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Questions tagged [mp3]

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40
votes
13answers
40k views

Are there any audible differences between 192 and 320 kbit/s .mp3 files?

I have friends that are very picky when it comes to mp3 bit-rate, and will always look for the 320 kbit/s version of a file. However, I have never noticed any differences, they sound the same to me. I ...
11
votes
4answers
2k views

Is there a losslessly compressed audio file?

Anyone who works with audio either as a hobby or as a professional knows about MP3 and WAV, and the advantages and disadvantages of each. Namely: MP3 (most commonly MPEG III) disadvantage: lossy ...
9
votes
2answers
2k views

How do mp3 encoders compress audio?

I know they remove certain sounds, like extreme highs and lows, but how does this really work? What information is decided to be thrown out? Is it just done by frequency and typical human hearing ...
7
votes
3answers
14k views

How to convert a stereo MP3 to mono MP3

We had an MP3 created for a message greeting on our phone system. It is stereo MP3, not sure what the bit rate is, but is sampled at 44.1k. Our sound system requires it to be in this format: 16 bit ...
6
votes
2answers
51 views

In what ways does mp4 improve on mp3?

I know mp4 is supposed to have 'higher sound quality at a lower file size', but: how does it do this? How does it compress more information into a smaller space? How much of mp3 is still used? Was ...
6
votes
5answers
9k views

Is it possible to loop MP3 without gaps? [duplicate]

Any sound editor adds little gap on the beginning and on the end of sound loop when I convert it to mp3. Deleting gap is useless, after reload it’s still there… Is there any way to solve this?
6
votes
1answer
442 views

Audio tweaks pre-encoding for high quality MP3 output

I run an internet radio station. We encode our audio into MP3 at 128kbit, joint-stereo 44.1kHz, with LAME. Obviously there are limits to the quality that can be achieved with this bandwidth... that'...
5
votes
7answers
51k views

Is it possible to separate voices from one mp3 file?

I want to separate 2 or more voices from one audio file, is there any software to this ? I have done some googling and seen that the answer is NO in most cases. But I think at least there should be ...
5
votes
8answers
4k views

MP3 gapless looping help?

Hi guys, quick query here, Need to make some sounds for a client loop seamlessly in his game. Edited them fine as wav files in Pro Tools so they loop ok, but when saved as mp3 at clients request a ...
5
votes
1answer
948 views

Are compressed audio files converted to raw pcm by audio players?

When audio players (like VLC, for example) play compressed audio files (like mp3, for instance), do they first convert them to pcm data (like in wav files) and then play it? It seems very logical to ...
5
votes
1answer
8k views

How can I detect corrupt/incomplete MP3 files?

I have 1,000 MP3. Some of them went through e-mail, FTP, USB key, etc., which means they might be corrupt or incomplete. How can I check them (without having to test them one by one manually)?
5
votes
4answers
2k views

How to ensure uniform sound levels in multiple WAV files?

I require that the sound levels of all the songs for my project are uniform. The songs are from different albums and different artists, hence they are not uniform from the perspective of volume level. ...
5
votes
1answer
653 views

Does converting mp3 to wav make sense with regard to timing accuracy?

Think about a program where it is mission critical to sync audio playback with text being displayed on the screen. And timing of this sync must be perfect. Currently, I am having all sorts of trouble ...
4
votes
4answers
70 views

What software is best to record stereo and encode mp3

I want to be able to record band practices and then quickly create mp3s and send them out. Fidelity doesn't matter so much, right now I'm using garage band, creating an m4a from garage band and then ...
4
votes
2answers
502 views

FLAC vs MP3 (Lossless vs Lossy)

I tried to compare one file which was flac with mp3 file that was converted from FLAC. I kept comparing these two files and I really had hard time differencing between these two codecs. It was ...
4
votes
2answers
63 views

Is there a utility software to set a default sound output level for a number of MP3 tracks?

Some of the tracks in my MP3 collection have low output sound and this requires that I adjust volume level back and forth every time such a track plays and completes. Is there an application that I ...
4
votes
2answers
7k views

Why do mp3 have sample rate?

So my understanding of mp3 or any lossy file format is that a lossless audio such as wav will be sampled at some rate i.e. 44.1kHz and the mp3 will compress each second of that to a constant rate of ...
4
votes
1answer
295 views

What is this static in front of the audio in MP3?

I understand that MP3 is not recommended for production as it is lossy, but that is irrelevant here. I understand that the MP3 encoding algorithm inserts silence in the first second to pad out the ...
3
votes
4answers
3k views

Best lossy format for music?

Which one of the lossy file formats like Ogg, AAC, Mp3, Wma has the best quality/size ratio? I've seen that AACs are smaller than MP3 at the same bitrates. Do they sound worse than MP3?
3
votes
3answers
2k views

Is source bit depth/sampling rate relevant for mp3 conversion?

Will an MP3 file, encoded from a 16-bit, 44.1 kHz source sound better or worse than an MP3 file, encoded with identical settings, but from a 24-bit, 96 kHz source? Or will there be no audible ...
3
votes
1answer
1k views

Can a MP3 file contain video frames?

I have a file, which is obviously a MP3 file (file extension .mp3, type indicated as "MP3 Format Sound" in Windows Explorer). Surprisingly, when I open the file using Windows Media Player, it will ...
3
votes
2answers
6k views

LAME: Why is a lowpass filter used with --preset insane

After analysing various converted mp3's I've found out that the LAME encoder uses a lowpass filter for the insane preset (CBR 320), but the filter seems to be disabled for the extreme preset (VBR V0). ...
3
votes
1answer
8 views

Mp3 codec reencoding effects

Does encoding a low bit rate (say 128 kbps) Mp3 from a 320 kbps Mp3 produce the same thing as encoding it from the original lossless? Or does the way Mp3 work mean that the losses compound on each ...
3
votes
2answers
95 views

Why are levels so different on popular music tracks I open in my wav editor?

I'm trying to figure out how loud my songs should be. I'm trying to compare my stuff with popular music artists to see how loud their songs are, so I open their songs in my wave editor. When I open ...
3
votes
3answers
38 views

Easiest way to convert audio tape to mp3?

I have a few hundred of audiotapes; I am looking for an easiest way to convert them to mp3; I would like to find a software which would 1) adjust recording level automatically (and do it gradually - ...
3
votes
1answer
139 views

How do I find the common audio between mp3 audio tracks?

I have a folder of nearly identical .MP3s, but each with a different voiceover mixed in. I'm trying to dump the tracks without the voiceovers. I've tried aligning two of them to the nearest sample, ...
3
votes
2answers
3k views

Audacity: Increase audio volume in audacity software

How can I increase audio volume of a mp3 file in audacity? I need to cut a part of mp3 song to make a ringtone. But as I save it in by mobile, the volume is too low for this particular file. Is there ...
2
votes
2answers
962 views

Free Linux tool to convert FLV to MP3

I'm looking for a free Linux tool that can convert a rather large collection of FLV files into MP3 format. Most of the tools I've tried use ffmpeg under the hood, but they fail to convert many of the ...
2
votes
3answers
446 views

What makes low quality speakers become distorted when at high volume?

Specifically speakers for tablets, phones, and laptops. I purchased a tablet in 2014, I got a tutorial on how to perform a modification of the system audio file which me very grateful when comparing ...
2
votes
3answers
404 views

portable player to replace minidisc

I've been using minidisc players for the last decade. Since that technology is as good as dead, and so will by my last player soon, I'm in the market for the latest and greatest portable music player ...
2
votes
2answers
425 views

Is it possible to mix MP3 Files into an audio mix a long mp3 without degredation?

I want to add and crossfade multiple mp3s into a long mix. Is there software that can mix many mp3's without re-encoding? If i use a normal mixing program and decode-re-incode, how much worse is the ...
2
votes
2answers
20 views

Program to generate midi sounds and sequences

I have a few songs I have written for a band using TuxGuitar, with the classic set of instruments: 2 guitars, 1 bass and drums. I can export this songs to MIDI, but since a while I've been searching ...
2
votes
1answer
122 views

How to generate a 1 minute long mp3 file with a bump of frequency change in 5s?

I'm looking for a software that would help me to generate a 1 minute mp3 file with a bump of frequency change (like a blip sound) in an interval of 5s. Can Audacity do that?
2
votes
2answers
709 views

Generate sound file from Db or SPL graph

I have a chart that shows values of the sound amplitude (in Db and SPL) measured in one point of the space as a function of the time. Could be possible to generate an audio file using these values? If ...
2
votes
1answer
788 views

Enhance badly converted 128kbps mp3 samples

i have very old recordings of songs (from my own bands) for which i don't have the source anymore and which have been badly converted to a bad quality mp3 (128kbps) I know that's all wrong but i was ...
2
votes
3answers
574 views

Join audio files into one mp3?

I have a bunch of mp3 files I would like to consolidate into a single mp3. What software is able to do this quick and effectively? I have tried online conversion tools and they don't work so well. I ...
2
votes
3answers
282 views

Multicore Mp3 encoder for OSX, is it available? Why not?

Hi Everyone, Not necessarilly a sound design question.. Everyone probably runs a multicore computer and since we are in the business of sound, we need to create a lot of mp3 files. Now this is ...
2
votes
1answer
428 views

MP3 Psychoacoustic Cut-off Frequencies for Low-Bitrate Presets

I've only seen frequency cut-off estimates for higher quality recordings. I'm interested in low bitrate frequency cutoffs: 24 kbps 32 kbps 40 kbps 48 kbps 56 kbps 64 kbps 80 kbps 96 kbps I have a ...
2
votes
1answer
796 views

How does MP3 and FLAC's encoding work

I am working on a research project and struggling on finding information on some of the more technical details about the working how MP3 and FLAC works to encode and compress its data. Most ...
2
votes
1answer
947 views

LAME bitrate and lowpass filters

Is there a formula or chart that specifies what lowpass filter LAME will automatically invoke for certain bitrates? I've looked around the net and can't find anything on this. And is there a specific ...
2
votes
2answers
2k views

What could be causing distortion on my MP3 when imported into Audacity?

I appreciate that this is an open ended question; I'm really looking for some pointers on what to look at next. I recorded 48 minute conversation into an MP3 at 128kbps. It's a stereo recording with ...
2
votes
2answers
2k views

mp3 encoding and settings

For encoding mp3s I use the Fraunhofer codec that I think sounds the best. I found it in Nero program and I can record my cubase arrangements in audacity and save it as a wav file in audacity and ...
2
votes
1answer
27 views

MP3 Podcast Problems… mp3 file format?

I'm having trouble with an audio file. If you look over at this Ask Different question I submitted, you'll see I was having issues with getting a podcast to work in iTunes. I finally narrowed it ...
2
votes
2answers
232 views

Extend periods of silence in mp3 files

I have a bunch of mp3 files containing lots (about 300 per file) of small (0.5s to 3s long) snippets of audio separated by 1s of silence. I want to edit these mp3 files (preferably losslessly) so ...
1
vote
6answers
3k views

Does converting an mp3 format audio file to m4a format makes audio quality better?

Does converting an mp3 format audio file to m4a format makes audio quality better ? I was just wondering if mp3 is lossy. How it can generate lossless m4a file after conversion. I know mp3 can be ...
1
vote
4answers
108 views

alternative to mp3

Often I have to import/export audio files to/from Audacity/Adobe-Premiere and back-and-forth. I know that mp3 is lossy format, but when I try to choose another alternative .wav, then it takes up to ...
1
vote
1answer
376 views

Will ripping my old 90's and 2000's CDs yield as good a quality as buying the MP3s today?

I have a bunch of old CDs from 1990 and 2000 that I want to rip as MP3s to my computer. I am not an audio buff, so perhaps this question is a bit irrelevant to my personal quality preferences, but ...
1
vote
3answers
757 views

How can I convert large audio file .aiff to mp3?

When I use GarageBand to record some audio, the audio files are too large (e.g.:1.86GB file size) and GarageBand won't export over 90 minutes long audio. Audacity cannot directly export to .mp3 file. ...
1
vote
3answers
510 views

Why is loudness war and mp3 bad?

So there are a lot of critics of overcompressed sound and mp3s. They say that the music industry is feeding us overcompressed music to make it sound good on low end devices. Now I'm confused, if music ...
1
vote
4answers
270 views

5 loudest and 5 softest points in an audio file

Is there a way with Audacity (or any other software) to find and and mark the 5 loudest and 5 softest points in a movie audio file? It seems like this should be easy to do. I know next to nothing ...