Dec 22, 2019

Remove Echo from Audio

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←Older revision Revision as of 00:56, 23 December 2019
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This wikiHow teaches you how to remove an echo from an audio file using Audacity, a free audio editor for Windows and Mac.  When recording audio, sometimes the room you record in creates an echo or background noise. Most audio editors, such as Adobe Audition, have similar tools that can reduce echoes and background noise. These methods are most effective when used on a track with a single voice or instrument.  Complex tracks with multiple voices or instruments will make it harder to isolate the background noise and remove it.
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This wikiHow teaches you how to remove an echo from an audio file using Audacity, a free audio editor for Windows and macOS. Most audio editors, such as Adobe Audition, have similar tools that can reduce echoes and background noise. These methods are most effective when used on a track with a single voice or instrument, as multiple voices and instruments make it harder to isolate the background noise.
 
[[Category:Audio]]
 
[[Category:Audio]]
   
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#Open the audio file.  Audacity supports most audio formats, such as mp3, wav, aiff, flac, ogg, and ffmpeg.  To open an audio file:[[Image:Remove Echo from Audio Step 2.jpg|center]]
 
#Open the audio file.  Audacity supports most audio formats, such as mp3, wav, aiff, flac, ogg, and ffmpeg.  To open an audio file:[[Image:Remove Echo from Audio Step 2.jpg|center]]
 
#*Click '''File'''
 
#*Click '''File'''
#*Click '''Open'''
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#*Click '''Open''
#*Browse and select audio file.   
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#*Browse to and select the audio file.   
#Get a noise profile. The noise profile can be used to reduce excess noise using Noise Reduction. Use the following steps to get a noise profile:   
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#Get a noise profile. The noise profile is used to reduce excess noise using Noise Reduction. Use the following steps to get a noise profile:   
#*Click and drag to highlight a section of the audio that has an example of the noise you want to reduce.  This could be the echo at the echo at the end of a spoken word or similar.   
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#*Click and drag to highlight a section of the audio that has an example of the noise you want to reduce.  This could be the echo at the end of a spoken word or similar.   
 
#*Click '''Effects''' in the menu bar at the top.   
 
#*Click '''Effects''' in the menu bar at the top.   
 
#*Click '''Noise Reduction'''.   
 
#*Click '''Noise Reduction'''.   
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#*Drag the slider next to "Noise reduction (dB)" to increase the effect.   
 
#*Drag the slider next to "Noise reduction (dB)" to increase the effect.   
 
#*Click '''Ok''' when satisfied with how the audio sounds.   
 
#*Click '''Ok''' when satisfied with how the audio sounds.   
#Apply Amplify.  Since Noise Reduction makes the audio quieter, you can apply amplify to bring the volume back up.  Don't apply too much amplification, or the audio will sound distorted.  Use the following steps to apply Amplify:[[Image:Remove Echo from Audio Step 4.jpg|center]]
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#Apply Amplify.  Since Noise Reduction makes the audio quieter, you can apply the Amplify effect to bring the volume back up.  Don't apply too much amplification or the audio will sound distorted.  Use the following steps to apply Amplify:[[Image:Remove Echo from Audio Step 4.jpg|center]]
 
#*Double-click to select the entire audio waveform.   
 
#*Double-click to select the entire audio waveform.   
 
#*Click '''Effects''' in the menu bar at the top.   
 
#*Click '''Effects''' in the menu bar at the top.   
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#*Click '''Preview''' to hear the audio with the effect.   
 
#*Click '''Preview''' to hear the audio with the effect.   
 
#*Click '''Ok''' if satisfied with how the audio sounds to apply Amplify.   
 
#*Click '''Ok''' if satisfied with how the audio sounds to apply Amplify.   
#Apply Compressor.  Compressor reduces the amount of distance between the wave peaks and lows.   Apply Compressor as needed throughout this process. Use the following steps to apply a Compressor effect:[[Image:Remove Echo from Audio Step 5.jpg|center]]
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#Apply Compressor.  The Compressor effect reduces the amount of distance between the wave peaks and lows. Apply Compressor as needed throughout this process. Use the following steps to apply the effect:[[Image:Remove Echo from Audio Step 5.jpg|center]]
 
#*Click '''Effects'''.  
 
#*Click '''Effects'''.  
 
#*Click '''Compressor'''.   
 
#*Click '''Compressor'''.   
 
#*Drag the slider bar next to "Ratio" so that the line in the graph at the top drops slightly below it's the default position.  You can also reduce the floor noise and threshold. 0
 
#*Drag the slider bar next to "Ratio" so that the line in the graph at the top drops slightly below it's the default position.  You can also reduce the floor noise and threshold. 0
 
#* Click '''Preview''' to hear what it sounds like.  When you are satisfied with how it sounds, #*Click '''Ok''' to apply the effect when satisfied with the review.
 
#* Click '''Preview''' to hear what it sounds like.  When you are satisfied with how it sounds, #*Click '''Ok''' to apply the effect when satisfied with the review.
#Apply a Low Pass or High Pass Filter.  Depending on how your audio sounds, you may need to apply a low or high pass filter.  If it sounds high pitched with a lot of hisses, apply a low pass filter.  If it sounds low and muffled, apply a high pass filter. [[Image:Remove Echo from Audio Step 6.jpg|center]]
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#Apply a Low Pass or High Pass Filter.  Depending on how your audio sounds, you may need to apply a low or high pass filter.  If it sounds high pitched with a lot of hisses, apply a low pass filter.  If it sounds low and muffled, apply a high pass filter.[[Image:Remove Echo from Audio Step 6.jpg|center]]
 
#*Click '''Effects''' menu.   
 
#*Click '''Effects''' menu.   
 
#*Click '''Low-Pass Filter''' or '''High-Pass Filter'''.
 
#*Click '''Low-Pass Filter''' or '''High-Pass Filter'''.


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