In audio, the manipulation of the dynamic range of a signal. This is done by reducing the difference between the largest and smallest amplitudes. In video, the reduction of the required data rate. This is done by reducing the amount of data required to reproduce the picture.
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168 views
In which situations is Audio Expansion applied (opposite of compressors)?
I've encountered from time to time some plugins that allows a threshold and a ratio to be set so that quieter sound can have an even more quieter level (or silenced altogether). Ableton Live actually ...
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votes
3answers
178 views
Live rock band having issues with vocals being buried
We are an independent touring band that has been having issues with the vocals being lost in the mix. Our singer is constantly told that she's being drowned out by the band. The band consists of a ...
5
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1answer
157 views
Is it wrong to use compression on the master bus?
I've read some pretty conflicting statements about what people should or shouldn't do when it comes to putting effects on the master bus. In general, what I always do is put on a compressor but have ...
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votes
2answers
61 views
Recording/mixing/mastering drums
I'm working on a project where I am to mix/master drums to a backing track (sort of a drum-replacement project.)
I've gotten the drums to sound pretty great on their own but was just wondering if I ...
4
votes
2answers
358 views
Side chain sources for a compressor working on a guitar or bass signal?
I've only ever used side chain triggering for compressors acting on drums. Where a kick signal compresses snare and toms. I'm trying to figure out some interesting use cases for side chain compression ...
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votes
3answers
219 views
Techniques on Mastering
I'm interested in creating the most 'dynamically interesting' sound from music that I've produced on a computer, which includes vocal samples, bass, rhythm and instruments.
At first I was happy with ...
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votes
3answers
121 views
Adding voiceover without video recompression
I have some mp4 video files with pretty poor video quality. I need to add a voiceover translation. I have seen some video software programs that could do the job but unfortunately most of these ...
3
votes
3answers
111 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 ...
3
votes
1answer
219 views
Where does Levelator fit in with traditional compression/gating/limiting?
I understand the basic concepts of compression, expansion, gating, and limiting, but I'm still working on best applying them to my podcast to achieve the best resulting sound. I'm also working on ...
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2answers
82 views
Sources to learn more about Audio/Video compression, codecs, algorithms etc.
I was quite surprised when I learned the fact that the MP3 codec is extensively based on the Fourier Transform. I'd like to learn more about these topics in general. When I say more I mean the working ...
2
votes
3answers
166 views
What's the best ubiquitous format for compressed voice audio?
I'm sharing records from phone conferences on my website, and would like to save space. It would be nice if I could use speex as I get about 5:1 compression compared to mp3. However most people would ...
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votes
1answer
38 views
Bluray I/O speed
I don't know if this is the correct place to ask this type of question, but here is it.
I wanted to find a ball park size of each blu-ray frame size in bytes. This is my calculation which cannot be ...
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votes
1answer
101 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 ...
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votes
2answers
149 views
How is compression different from normalization?
Newbie question. I originally asked this here in the comments but I was advised to post this as a separate topic.
If I understand correctly, compression reduces the volume range of a sound so that it ...
2
votes
1answer
135 views
How to achieve overcompressed sound?
How can I make a track sound like its over-compressed, like this one:
http://mp3.juno.co.uk/MP3/SF1228842-02-01-02.mp3
?
(I'm using the izotope Ozone plugin inside a VST host)
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votes
1answer
88 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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0answers
86 views
How do LPC encoders work
I asked this question on the DSP forum and got a reasonable answer but the answer was very technical and was wondering whether someone could give me a more general idea of how it works. My ...
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vote
3answers
2k 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 ...
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vote
3answers
1k 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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vote
4answers
292 views
Is buying a compressor a good thing for vocal recording?
I have a little home studio and so far, just recording with my Studio Project B1 microphone right in my Presonus Firebox was ok for vocals. I have some money to spend on an upgrade for this setup, and ...
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vote
2answers
27 views
Last bit of RGB changed
I'm going to compress a video but I have one problem.
Is a frame with a bit(last bit) of each color(RGB) changed unacceptable or distinguishable from the original one in HD?
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vote
1answer
266 views
Burn a single HD video into a DVD without losing quality
I created a video (slideshow of 14.2MP photos and music) using Windows Live Movie Maker. The video's resolution is 1440x1080 and is as WMV with 840MB.
Now what I want is to burn that HD video (no ...
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1answer
40 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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vote
1answer
162 views
How do DVDs avoid the blockyness that plagues dark scenes in most video files?
When a DVD is ripped to a file on a computer the dark scenes typically get compressed to the point of illegibility; huge squares of black are all set to the same value, removing all the detail. This ...
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vote
2answers
219 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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vote
1answer
285 views
Sony Vegas 10 Video made from smaller quicktime mov videos look crap on youtube
this has been a painful drama for days, trying to get a nice video on youtube for my girlfriend. It looks great on the mpg file sony vegas generates, but after uploading to youtube it look more than ...
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3answers
176 views
How to Create a High Quality, Small File Size .mp4 from .mov
Recently, I helped a friend produce a short zombie comedy.
He has now asked me to add it to the film's website as a digital download. I'm not having issues with the digital download. My issue is how ...
0
votes
2answers
191 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
295 views
Background color of MP4 rendering incorrectly in QuickTime
I am converting a .MOV file into .MP4, .OGV and .WEBM for web use. I have found that the background rendered by QuickTime and Safari is not white although the same MP4 has a white background when ...
0
votes
1answer
112 views
Program to decompress WaveZip on 64-bit
Anyone know of a 64-bit or 32-bit windows compatible program to WaveZip compressed files? I just tried to install WaveZip on my 64-bit Windows machine and it is 16-bit and won't install.
0
votes
0answers
59 views
Exam Question - end-to-end delay from video capture to video playout
Hi I'm preparing for my exam tomorrow and I've come across a 17 Mark question which seems trivially easy, so I think I'm missing a key point giving the rest of this exam is fairly difficult. The ...
