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  How To Improve Recordings of Speech

Clean up noisy audio with RipEditBurn Plus, Record Cleaner, and the Noise Reduction Effect,
on sale for only $99.95 — save nearly $50

Have you ever wanted to improve the quality of a recording of a speech or talk? Maybe there was some noise, or a hum, or maybe the recording equipment was less than perfect. It happens often, and, fortunately, Blaze Audio offers some excellent tools for improving the quality of speech recordings.

The main tool is RipEditBurn Plus, which is a powerful, easy to use editor. However, to get really good results on speech, use two add-on programs- Record Cleaner and Noise Reduction Effect. Make sure you work from a copy of the original file so that you can always go back to the original.

Sometimes there is a cough or other noise during a period of silence. If it is short you can just remove it. If the noise is longer, but does not occur when speech is happening, use the RipEditburn Plus Mute control. Select the area of the file that has the noise, click on Edit->Mute, and then on OK in the dialog box that comes up, and presto- silence!

RipEditBurn Plus Mute

Sometimes the noise happens during the speech that you want to preserve and enhance, and that's where the Noise Reduction Effect proves its mettle. First, find and select a small section of noise that does not include speech. People put very small pauses into their speeches, so this is usually pretty easy. Click on Effects->Noise Reduction and then, in the portion of the dialog box labeled Phase 1, click on Calculate Noise Profile. That creates a pattern which can then be used to eliminate the noise from the recording.

Next, select the entire portion of the audio file where the noise is, and click on Effects->Noise Reduction again. This time use Phase 2 in the dialog box. Most of the time it's worth starting with the Noise Reduction Level at 1 and then clicking on Remove Noise. Listen to the result, and, if you need to remove more noise, undo your edit, select the same section again, and try it at a higher level. This effect, if used too much, can add distortion, so be careful with it.

Noise Reduction Effect

Sometimes, no matter how well you have set up the recording equipment, there may be a 60 cycle hum (50 cycle in Europe and many Asian countries) that comes from the power supply. If you hear a low pitched hum that persists through all of the recording, don't worry, there's a way to fix it. Click on Tools->Record Cleaner, and then click on Eliminate Hum Settings at the top of the dialog box. Choose whether it is 60 Cycle or 50 Cycle, and then set the More/Less slider at the upper right of the dialog box to set the level. Make sure you click on Eliminate Hum at the bottom left. As always, start with fairly low levels, and if the result is good, keep it. If not quite enough has been taken out, undo your edit, and move the slider up a bit.

Record Cleaner Hum

If you aren't sure what the alternating current frequency is in your location, you can go here to find out:

If there is a high pitched noise, use Tools->Record Cleaner->Remove Hiss. Set the level of the slider, preferably low the first time. Make sure you click on Eliminate Hiss at the bottom left. If you need to remove more hiss, undo the change, and then do it again with the slider at a higher level.

Record Cleaner Hiss

Sometimes there are pops and clicks- very short (and sometimes loud) noises that happen so often it would take too much time to go through and edit each of them out. That's what Tools->Record Cleaner->Remove Pops and Clicks will help you with. Try different levels on the slider, you want to get rid of as much of the pops and clicks as you can, but you don't want to remove the words or make them so they are hard to hear. Make sure you click on Remove Pops and Clicks at the bottom left of the dialog box.

Record Cleaner Remove Pops and Clicks

To remove a stubborn pop or click click on the link to visit that tutorial .

There are many other options. You may need to boost the audio level for the speech. Go to Effects->Amplify to do it. Noise Gate is a filter that measures the level of each frequency within the sound and reduces the ones that are likely to be noise. There are two different noise gates in RipEditBurn Plus with Record Cleaner, so you may want to experiment with Effects->Noise Gate or Tools->Noise Gate. Effects-Note Scrubber can be used to remove a particular frequency. Effects->Sound Warmer produces a sound that many people consider warmer and more reverberant.

RipEditBurn Plus Sound Warmer

Again, make sure you work from a copy of the original file so that you can always go back to the original.

Click to buy RipEditBurnPlus, Record Cleaner, and the Noise Reduction Effect now.