Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [compression]

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

0
votes
3answers
69 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?
1
vote
1answer
45 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 ...
1
vote
1answer
74 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 ...
1
vote
1answer
142 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 ...
0
votes
1answer
1k 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 ...
0
votes
2answers
108 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 ...
0
votes
1answer
45 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....
3
votes
1answer
2k 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 ...
3
votes
1answer
155 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? ...
3
votes
1answer
116 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 ...
3
votes
2answers
60 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 ...
2
votes
1answer
71 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 ...
0
votes
1answer
33 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 ...
0
votes
0answers
33 views

Signal Processor Wiring Question

I've got a Beringer 4600 and a rack mount 16ch 4u mixer. I am a travelling video producer and am trying to lighten my load and condense equipment. I'd like to switch out the mixer for a more compact ...
0
votes
1answer
51 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,...
-1
votes
1answer
181 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 ...
0
votes
2answers
120 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 ...
0
votes
4answers
74 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 ...
0
votes
1answer
204 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 ...
0
votes
4answers
79 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 ...
1
vote
2answers
219 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
votes
3answers
253 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 ...
2
votes
1answer
130 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 ...
3
votes
1answer
135 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 "...
5
votes
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 ...
4
votes
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 ...
1
vote
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 ...
2
votes
2answers
253 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 ...
0
votes
1answer
337 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 ...
2
votes
2answers
429 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, ...
2
votes
1answer
172 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 ...
1
vote
3answers
423 views

Applying compression to a sound several times

I would like to know what happens, objectively speaking, when you apply compression to a sound 2, 3, or 4 times. I would beleive its useless to do this. Or counterproductive. I generally use a ...
0
votes
1answer
73 views

How to master a song? [closed]

What should I do when I have finished mixing a song and I want to master it? I don't have any processors on Master strip. I know that multiband compressors and limiters are usually used. I would like ...
0
votes
1answer
636 views

Audio codec with fastest decoding

I have an application that requires reading long (8h) compressed audio files. The quality and size of the file is not the main concern, but the time it takes to decode the full file is. WAV file does ...
3
votes
1answer
105 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 ...
2
votes
2answers
636 views

How to use multiband compressor in Mixing and Mastering?

I try to use Ozone-5 Multiband Compressor, but it looks very confused to me. I really want to know what is the purpose of doing Mutiband compression and How do you usually use it.
2
votes
2answers
376 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
1answer
71 views

Compress more than once? (VO multi-mix)

I'm a bit new to all of this, so I just wanted to get some advice from some pros. I'm doing VOs for different segments that are all going to be strung together into one final track. In stage 1 of ...
1
vote
3answers
431 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 ...
0
votes
1answer
53 views

Calculating compression output with a knee

With a hard knee you'd have an output as output=Threshold+(Input-Threshold)/Ratio Now, I found this pdf http://redmine.jamoma.org/attachments/download/175/JAES_V60_6_PG399.pdf which lists as a ...
1
vote
1answer
606 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 ...
0
votes
1answer
583 views

File format and settings for speech recording with small file size and keeping a decent quality

I use my Android phone to record speeches very often. I would like to know what is the most recommended file format for speech recording considering I would like to minimize the file size but keep a ...
6
votes
3answers
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 ...
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
446 views

Sequence inserts/plugins for voice

I'm editing some spoken word audio (lectures recorded on a wireless lapel mic). I am using the following effects in Pro Tools 8. I am proficient with using these effects individually. But does it ...
4
votes
6answers
884 views

Is it better to record a vocal as close to raw as possible, or to compress, eq etc along the way into Pro Tools?

I've been playing around with running vocals from our 1073 pre-amp into an Avalon compressor and EQ before hitting our Pro Tools rig. I'm loving the sound I'm getting, but am not sure if this is ...
0
votes
2answers
649 views

Differences between Waves CL-2A and UAD LA-2A

I bought the Waves Classic Compressors bundle yesterday and wondered if there is a noticeable difference between those and the one from UAD regarding sound and CPU usage. Has anybody tried both and ...
3
votes
3answers
3k views

What is difference between parallel compression and dry/wet knob on compressor?

as I understand parallel compression works by sending some track to compressor with some settings, and then turning send knob how much you want. Doing this, you will get some of the unprocessed signal ...
-1
votes
1answer
767 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 ...
5
votes
2answers
341 views

What are the differences between budget and more expensive hardware compressors?

I'm think about getting a compressor and I heard that Alesis makes one popular compressor for electronic music. I'm informed that the prices can differ much, so I wonder what is the difference between ...