![]() Then try converting to those settings (and yes, do enable Professional Frequency Conversion). So first, figure out what your player supports. It may not necessarily recognize files with a 16000 khz frequency, or files at whatever bitrate you are converting to, or mono files, or variable bitrate files (if you are using a vbr setting). Find out what frequencies and bitrates and etc. Check out the documentation you have for your mp3 player (or look it up if you don't have a manual that is helpful on this subject). I think the capabilities of your mp3 player are likely to be at the root of your problem. I've spent some time in contemplation of this problem while washing dishes. On the other hand, if it sounds ok on your computer you could try converting the files to wav and then to mp3 by recording them through the sound card using dMC Auxilary Input. Your problems may lie with your original source files, however, since the quality of the original material was probably not that great. You can download the dMC release 11 beta from the Betas section of this forum. The new decoder is supposed to be an improvement in reading atypical mpeg files. I am using the dMC release 11 beta which uses a new and different mp3 decoder and you may want to consider trying this. It may be that a different mp3 codec might work better. You may want to check the file tag for your source files. SHOULD the advice there not work then go ahead and consider the following: Without professional frequency conversion the results were not pretty but with professional frequency conversion the results were listenable.īEFORE TRYING ANYTHING HERE, PLEASE CHECK MY NEXT POST BELOW. I then converted this to a 128 kbs joint stereo mp3 file at 16000 khz and at 44,100 khz frequencies. To test out your problem I have created a mono mp3 file at 40 kbs and a frequency of 8,000 khz. So my take on this is that it is likely not because of something you do wrong during the conversion, but because of the inherent drawbacks of manipulating an mp3 low bit rate audio file. ![]() For the afore-mentioned reason, though, it is in fact going to degrade quality no matter what you convert it to. Secondly, you can't invent the data that was lost when it was recorded in the original mp3 low bit rate, so converting it to a higher bit rate is definitely not going to improve quality (I know you are not claiming that and you only want to do it for compatibility with your mp3 player, but it is a point worth making). The problem is, every time I convert it, the quality is horrible and I can barely understand what anyone is saying on the conference call.Īny idea on how I can fix this issue?This is likely because mp3 is a lossy compression, and converting from that to anything esle, including exactly the same format and bit rate or higher bit rate, results in a worse copy of it. So try convertiong some sample tracks to different settings and see what you find best for your use and your ears and your music.I have telephone conference calls on MP3 format and I need to convert to a higher frequency in order to load it onto my MP3 player. Popular settings are 128 kbs cbr, 160 kbs cbr, 192 kbs cbr, alt-preset standard (a vbr setting around 160 kbs, I believe), alt-preset extreme (already explained), and alt-preset insane. I find that most users are content somewhere between 128 kbs cbr, and 320 kbs cbr. If I make an mp3 disk for my car cd/mp3 player, I will use 192 kbs cbr (which is probably a little bit of overkill-I suspect 160 kbs would do as well). For example, if I want to convert to mp3 for use on my computer and stereo, I have found that I cannot distinguish differences beyond alt-preset-extreme (which is a variable bitrate setting around 220-240 kbs-this is my rough estimate). So looked at flexibly, you might want to spend some time comparing different bitrate settings and looking at different uses. It will vary depending on the music you are listening to, your listening environment, your audio equipment, your state of mind, and your own hearing abilities. Theoretically, there is a bitrate setting at which your mp3 file (or any other file in a lossy format) will not sound any different from your source. This also results in the largest file size. The highest quality available through mp3 would be alt-preset insane or 320 kbs cbr (for constant bitrate). ![]() Mp3 is lossy which means that it does NOT retain all of the audio quality (or audio information) of the original source. FLAC is lossless which means that it retains all of the audio quality (or audio information) that was in the original source.
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