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Questions tagged [encoding]

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0answers
33 views

What encoding algorith is suitable for encoding ultrasound?

I'd like to experiment with sounds produced by rodents (hamsters), whose hearing range is somewhere around 1-70kHz (mice), or possibly even higher towards ultrasound. What would be a suitable ...
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0answers
131 views

Opus encoding by quality or constant rate factor (CRF) rather than bitrate

Using lame for MP3 or oggenc for Vorbis, I can specify a quality level rather than a target (average variable) bitrate: lame -V3 -q0 song.wav song.mp3   – Quality 3 of 0-10 (0=best),   ~...
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1answer
243 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 ...
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0answers
173 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 ...
2
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2answers
207 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'...
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1answer
80 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 ...
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1answer
440 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 ...
4
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1answer
7k 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 ...
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1answer
464 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 ...
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2answers
706 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 ...
4
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1answer
2k 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
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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). ...
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2answers
618 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 ...
2
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1answer
297 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 ...
4
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1answer
66 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
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1answer
783 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
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1answer
130 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
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1answer
8k 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
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1answer
148 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 ...
2
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3answers
266 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 ...
7
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2answers
4k 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 ...
2
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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 ...
4
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1answer
236 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 ...
4
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1answer
512 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 ...
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1answer
4k 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 ...
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3answers
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 ...