Wave to MP3 for Nokia or Samsung

[SingSing]

I would like to find our what is the best tool and setting to encode wav to mp3 for Cel phone ?

Note : I was using CDex but I can't find a way to low the volume of the music.

[mats.hogberg]

Edit your wavs in GoldWave or Audacity (to the volume you want). Then encode to mp3 with CDEx or other mp3 encoder.

/Mats

[SingSing]

I found out Samsung and many cellphone use AMR (Adaptive Multi-Rate) files for ringtone and music. It is a mono sound file. So the first step is to use CDex and windows MP3 codec to convert a CD wave file to 20kb/s 11KHz mono sound file.

Then use milksoft's free mobile AMR converter to convert the MONO wave file to amr file at MR=~10kb/s, then E-mail that to the cell phone, receive, save and play.

I think this is also the same approach to convert sound/music to ringtone.

Note : I am working on the Nokia later.

[SingSing]

Hmm, I find out quicktime can plays amr files, but how do I set the quicktime player to loop, like MS media player ?

[jman98]

I found out Samsung and many cellphone use AMR (Adaptive Multi-Rate) files for ringtone and music. It is a mono sound file. So the first step is to use CDex and windows MP3 codec to convert a CD wave file to 20kb/s 11KHz mono sound file.

Why 11KHz? I certainly hope you understand that using 11KHz audio does NOT result in a file 1/4th the size of one that uses 44KHz. File size has nothing to do with sampling frequency. File size depends on bit rate.

[mats.hogberg]

I think the AMR specs dictates 8 kHz, actually... At least the ever poular milksoft wav to AMR utility wants 8 kHz...

/Mats

[jman98]

Interesting. Thanks Mats. The only reason I asked is that some people do think that if they lower the sampling rate, they get a smaller file.

[mats.hogberg]

people do think that if they lower the sampling rate, they get a smaller file.

True. Just as a lower video resolution automatically results in a smaller file. Actually not all that bad thinking, but - wrong.

/Mats

[SingSing]

The amr converter indeed produced a 8KHz sampled sound, According to quicktime player.

MR ratio on the converter means data rate, and I convert the same ring tone to MR of 4.75 and 12.2, and the resulted file size is about the same as their MR ratio. So, in this case, a lower MR ( Data rate) does produce a smaller file.

I will try a few music files and see whether this hold true or not.

Note: The poor cell phone is now a phone/clock/alarm/contact list/radio/camera/music-video-picture player. I really want one that make pop corn!