So for example, if you have a floating-point format that goes over 0dB and you play it at full-volume, your digital-to-analog converter will clip.ĭue to the "lossy" nature of MP3, when you encode to MP3 the wave-shape changes and some peaks will be higher and others will be lower. Your analog-to-digital converter and digital-to-analog converter are also limited to 0dB. With more bits you get bigger numbers, but the maximum is still "calibrated" to 0dB and your driver & digital-to-analog converter (or analog-to-digital converter) make the adjustment so that 0dB is equally loud, no matter how many bits you have.ĬDs and "regular" (integer) WAV files are limited to 0dB. With 16-bits, those numbers represent 0dB and you simply cannot go any higher.
* You don't need to know this, but for example, with 16-bits you can "count" from -32,768 to +32,767. If you are trying to match the volumes of all of your music, let us know. Most commercial CDs and MP3s are already maximized/normalized (even the quiet-sounding songs), so you usually can't boost the volume without clipping. So, you often have to decrease the loud-sounding track, rather than boost the quiet-sounding track. Volume matching is tricky because a quiet-sounding track can have maximized peaks. You can do the same "trick" with Match Volume to check the average level (more related to "loudness"), and then cancel if you wish. Sometimes I'll start Maximize just to check the peak, and then I'll cancel. If you "blindly" increase the volume, you can go over 0dB (and you can get clipping when you save).
Usually, when I'm done with my editing/processing, I'll run Maximize as the last step before saving to make sure I'm not clipping. If your file goes over 0dB, Maximizing will actually bring the peaks down to 0dB. (You also get clipping in analog if you try to get 110 Watts out of a 100 Watt amplifier.) But, if you save a file that goes over 0dB, you can get clipping (distorted flat-topped waves). GoldWave uses floating point internally (like most audio editors) so it can "temporarily" go over 0dB. Then it sets the volume change to whatever is required to hit exactly 0dB.įYI - In audio terminology, most people say "Normalize" instead of "Maximize". Maximize Volume scans the file first to find the current peak.
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