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Wind Noise Filter (speech)
High levels of wind can interfere with outdoors audio recordings. Often, audio professionals will apply a fixed High Pass Filter to the recording to reduce this annoyance. But, this approach also damages the good audio that one is trying to capture. The Diamond Cut Wind Noise Filter (speech) is a special IIR based dynamic filter using multiple bands across the lower end of the audio spectrum (ranging from 20 Hz to 500 Hz). It dynamically activates these filters depending on the measured presence of random noise within any of those bands leaving behind the good audio while attenuating the random wind noise. Although this is not a perfect filter, it is very useful in spoken word outdoor situations and can produce a greatly improved result compared to the fixed High Pass Filter approach to the problem.
Wind Noise Filter
Threshold Control: (1.0 to 50.0) Increased aggressive filtering action occurs at lower threshold control settings. The least aggressive setting is 50.0 (all the way up). Adjust this control until the “Wind Level” meter is fluctuating in sync with the wind noise, and the wind noise is dynamically being reduced by the filter.
Attenuation Control: (0.01 to 1.00) This slider control allows you to set the amount of attenuation provided by the Wind Noise Filter. The maximum degree of attenuation occurs at a setting of 1.00. Adjust this for the best balance of the sound quality vs. low frequency artifacts.
Wind Level Bar Graph: This indicator shows the dynamic activity of the wind noise filter. The higher the meter graph deflection, the greater is the action of the wind noise filter.
Operation: Bring up the file with wind noise interference. Bring up the Wind Noise Filter. Set the Threshold control to 15.0 (initially). Set the initial Attenuation value to 0.50. Next, adjust the Threshold control upwards or downwards until the Wind Level Bar Graph modulates (deflects). Keep adjusting the Threshold control until you perceive the average deflection to be around the center of the bar graph display. It may occasionally top out or bottom out - - - that is ok. Finally, adjust the Attenuation control for the optimal level of noise reduction and a minimal amount of artifacts.
Note: A Wind Noise Demo file is provided to help you learn how to use this filter. It is called “Wind Noise Filter Demo.mp3”.
High levels of wind can interfere with outdoors audio recordings. Often, audio professionals will apply a fixed High Pass Filter to the recording to reduce this annoyance. But, this approach also damages the good audio that one is trying to capture. The Diamond Cut Wind Noise Filter (speech) is a special IIR based dynamic filter using multiple bands across the lower end of the audio spectrum (ranging from 20 Hz to 500 Hz). It dynamically activates these filters depending on the measured presence of random noise within any of those bands leaving behind the good audio while attenuating the random wind noise. Although this is not a perfect filter, it is very useful in spoken word outdoor situations and can produce a greatly improved result compared to the fixed High Pass Filter approach to the problem.
Wind Noise Filter
Threshold Control: (1.0 to 50.0) Increased aggressive filtering action occurs at lower threshold control settings. The least aggressive setting is 50.0 (all the way up). Adjust this control until the “Wind Level” meter is fluctuating in sync with the wind noise, and the wind noise is dynamically being reduced by the filter.
Attenuation Control: (0.01 to 1.00) This slider control allows you to set the amount of attenuation provided by the Wind Noise Filter. The maximum degree of attenuation occurs at a setting of 1.00. Adjust this for the best balance of the sound quality vs. low frequency artifacts.
Wind Level Bar Graph: This indicator shows the dynamic activity of the wind noise filter. The higher the meter graph deflection, the greater is the action of the wind noise filter.
Operation: Bring up the file with wind noise interference. Bring up the Wind Noise Filter. Set the Threshold control to 15.0 (initially). Set the initial Attenuation value to 0.50. Next, adjust the Threshold control upwards or downwards until the Wind Level Bar Graph modulates (deflects). Keep adjusting the Threshold control until you perceive the average deflection to be around the center of the bar graph display. It may occasionally top out or bottom out - - - that is ok. Finally, adjust the Attenuation control for the optimal level of noise reduction and a minimal amount of artifacts.
Note: A Wind Noise Demo file is provided to help you learn how to use this filter. It is called “Wind Noise Filter Demo.mp3”.