Audio to M4A Backup

Audio to M4A Backup is a tool to convert and mix all kinds of sound files into one large WAV file. Audio to M4A Backup can configure volume, start time and playback speed of each sound track. It can extract sound track from many audio formats such as WAV, MP3, WMA, AC3, OGG, MPA, MP2, AU, AIF, SND, and video formats VCD, MPEG, AVI, WMV, ASF, OGM, DIVX, DAT, SVCD. The mixing speed is extremely fast and the output wav file has CD quality (44100Hz, 16Bits, Stereo). Supported file formats WAV, MP3 (with external encoder), WMA (export only), AU, RAW and SND.Transform operations: Reverse, invert, move-up/down, move-forward/backward, inter-change channels, channel mix etc.Special Effects: Equalizer, Band Pass/Stop Filter, Noise Reduction, Echo, Reverb, Modulate, Stretch/Shrink, Change Speed.