search for: wavdiff

using iTunes i've noticed that AAC is very good at re-encoding own lossy sound. let's test Opus! neroaacenc.exe -q 0.75 -if 000.wav -of 001.m4a neroaacdec.exe -if 001.m4a -of aac001.wav wavdiff.exe 000.wav aac001.wav Comparing 000.wav - aac001.wav... Max diff: -17.3867dB RMS diff: -33.0851dB Mean diff: -32.4582dB opusenc.exe --bitrate 512 "000.wav" 001.opus opusdec.exe 001.opus opus001.wav wavdiff 000.wav opus001.wav Comparing 000.wav - opus001.wav... Max diff: -22.5646dB RMS d...

...ran a test against MP3 format. Code: (first convert tested audio file to 16 bit 48khz with sox.exe if needed) lame.exe -b 320 48khzfilein.wav -o fileout.mp3 lame --decode fileout.mp3 -o fileout.mp3.wav opusenc.exe --bitrate 320 48khzfilein.wav fileout.opus opusdec.exe fileout.opus fileout.opus.wav wavdiff.exe 48khzfilein.wav fileout.mp3.wav -diff fileout.mp3.delta.wav wavdiff.exe 48khzfilein.wav fileout.opus.wav -diff fileout.opus.delta.wav Results: (compare two deltas with spek.exe - i've attached graphic file from my test) MP3 much better at 0-4 kHz, Opus little better at 12-20 kHz. Plus I th...

...8 PM, encrupted anonymous < sergeinakamoto at gmail.com> wrote: > using iTunes i've noticed that AAC is > very good at re-encoding own lossy sound. > let's test Opus! > > neroaacenc.exe -q 0.75 -if 000.wav -of 001.m4a > neroaacdec.exe -if 001.m4a -of aac001.wav > wavdiff.exe 000.wav aac001.wav > Comparing 000.wav - aac001.wav... > Max diff: -17.3867dB > RMS diff: -33.0851dB > Mean diff: -32.4582dB > > opusenc.exe --bitrate 512 "000.wav" 001.opus > opusdec.exe 001.opus opus001.wav > wavdiff 000.wav opus001.wav > Comparing 000.wav...

...ran a test against MP3 format. Code: (first convert tested audio file to 16 bit 48khz with sox.exe if needed) lame.exe -b 320 48khzfilein.wav -o fileout.mp3 lame --decode fileout.mp3 -o fileout.mp3.wav opusenc.exe --bitrate 320 48khzfilein.wav fileout.opus opusdec.exe fileout.opus fileout.opus.wav wavdiff.exe 48khzfilein.wav fileout.mp3.wav -diff fileout.mp3.delta.wav wavdiff.exe 48khzfilein.wav fileout.opus.wav -diff fileout.opus.delta.wav Results: (compare two deltas with spek.exe - i've attached graphic file from my test) MP3 much better at 0-4 kHz, Opus little better at 12-20 kHz. Plus I th...

...; Code: (first convert tested audio file to 16 bit 48khz with sox.exe if > needed) > lame.exe -b 320 48khzfilein.wav -o fileout.mp3 > lame --decode fileout.mp3 -o fileout.mp3.wav > opusenc.exe --bitrate 320 48khzfilein.wav fileout.opus > opusdec.exe fileout.opus fileout.opus.wav > wavdiff.exe 48khzfilein.wav fileout.mp3.wav -diff fileout.mp3.delta.wav > wavdiff.exe 48khzfilein.wav fileout.opus.wav -diff fileout.opus.delta.wav > > Results: (compare two deltas with spek.exe - i've attached graphic file > from my test) > MP3 much better at 0-4 kHz, Opus little bette...

...it 48khz with sox.exe if >>> needed) >>> lame.exe -b 320 48khzfilein.wav -o fileout.mp3 >>> lame --decode fileout.mp3 -o fileout.mp3.wav >>> opusenc.exe --bitrate 320 48khzfilein.wav fileout.opus >>> opusdec.exe fileout.opus fileout.opus.wav >>> wavdiff.exe 48khzfilein.wav fileout.mp3.wav -diff fileout.mp3.delta.wav >>> wavdiff.exe 48khzfilein.wav fileout.opus.wav -diff fileout.opus.delta.wav >>> >>> Results: (compare two deltas with spek.exe - i've attached graphic file >>> from my test) >>> MP3 mu...

...it 48khz with sox.exe if >>> needed) >>> lame.exe -b 320 48khzfilein.wav -o fileout.mp3 >>> lame --decode fileout.mp3 -o fileout.mp3.wav >>> opusenc.exe --bitrate 320 48khzfilein.wav fileout.opus >>> opusdec.exe fileout.opus fileout.opus.wav >>> wavdiff.exe 48khzfilein.wav fileout.mp3.wav -diff fileout.mp3.delta.wav >>> wavdiff.exe 48khzfilein.wav fileout.opus.wav -diff fileout.opus.delta.wav >>> >>> Results: (compare two deltas with spek.exe - i've attached graphic file >>> from my test) >>> MP3 mu...