, background.
• Speech or instrument intelligibility: clear distinction of sound elements.
• Dynamic range: difference between the quietest and loudest sounds.
• Frequency range: coverage of low, mid, and high frequencies.
• Absence of distortions: such as clipping or echo.

To determine if the sound is clean and well heard, you can:

• Listen to the recording on quality speakers or headphones.
• Check for the absence of extraneous noises and distortions.
• Ensure that the voice or main sound is clearly audible and not muffled by background.
• Use spectral analysis to visualize frequencies and identify noises.

In programming, libraries that measure noise level, spectrum, and other parameters are often used for sound analysis.