Dec 20, 2019

Remove Echo from Audio

←Older revision Revision as of 00:29, 21 December 2019
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#*Click '''Open'''
 
#*Click '''Open'''
 
#*Browse and select audio file.   
 
#*Browse and select audio file.   
#Apply Noise Reduction.  To apply noise reduction, highlight the entire audio waveform by pressing on PC, or on Mac. Then click "Effects" in the menu bar at the top, and select "Noise Reduction"Increase the noise reduction (dB) slider by dragging it to the leftThis reduces echo and other background noisesClick "Preview" in the lower-left corner to hear what it sounds likeWhen you are satisfied that enough of the echo has been cut out, click "Ok" to apply the effect.[[Image:Remove Echo from Audio Step 3.jpg|center]]
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#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: 
#*This will reduce the volume and alter the pitch of the audio
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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 echo at the end of a spoken word or similar.
#Apply Amplify.  Amplify increases the volume of the audio.  It's at the top of the list of effects in the Effects menu at the top of Audacity.  Drag the amplification slider bar to the left to increase the volume as neededDo not increase the volume too much or it will sound distorted.  Click "Preview" to hear what it sounds like. When you are satisfied with how the volume sounds, click "Ok" to apply the effect.  Reapply Amplify as needed throughout this process.[[Image:Remove Echo from Audio Step 4.jpg|center]]
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#*Click '''Effects''' in the menu bar at the top
#Apply Compressor.  Compressor reduces the amount of distance between the wave peaks and lows. To apply compressor, click "Effects, and then click "Compressor" drag the slider bar next to "Ratio" so that the line in the graph at the top drops slightly below it's default position.  You can also reduce the floor noise and threshold. Click "Preview" to hear what it sounds like.  When you are satisfied with how it sounds, click "Ok" to apply the effect.  This will reduce the volume. Apply Compressor as needed throughout this process.[[Image:Remove Echo from Audio Step 5.jpg|center]]
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#*Click '''Noise Reduction'''. 
#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. Both effects are found in the Effects menu.  Use the pull-down menu to select the Rolloff (dB per octave) range.  Your options are between 6 dB to 48 dB.  Click "Preview" to hear what it sounds like, and click "Ok" to apply the effect.[[Image:Remove Echo from Audio Step 6.jpg|center]]
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#*Click '''Get Noise Profile'''.   
#Apply Graphic EQ.  To apply Graphic EQ, select Equalization in the Effects menu. Click on the Graphic radial button next to "EQ type" below the graph on the left side. Use the slider bars at the bottom to adjust the EQ.  The bars on the left affect the low tones while the bars on the right effect the higher tones, and the bars in the middle effect the mid-tones.  Click "Preview" to hear what it sounds like, and click "Ok" to apply the effect.[[Image:Remove Echo from Audio Step 7.jpg|center]]
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#*Click '''Cancel''' to close the window.   
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#Apply Noise ReductionNoise Reduction uses the noise profile you just captured to reduce excess noise in the audioUse the following steps to apply Noise Reduction:[[Image:Remove Echo from Audio Step 3.jpg|center]]
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#*Double-click to select the entire audio waveform. 
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#*Click '''Effects''' in the menu bar at the top.   
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#*Click '''Noise Reduction'''. 
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#*Click '''Preview''' to preview the effect. 
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#*Drag the slider next to "Noise reduction (dB)" to increase the effect. 
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#*Click '''Ok''' when satisfied with how the audio sounds. 
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#Apply AmplifySince 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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#*Double-click to select the entire audio waveform. 
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#*Click '''Effects''' in the menu bar at the top. 
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#*Drag the slider below "Amplification (dB)" to the right. 
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#*Check '''Allow Clipping'''
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#*Click '''Preview''' to hear the audio with the effect. 
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#*Click '''Ok''' if satisfied with how the audio sounds to apply Amplify. 
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#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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#*Click '''Effects'''.
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#*Click '''Compressor'''.  
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#*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
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#* 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.
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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]]
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#*Click '''Effects''' menu.   
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#*Click '''Low-Pass Filter''' or '''High-Pass Filter'''.
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#*Use the pull-down menu to select the Rolloff (dB per octave) range.  Your options are between 6 dB to 48 dB.   
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#*Click '''Preview''' to hear the audio with the effect. 
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#*Click "Ok" to apply the effect when satisfied with how the preview sounds.
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#Apply Graphic EQ. Graphic EQ (often referred to as Equalizer) is used to shape the overall tone of an audio file. Use the following steps to apply Graphic EQ:[[Image:Remove Echo from Audio Step 7.jpg|center]]
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#*Click '''Effects'''.
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#*Click Graphic EQ'''.
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#*Use the slider bars at the bottom to adjust the EQ.  The bars on the left affect the low tones while the bars on the right effect the higher tones, and the bars in the middle effect the mid-tones.   
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#*Click '''Preview''' to hear the audio with the EQ.,  
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#*Click '''Ok''' to apply the effect when you are satisfied with how the preview sounds.
 
#Export the audio file.  Once you are satisfied with how the audio file sounds, you can export it so that it can be played in your media player.  To export the audio file:[[Image:Remove Echo from Audio Step 8.jpg|center]]
 
#Export the audio file.  Once you are satisfied with how the audio file sounds, you can export it so that it can be played in your media player.  To export the audio file:[[Image:Remove Echo from Audio Step 8.jpg|center]]
 
#*Click '''File''' in the menu bar at the top.   
 
#*Click '''File''' in the menu bar at the top.   


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