I think, once you've spent some time getting to know the interfacing between your computer, its audio device and Audition's settings, you might be very pleasantly surprised. The Scarlett 2i2 (like most other similar devices) allows me to record to and play from Audition, and it also plays all audio generated by my computer (apart from Audition) because I have that device selected (in my computer's preferences) as the default audio input and output device. In my case, the line outputs are connected to a pair of amplified speakers. It has two mic/line inputs, a USB jack (to connect to the computer) and a pair of line outputs. I'm not exactly sure what you mean by "play and record on the same device," but my computer's audio interface is the Focusrite Scarlett 2i2. Not only will it teach you any basics you may not yet know, it will also show you the various features that will make your work easier and save a bunch of time (and you'll have less frustration). The same waveform with the DC offset removed using Adobe Audition.You would really do yourself a big favor by getting hold of the user manual (also called a guide or reference) for the version of Audition you now have. (It’s worth noting that speech naturally has a slightly asymmetrical waveform, and this shouldn’t be confused with the very unnatural DC offset!) The second screenshot (below) shows the result of the DC Bias Adjust process. The first screenshot (above) shows a recording of speech with a similar amount of DC offset to your whalesong: you can clearly see how the signal climbs away from the centre line during the fade in and falls back to it during the fade out. I’ve simulated what you describe in Adobe Audition. When the process completes the waveform should sit exactly on the red line, with the DC offset ‘magically’ removed. Make sure the amount is set to 0% and hit Apply. Deselect the two Normalise tick boxes (unless you also want to normalise the waveform amplitude) and select the DC Bias Adjust tick box. line hum These can be fixed using the Adaptive Noise Reduction effect and. In Adobe Audition, load the file in the waveform editor and select: Effects / Amplitude & Compression / Normalise (process). AuditionHow To Remove Background Noise From Audio In Adobe Audition You re. Correcting a DC offset is usually fairly simple and most DAWs or audio editors have the necessary tools. More critically, it will definitely also result in very nasty clicks if you edit the offset material into more normal audio, so it’s a very good idea to correct it. That said, it could potentially result in asymmetrical clipping or confuse the heck out of some dynamics processors. The good news is that a DC offset won’t normally affect the sound of the audio file per se. A DC offset won’t normally affect the sound of the audio file per se, but it could potentially result in asymmetrical clipping or confuse dynamics processors. DC offsets used to be a common problem of A‑D converters, but it’s an extremely rare occurrence these days. SOS Technical Editor Hugh Robjohns: It seems the waveform is suffering from an enormous DC offset which is almost certainly present in the original whalesong source track (possibly as a result of it being generated by scientific software which stored the audio data as numbers that only go positive, rather than symmetrically in the normal audio convention). Can you suggest the cause and how to correctly centre the track please? This is activated via the RDECaster Pro’s ‘Advanced’ settings. The problem appears to be caused by a single track of whalesong: the waveform’s centre appears to have been displaced above the usual zero line. Multitrack mode (called ‘multi-channel’ mode on the RDECaster) allows you to record not only the stereo mix of your podcast (as was previously the case with the RDECaster) but also each individual track, allowing you to mix and edit your podcast in post-production. The waveform of an audio file looks bizarre when I load it in Adobe Audition, with a curious displacement of the audio on each channel. Note how the waveform ‘climbs’ away from the centre during the fade in and falls back down again during the fade out. A waveform of a recording featuring a DC offset.
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