Questions tagged [encoding]

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2 votes
1 answer
58 views

Audio equivalent to QR code

I'm wondering if there is any protocol which would allow to encode data through audio in a human tolerable kind of way ? An example would be the LTC protocol which is not at all human tolerable (my ...
0 votes
0 answers
43 views

What is this new End-to-End Neural Audio Codec?

Soundstream is a new neural audio codec capable of efficiently compressing voice, music, and general audio at bitrates normally targeted by custom speech codecs. SoundStream is based on a model ...
0 votes
2 answers
50 views

What happens when converting between FLAC and Ogg / Vorbis?

out of curiosity I was wandering around Spotify's resources regarding audio formats and how songs are accepted and reworked for publication. I have read that the three formats used on the platform are:...
4 votes
1 answer
525 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 ...
0 votes
1 answer
126 views

Split audio by frequency

I would like recode wav files from stereo to 4 channels - front channels with low frequencies and back channels with high frequencies only; to store wav files on DLNA server and play on receiver in bi-...
7 votes
3 answers
15k views

Opus vs MP3 (Size & Quality Comparison)

How does Opus differ from MP3 when comparing both in relation to the file size and quality. For example if I were to convert a 320kbps or 128kbps file that is 10MB or 4MB in mp3 format to opus, what ...
1 vote
1 answer
50 views

How to tell if several audio tracks were encoded from the same source?

I have a number of audio tracks (in FLAC) and I would like to determine with some confidence if they all come from the same source (a CD) or if they were assembled and repackaged from multiple sources....
0 votes
1 answer
66 views

Possible to ffmpeg encode an MP3 media segment for HLS to follow existing MP3?

My use case is essentially DIY internet radio. I've abstracted the real-world constraints into a toy problem for simplicity, but these constraints are real for me. I'm shipping a 24/7 live HLS stream ...
12 votes
2 answers
35k views

What audio formats and codecs are used for YouTube videos?

I'm looking for an official YouTube page that lists all of the audio formats and codecs used for YouTube videos. I can only find information posted by unofficial sources without citing their source ...
0 votes
0 answers
97 views

Opus adds "unexistent" frequencies to the audio spectrum?

I admit that I am more than a newbie in terms of audio compression and everything that surrounds that world, but I was doing some research on how audio codecs work and how they actually cut off ...
10 votes
3 answers
9k views

difference between channel and track in midi files

I'm creating a program to read/write MIDI files, but I've run into a problem that confuses me. There are 2 bytes dedicated to the number of tracks, which means that there could potentially be 65536 ...
3 votes
1 answer
109 views

Why is Constant Bit Rate (CBR) not favorable?

I've noticed that among audio codecs, Variable Bit Rate (VBR) is typically the default. In fact, Vorbis and AAC do not support a truly constant CBR mode, instead offering a 'constrained' or 'managed' ...
0 votes
1 answer
357 views

Is audio better quality through a DAC meant for microphone encoing? (U-Phoria UM2)

Just experimenting with some of my equipment and my headphones. I'm reading that a DAC does all the decoding instead of the PC, basically achieving better audio. While I don't have the budget to get a ...
0 votes
2 answers
1k views

44100 Hz encoded in 24bit vs 16bit

I'm learning the basics of audio recording and mastering and I was thinking to some of my purchased audio collection. I have some assumptions that I feel may be incorrect or incomplete and would like ...
0 votes
1 answer
493 views

What should be the bit-rate & sample-rate settings, if I were to convert a WebM audio file to MP3?

I want to convert a WebM audio file to an mp3 file using FFmpeg. I was wondering what should be the ideal bit-rate & sample rate settings for the following input. Input #0, matroska,webm, from 'v....
0 votes
1 answer
543 views

What is the difference between changing mp3 file extension to .wav and using a converter instead?

What is the difference between changing mp3 file extension to .wav and using a converter instead. I am speaking in terms of end result. I thought mp3 and wav were actual different formats, but an ...
-1 votes
1 answer
26 views

Encoding with explicitly defined 'high quality' regions within variable bit rate lossy audio

I am personally happy with absolutely trash audio quality when listening to podcasts, and frequently skip music, but have noticed many podcast producers will use high CBR* or overly high quality VBR ...
5 votes
1 answer
1k 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
2 answers
9k 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
1 answer
1k 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 ...
0 votes
1 answer
865 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 ...
1 vote
0 answers
351 views

HTML5 audio recorder stream and upload to MVC server - Why is it noisy? [closed]

I'm trying to make a web audio recorder using getUserMedia and .NET MVC. I got as far as recording it and sending the chunks of data to the server. The problem is that i can't play the results. The ...
1 vote
2 answers
742 views

Are BRSTM files lossless?

Definition: .brstm is an audio file type that is commonly used on the Nintendo Wii and GameCube videogame platforms. Question: Is BRSTM a lossy or lossless file type? More Information: Although I'...
1 vote
1 answer
164 views

Is lossy encoding supposed to produce higher signal level peaks than those present in the original?

I just noticed a couple of files I converted from FLAC to M4A (AAC) with Selene Media Encoder + Nero AAC now have substantial clipping and distortion in them even though the original FLAC had none and ...
1 vote
1 answer
1k views

FLAC --bps setting real meaning

I'm going to grab some audio from DVD in best possible quality. My software supports FLAC encoder and lets me to choose various bit per sample settings for it: 8, 16 or 24. And I got confused. FLAC ...
1 vote
2 answers
1k views

Encoding OGG vorbis as CBR?

I'd like to use OGG@64kbps as an output format (for low data consumption). I'm currently writing an audio streaming client, and I need the estimated data size before streaming. It would be great if ...
4 votes
1 answer
110 views

Why did the size of my flac file increase after cropping?

I have a sound recording roughly 40 minutes long at 24bit 96khz. I've found that after trimming off about 40 seconds total of leading and trailing silence (well, quiet background hiss to be precise) ...
2 votes
2 answers
2k 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 ...
5 votes
1 answer
3k views

Which audio file format gives smallest size for silent tracks?

I want to make a bunch of silent audio files (of different lengths: A few seconds up to some minutes), just to but them into playlists and so on in order to have silent times in between. I am ...
2 votes
1 answer
1k 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
1 answer
311 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 ...
3 votes
1 answer
9k views

Best quality encoding when exporting "8-bit 8kHz Mono WAV" sample in Audacity?

I would like to know if there is a difference in the quality of audio when choosing between 8-bit WAV formats in Audacity Export? My Current method: Change "Project Rate (Hz)" in the bottom left ...
0 votes
1 answer
157 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 ...
1 vote
3 answers
2k views

How can I encode audio with Nero AAC Encoder using Mac OS X?

The Nero AAC Encoder encoder is far superior sound-wise to libfaac that comes with ffmpeg, but the encoder is only available for Windows. How can I encode using this encoder on Mac OS X? Other, even ...
2 votes
3 answers
340 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
2 answers
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 ...
4 votes
1 answer
658 views

How to maximize volume and sound quality of a YouTube video

We're trying to produce highest-possible quality (short, promotional, sound intensive) videos for YouTube, and want to achieve fullest possible sound. There's a huge range of sound volume/quality ...