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Questions tagged [compression]

Compression is the process of lessening the dynamic range between the loudest and quietest parts of an audio signal

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1answer
2k views

How to connect dbx 286s and dbx 266xs to Behringer DX2000USB Mixer

This is my first question here. Thank you for your help! Much appreciated! I run a small online EDM radio station on a Mac mini running Radiologik DJ and NiceCast and I have been using the Behringer ...
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7answers
32k views

Why does a FLAC file have a lower bit rate than the CD file?

I ripped a CD to FLAC. Comparing the two versions of the same song with MediaMonkey, I noticed the original CD bit rate is 1411 kbps: whereas the FLAC file has a bit rate of 906 kbps: Why is this? ...
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1answer
585 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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1answer
25 views

Best speech codec for quality and compatibility

My company works with audio recordings of phone conferences. We record those as WAV then convert them to MP3 for storage. The stored MP3 files are the ones users globally can download. The problem is,...
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1answer
43 views

Any reason to use MP3 over AAC?

All information I found online indicates that AAC is superior to MP3 in every aspect, having better sound quality at lower bitrates/file sizes etc. So is there any reason to ever use MP3 instead of ...
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2answers
4k views

FLAC compression level comparison/efficiency analysis

I want to rip/archive all my music collection to a lossless but compressed file format, i.e. the files should all be perfect, lossless representations of the original data but should consume less ...
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4answers
3k views

Compressor vs Volume

Is it better to raise the volume or to use a compressor to do so? (In terms of clipping) Because when I use a compressor ofc I can make the sound louder, but by doing so I squash the sound, right? Is ...
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2answers
10k views

What is side chain compression?

I've heard mention of side chaining or side chain compression in reference to electronic music (specifically Daft Punk). What is it?
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1answer
141 views

limiter settings for recording dialog

I need some help with getting the best release time for my Zoom F8's DIGITAL limiters. I know they don't actually limit the analog audio, and that the AD Converters are clipping, but I at least want ...
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3answers
70 views

Is there a way to find the degree of compression used in a recording

I have recorded a live choir performance using typical compression parameters. Is there a way to find how much compression was used, and at which points?
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1answer
52 views

Making loud sounds louder but leave under threshold

It appears I'm looking for a reverse compressor. I want to have sounds under a threshold stay untouched but if it's over the threshold I'd like to make it even louder. Is this a compressor? Could ...
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3answers
986 views

Re-encoding MP3 reduces quality

If we have an MP3 file and we decode it to an uncompressed WAV file and then later encode it to MP3 again at the same sample rate - why is it that the quality gets degraded? This is a past exam ...
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1answer
246 views

What is the difference between Vorbis and Opus?

I would like to split up an audio stream (32bit floats) to chunks, encode them with a lossy compression and then decode it in the other side. I have no experience with audio codecs, so I started to ...
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2answers
175 views

Which acoustic spectogram shows higher quality of audio file?

I have three acoustic spectograms of different copies of the same song: MP3; 320 kbps; 9.20 MB M4A (AAC); 256 kbps; 7.46 MB; Converted from 1. audio file via iTunes M4A (AAC); 225 kbps; 6.87 MB ...
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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 ...
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4answers
84 views

Clipped sound although waveform never flattens out

I was listening to a song and noticed the drums sounding very compressed/clipped, but when I actually took a look at the waveform, this is how it looks: Now I'm wondering whether there is some kind ...
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1answer
50 views

Multiband Compressor or Octave-Band Filter plugin

I am looking for an octave-band filter which will allow me to adjust the individual gains of each octave band in the range 63 Hz - 8 kHz (8 bands) with as close to a brickwall response as possible (i....
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1answer
240 views

Which kind of dynamics processor is this (inverse expander, reverse compressor)?

You set a threshold at a certain level, specify a ratio of 4:1 and then for every 4 dB below the threshold, the output signal is boosted by 1 dB. Which tool/technique can be used to achieve this? ...
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1answer
118 views

What is the correct way to use multi band compression in a studio setting?

I use compressors quite often and I am quite familiar with their use to control dynamics but I haven't really got a good enough grasp of multi band compression. From what I understand, the equivalent ...
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2answers
61 views

Understanding The Effect Of Attack On The Dynamic Range Of A Compressed Signal

When downward compression is applied with a slower attack, I'm struggling to understand how the dynamic range of the signal as a whole is reduced. If the signal is a bass hit for example, where the ...
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2answers
121 views

mixing bass issues

I have problems mixing my bass composed by 4 notes in 4/1 (E3, B2, C#3 and A2 - scale of EMAJ) as the last note sounds much lower than the others. When I try to compress the channel that note won't be ...
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1answer
77 views

Compare audio samples with different bitrates

Even though I'm not a professional audio/video editor I'm trying to reach a good balance between quality and file size for movies and TV Shows, mostly very old, I have on my computer so, maybe, I ...
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1answer
38 views

Audio compression and/or EQ for general podcast recording software

I’m building general podcast recording software for users who are generally unfamiliar with audio. What is the best default configuration that I can provide for a dynamics compressor, filters, and/or ...
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7answers
2k views

in reality, do you believe convolution compression can work?

convolution reverb is a well known thing to us all... however, what about convolution compression? can it work? what do you think?
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1answer
249 views

Connect compressor directly to PC sound card

Imagine that you have: A microphone (XLR) Audio compressor (Behringer MDX2600) PC internal sound card (like Creative Sound Blaster Z) Is it possible to connect it like this?: Mic(XLR) > Compressor ...
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1answer
53 views

How to avoid killing headroom when mixing action scenes?

I was watching the Bluray of 13 Hours: The Secret Soldiers of Benghazi that day, and I am wondering how to avoid killing headroom when mixing action scenes like those in the movie. There were gunshots,...
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1answer
798 views

Creating audio file (mp3, wav, or wma) with one high frequnecy sound (20 kHz)

I am developing an application that will detect a high frequency sound played by TV. My TV is capable of playing mp3, wma and wav files. When I generate a high frequency audio sound file (18 kHz to ...
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4answers
76 views

Mixing advice - let me know your opinion

I'm producing a big room house track with ableton and was looking for some mixing advice: basically the different sounds don't glue together completely, like the bass and the leads are quite separate ...
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2answers
110 views

Notification sound that sounds decent over a low quality connection?

I'm a programmer without any real audio engineering experience playing around with procedural audio generation. I need to create a notification sound that sounds decent/not-horrible over a potentially ...
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1answer
260 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 ...
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2answers
248 views

Mid/side multiband compression

I am trying to master a track which is EDM(house) based and I am using izotope ozone 6. For instance, if there are (Low-end, Low-mid, High-mid, High-end) 4 bands, Which one would be the most ...
3
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3answers
427 views

Can compressed music files be adequately recovered by remastering?

I have some rare old music files on my drive that are compressed to 128 kbps in the mp3 format. Some of them are of digital origin, and some of them are vinyl rips. Audio data compression affects ...
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1answer
281 views

How can I fix robotic distortion from an audio track?

First of all I apologize if the title doesn't make any sense. I lack the vocabulary to describe the issue that I have with an audio track I'm trying to fix or at least make a little better. This is ...
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1answer
143 views

is there a common low-end level for a song?

I am currently mastering a song in iZotope Ozone 6. Both in Ozone's EQ and Multi-band Compressor, if I boost up the low frequency it sounds muddy, but it sounds soft if I bypass it. Is there any "...
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3answers
1k views

How can I compress my bassline like the linked Boris Brejcha track?

I'm trying to compress a bassline to sound smoothly with lowgain attack, but it is hard to accomplish this mission. Does anyone know how to help me make my bassline sound like this: ...
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2answers
12k views

How do I use the Insert I/O on my Behringer Mixer?

My Behringer X2442USB has a feature called Insert I/O. I understand what Behringer has to say about this feature but now how to use it. From the manual, INSERT Insert points enable the processing ...
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4answers
6k views

Best way to bounce down using Pro Tools?

Hello I have been syncing a trailer today and things are sounding good but none of the sounds reach 0db on the master fader. Is is best to compress each audio track or each clip? Or do I normalize ...
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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 ...
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1answer
407 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 ...
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2answers
320 views

How is compression quality related to sample rate?

The higher the sample rate is, the better the compression quality will be. That seems to be the conclusion to draw from several dynamics plugins I've worked with that implement oversampling (in this ...
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2answers
519 views

Will stereo compression affect stereo image?

What happens with the stereo image when compressing stereo program material using a linked dual compressor with a combined internal sidechain (a "stereo compressor")? Is the stereo image reduced, ...
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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?
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1answer
690 views

Approximate the Sound Forge “RMS Normalize” function using Sox?

In Sound Forge (Sony), there is an option under the Normalize function to normalize on RMS. You can choose a desired peak RMS value and it will bring the gain up as necessary to cause that value to be ...
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3answers
449 views

A Feedback Compressor

I was perusing website a few days ago and ran across the routing/bussing schematics for a "feedback compressor." Now I can't find the page and I'm wondering what exactly a "feedback compressor" is? ...
2
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1answer
44 views

Tool for improving old recordings

I'm looking for a tool like this, but not quite sure what to call it. I have a number of MP3s of recordings I did on 4-track tape back in the day. I quite like them but the recording is fairly poor ...
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2answers
394 views

Setting up side-chain compression in Sonar

I want to configure side-chain compression in Sonar LE, but I don't know how to do it. I have two tracks: a voiceover and music. I want the music to duck while the voiceover is talking. I can ...
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1answer
436 views

Mastering chain effects

This question has been asked in various forms but not yet completely in my view. I'm trying to find a good mastering chain for a sound effects library using say Waves plugins in pro tools. I see ...
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1answer
195 views

Audio Leveler Isn't Stable

Sorry if this question doesn't make sense (or uses the wrong terms, feel free to edit). I've got very little understanding of audio, but willing to learn. I've recorded a tutorial for Youtube and I'm ...
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3answers
208 views

Should I use a standalone compressor/gate or do it in post?

I'm recording screencasts and also dabbling in podcasting. I do video editing in Final Cut Pro X. My question is this: Is it better to use a standalone insert compressor/limiter/gate or have FCPX do ...
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1answer
134 views

Critical listening examples for compressors and digital filters?

I'm looking for listening examples for the following applications: -Compressors usage (what to listen for when changing parameters such as ratio, attack, release time, etc). I've found some material ...