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Questions tagged [mp3]

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0
votes
1answer
26 views

How to merge ~700 very short, sequentially numbered, audio files into a single track? [duplicate]

I recently received hundreds of audio files from a government agency. They are numbered sequentially in the order they were recorded and each file is anywhere between 1 - 12 seconds in length. I am ...
0
votes
1answer
43 views

Why do YouTube Converters use MP3? [closed]

So youtube-dl shows that YouTube only uses Opus, m4a and vorbis containers. So how do these YouTube to MP3 converters get the MP3 then? Do they transcode from a lossy format? Isn't it better to get ...
2
votes
1answer
79 views

WAV file not in sync with source MP3 file

I am using NAudio and Adobe Media Encoder (separately) to convert a 2-hour MP3 file into a WAV file: The resulting WAV file is not in sync with the source MP3 file: MP3 second #996 = WAV second #...
1
vote
4answers
73 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 ...
3
votes
3answers
175 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 ...
0
votes
0answers
58 views

Is there a method to auto tag the original date of a song from a compilation album

I have a large MP3 music collection gathered over many years from my CD collection. I would like to retag the date field of all the individual files with the songs original release date. I have looked ...
0
votes
1answer
203 views

Can I change the MP3 encoder in Cubase Elements 7?

When trying to export MP3 format directly from Cubase I get an error regarding licensing: "No more encodings" I have Audacity, which uses the LAME encoder to make MP3 files. Currently the only way I ...
3
votes
1answer
193 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
297 views

MP3 and bitrate

So from what I know bitrate is the product of samplerate * bitdepth. But I cant understand this: here for example we try to create an MP3 file selecting bitrate to 320 and sample rate to 44.1khz ...
3
votes
2answers
119 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 ...
0
votes
0answers
62 views

What kind of audio format, how to convert it and / or fix audio length?

I recorded a file https://dl.dropboxusercontent.com/u/32620309/yle1_2016-12-14.asf.zip via the unix/ubuntu command "mplayer" I have difficulties to correct the total play time. Apparently it is not ...
0
votes
1answer
54 views

Playing MP3/AAC music on powered loudspeaker [closed]

I have a Mackie Thump15 15-Inch powered loudspeaker that I want to be able to play music from my iTunes library on. The speaker has active amplification and has a mic and line input. I read that I can ...
0
votes
1answer
195 views

optimal way to transcode 320 mp3 kbps to a more efficient lossy format? [duplicate]

Several thousand 320kbps mp3s of studio and live high fidelity recordings of concerts will be landing on my computer soon. (not pirated, I promise you!) I'm happy to have and use them for personal ...
1
vote
0answers
45 views

How do I find out the audio access unit duration from MP3 files?

This is defined in ISO/IEC 13818-3 as: 2.1.10 audio access unit [audio]: For Layers I and II, an audio access unit is defined as the smallest part of the encoded bit stream which can be decoded by ...
3
votes
1answer
769 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 ...
0
votes
1answer
91 views

Using .wav files works fine in DAW while using converted .mp3 files doesn't

I am working on Arch Linux and am trying to create an intro movie for my Youtube channel. The idea is to play "intro.mp3" which is played only once and then "loop.mp3" which will be playing on low ...
0
votes
2answers
164 views

Converting phone audio to save space - what's best?

Short version: What are the best settings to convert low-audio-quality WAV files into MP3 to save space? I plan on using ffmpeg. Hi, first time caller, long time listener, I have 22 GB of about 340 ...
1
vote
2answers
655 views

What sample rates can an MP3 file have?

The title says it all. What sample rates are possible for an MP3 file? It is my understanding that there are only a few bits for specifying the sample rate. I know that 44.1 kHz and 48 kHz are ...
0
votes
2answers
352 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. ...
5
votes
1answer
407 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 ...
1
vote
0answers
47 views

Windows Media Player 12 idiosyncratic (?) ripping/encoding behavior, mp3s [closed]

Hopefully I'm in the right section, please ignore/delete if not! I've noticed that it sometimes, for some albums, or even songs, WMP 12 doesn't even remotely offer the predicted 20.5kHz cutoff ...
1
vote
3answers
162 views

Which format for radio station to choose in Shoutcast?

In Shoutcast there is option to choose will radio station run mp3 or aac, and i am not sure which one is better option. Please recommend. What i read is that aac can provide same quality on lower kbps,...
1
vote
2answers
666 views

Do I lose any quality when trimming an MP3 with Adobe Audition?

I use Adobe Audition to trim out parts of MP3 files. I then save it as a new file. I get the following message: Now, do I really lose any quality from the original file? I mean, the format is ...
3
votes
2answers
89 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 ...
2
votes
1answer
4k 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). ...
0
votes
1answer
307 views

“Compress” an AIFF file?

I'm wondering how I can compress several AIFF files to reduce their size at this point I don't care about sound quality, I just need to reduce the file size the problem is that AIFF is an ...
0
votes
1answer
368 views

Check if www.listentoyoutube.com provides exact audio copy

If this question do not belong to this site, please tell me where it belongs if you are kind. I need to download the exact sound clip of youtube videos, and I've been using this online site: www....
2
votes
1answer
213 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 ...
5
votes
4answers
1k 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
748 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 ...
0
votes
1answer
167 views

Splitting podcasts on the introductory jingle

So I have a very large number of podcasts in mp3 format. Every podcast has the format: [1-2 minutes of adverts] [10 second jingle] [Around 14 minutes speech] The 10 second jingle is always exactly ...
1
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4answers
1k views

Why do mp3 files have a time delay when compared to wav files?

At first I thought this was a tempo issue when exporting my stems from fl studio to cubase. But when I zoomed in close enough and lined up the tracks they were perfect (ie. no stretching). The mp3 ...
2
votes
2answers
373 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 ...
1
vote
3answers
417 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 ...
3
votes
1answer
130 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, ...
0
votes
1answer
234 views

Transcoding detection

Is it possible to detect whether a digital audio file has been transcoded? For example, if I take a 96kbps MP3 file, decode it to WAV, and then re-encode it at 320kbps, it'll sound terrible, right? ...
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?
0
votes
2answers
316 views

How can I find the audible difference between a flac audio and it's corresponding mp3 file

I am looking for writing a program to achieve this. The video: https://tidalhifi.com/in/video/lossless-explained demonstrates what I am asking about. Thanks in advance.
1
vote
4answers
242 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 ...
4
votes
2answers
5k 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 ...
2
votes
1answer
750 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 ...
1
vote
1answer
128 views

How to handle conversion of 32728 Hz for playback on common software/devices? [closed]

I've been working on converting the soundtrack from a video game from its original format to something that you can easily play back on regular consumer devices. The system is Nintendo 3DS, utilizing ...
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 ...
2
votes
2answers
578 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 ...
0
votes
1answer
146 views

How to know best fit output quality for transcoding?

From time to time I have some files which I need to transcode for my personal mp3 player to play it. They may be recordings in other formats or even videos. I like to use VBR, as it gets the best ...
0
votes
2answers
80 views

Exporting from ogg to mp3 has poor quality

I have several sound effects in ogg format. I have to export them in mp3. I oppened each of them in Audacity and used export functionality to achieve my goal. But when I played the sounds in mp3 ...
-3
votes
1answer
162 views

Interpreting sampling rate of mp3 files

I thought mp3 encoding doesn't have a uniform sampling rate, how then sox --i shows sampling rate field for mp3s? I see 44100 sampling rate for an mp3 file.
0
votes
1answer
52 views

How can configure Rekorbox so that it records the computed BPM in the MP3 ID3's BPM field?

Rekorbox computes the BPM of an MP3 while analyzing it. How can I configure Rekorbox so that it records the computed BPM in the MP3 ID3's BPM field?
4
votes
2answers
11k 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 ...
1
vote
3answers
673 views

Looping mp3 in Flash / Actionscript

It's a known problem to loop mp3's because of the gap they have in the beginning. But since Flash has programatic control, I tried to use the offset to play it. Still, so far, I couldn't get it to ...