How to improve quality Mp3, FLAC and Wav files
1. Reduce Mp3, Wav and FLAC file size
Ways of processing Mp3, FLAC and Wav files can be divided into 2 sorts: distorting and not distorting. And if distorting ways of processing change an original relation and level of amplitudes and frequencies of a sound whereas not distorting ways of processing change level of all amplitudes equally or leave invariable level of all amplitudes and frequencies of a sound.
The most widespread distorting way of processing is а equalizer, and the most widespread not distorting way of processing is а normalizer.
We will consider a normalizer in given article.
Gist of a normalization consists that an amplitude of initial beep varies, and a form remains former.
And it will feel on hearing as change of force a sound or volume.
Change of volume is accompanied by change of dynamic range that is relations of the loudest value to the most silent value of beep.
Increase of a volume leads to increase a dynamic range.
Contraction and reduction of a dynamic range is accompanied by music which sounds exactly, monotonously, all time with approximately identical loudness, it becomes boring, inexpressive, more plane, an expression and dynamism disappears, brightness of perception is lost.
Certainly, it is possible to take advantage of a pen or a button of volume and easier to increase volume level, not resorting to a help of a normalizer but if you have many composition it supplies notable inconvenience. Each composition has its a dynamic range and a volume average level.
If all musical compositions are executed in one style or a genre that, as a rule, it is possible will be limited to peak normalization. Peak normalization for group of compositions fixes for each composition a dynamic range at one level thus that all compositions have a same dynamic range.
If all musical compositions are executed in different style or a genre that, as a rule, resort to normalization on an average level. Normalization on an average level for group of compositions fixes a dynamic range at different level for each composition depending on average value of volume of this composition that creates sensation of identical volume at transition from one composition to another for all group of compositions.
Let's consider normalization of a sound with reference to program Sound Normalizer.
Sound Normalizer differs from other sound editors of type "Sound Forge" which, fulfilling normalization of files Mp3, at first convert this Mp3 file in Wav file, then normalize this Wav file, and then already back convert this file Wav in Mp3 file. Sound Normalizer fulfills normalization of files Mp3 without conversions or convertings and thus simply changes a control footing in each frame of Mp3 file.
Sound Normalizer differs from other players of type "foobar 2000" which, fulfilling normalization of files Mp3 use for this purpose APEv2 tags leaving thus each frame of file Mp3 not touched. Sound Normalizer does not use APEv2 tags for normalization that does possible listening Mp3 files in hardware players with flash memory. Besides Sound Normalizer fulfills testing and normalization on each channel separately that allows to align automatically at normalization volume level in each channel on identical level that improve a stereo effect.
Download the Sound Normalizer: SoundNormalizer.exe
You need to open a file prior to a beginning of normalization.
The program has 2 modes: single and batch.
You can open a file in a single mode having executed a command "Open".
You can go in the batch mode having executed a command ”Batch Processor”.
You can open files in the Batch Processor using three ways:
- If You execute a command “Add Files” that can select Mp3, FLAC or Wav a file or files;
- If You execute a command “Add Folder” that can select all Mp3, FLAC or Wav the files which are in this folder;
- If You execute a command “Add Folders” that can select all Mp3, FLAC or Wav the files which are in this folder and all subfolder being in this folder.
The program has for Mp3 files normalization on an average level with definition of clipping. As level of a sound for Mp3 files is near to peak level or exceeds that one peak normalization for Mp3 files it appears not expedient.
Combination of a normalization on an average level with a peak normalization preventing a clipping will be a optimal variant.
Clipping is a distortion of beep expressing in appearance of "hissing" and "cod".
Clipping appears in Mp3 file when Wav file with peak level above 90 % is converting, therefore before converting Wav file in Mp3 carry out peak normalisation Wav file with level no more than 90%.
Please, look and listen the same beep without clipping and with clipping.