Questions tagged [audio]

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19
votes
9answers
1k views

An open source sound editor, but not Audacity?

I am looking for open source/free software for casual sound editing. I've tried audacity, I know it's capable tool but really I dont like the interface. Tried snd, can't get it to work. I am looking ...
14
votes
3answers
47k views

How to recover audio from an incomplete or corrupted AAC/m4a file

I recorded an 85-minute AAC/m4a file using Notability on my iPad. This app has always worked well before but for some reason there was a problem this time. The relevant file shows up as having 21MB (...
12
votes
7answers
110k views

Stream Windows audio over the network

How would I take all sound on a windows machine and broadcast it over the network for other machines to hear? I can find instructions for individual apps, but I don't want to do this on a per app ...
11
votes
4answers
27k views

Are there free records of separate piano notes in .wav files for instance?

I'm trying to find some piano sound bank -for my childish experiments with sound - the most desired form is of course a number of .wav files, each one corresponding to a piano key - being a record of ...
9
votes
5answers
67k views

How can I get rid of the annoying background hum on a new Yeti Microphone

I recently purchased a Blue Yeti USB microphone for use in recording screencasts. I am using Screenflow to record with and while the sound is excellent in quality there is a nasty hum in the ...
9
votes
9answers
3k views

What are some disadvantages of audacity?

I've been using Audacity for a while and it seems like the perfect recording studio: free, open source, great features, easy to use, its easy to fall in love with. However, I want to have a more ...
9
votes
4answers
13k views

“Subtracting” specific audio using an Isolated track from the same mix.

I have an audio file (Music + Vocals) and I have an instrumental (Music Only). Is there a program or some way I can take the music file and subtract the instrumental leaving only the vocals? (Full ...
8
votes
4answers
358 views

Is it a good idea to use headphones for audio production?

Is it generally a good idea to use headphones in the production/mixing of audio? And what can I do if my speakers are terrible (e.g. laptop speakers), and I'm on a shoestring budget?
8
votes
7answers
9k views

Normalising volume across thousands of files

For a project I'm working on, I need to produce approx 5000 voice-only recordings of approx 15 seconds each (typically each file is a couple of short sentences spoken aloud). I've approached this as ...
8
votes
4answers
26k views

Is it better to use a DI unit or USB audio interface to connect guitar to PC?

I'm looking for an economical way to play my guitar and possibly record on my computer without purchasing an amp. I'm hoping this will save me some money and still produce reasonable quality output ...
8
votes
1answer
50 views

Can opening closed speaker cabinets for service affect the sound?

I have two pairs of speakers that could do with opening them up to investigate problems--one decades-old set of Celestion hi-fi speakers that has developed a rattle, the other a set of M-Audio ...
8
votes
2answers
17k views

Does having a long 3.5mm cable degrade audio quality?

I've been looking into mics and I've heard that 3.5mm cables have problems with audio degradation over long distances. How long does the cable have to be before I start experiencing issues?
8
votes
1answer
200 views

How can I set PulseAudio to use convolution

I'm using Ubuntu 11.04 and PulseAudio. I made impulse to correct bass response on my speakers and would like to use it globally. I can set Jack through jack-convolve plugin to use my impulse, but as ...
7
votes
4answers
9k views

In what units is a sample's amplitude value represented, and how it relates to the real world?

I'm new to digital audio signals and read about sampling rate on hydrogenaudio. What this doesn't mention is how a single sample's value, ranging from -32768 to 32767 in a 16 bit, relates to any real-...
7
votes
2answers
814 views

Vectorized audio? Does it exist? Its pros and cons? Which formats?

In grahpics-design, vectorized content are much easier to work with version-control rather than raster images: much smaller space so more fit to Git -style version-controlling. Can I do it somehow ...
7
votes
1answer
1k views

Is there a 'diff tool' for audio?

Ideally in Premiere Pro, I'd like to have a way of seeing the changes I make to an audio file that I edit in Audition to be reflected in a workable format for the video editing in Premiere Pro. I've ...
6
votes
3answers
9k views

creating glissando/portamento with piano roll editors

I've been using several Midi sequencers with piano roll editors (Ableton, Reaper) and none of them seem to have a straightforward way to join two or more note events into a single glissando or ...
6
votes
2answers
930 views

How to eliminate guitar amp hum (software and hardware amps)

There's nothing quite like the sound of a guitar playing into a warm tube amp with the pre turned up high and the post turned down. There's also nothing quite like the hum you get out of one of these ...
6
votes
3answers
31 views

Converting voice into modem sounds

I'd like to record my voice and apply some effects on it. The final result should remind the listener of phone lines or some modem sounds, but only the melody and rhythm of the language should be kept ...
6
votes
1answer
212 views

How to keep audio-fequency noise from my refrigerator out of my audio gear?

I recently replaced my refrigerator with a brand new LG model LTCS20220W. The fridge is silent, but when it is running, my guitar amplifier is picking up a 4,500Hz signal which is driving me crazy. I ...
5
votes
6answers
47k views

Is it possible to separate voices from one mp3 file?

I want to separate 2 or more voices from one audio file, is there any software to this ? I have done some googling and seen that the answer is NO in most cases. But I think at least there should be ...
5
votes
3answers
5k views

How can I create dubstep-style wobble bass lines in Audacity?

What is the most effective way to produce wobbling bass lines, such as that you might hear in the "dubstep" (a.k.a. techno-bass) genre? My current idea is to generate a linear sine wave that goes ...
5
votes
1answer
10k 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 ...
5
votes
3answers
64 views

Which music sw should I consider for aligning audio waveforms to MIDI piano roll, looping MIDI, managing program change, SysEx?

Which music software should I consider for aligning audio waveforms to MIDI piano roll, looping MIDI, managing program change, SysEx? In my projects, I'd like to be able to: see audio and MIDI ...
5
votes
1answer
7k views

Isolate the difference between two mostly-identical audio tracks?

I have two audio tracks which are mostly identical. I want to isolate the differences between the two. I can use Audition, Audacity, or really anything else.
5
votes
3answers
25k views

Is it possible to raise/lower the volume of different voices?

This is probably an extremely easy question for you, but I'm very new to this. I found a video file of my niece talking and screaming on my phone, but I'm trying to hear the voice in the background. ...
5
votes
2answers
8k views

How to loop vinyl records?

In this video the opening is accompanied by the sound of a looped vinyl. At 9 seconds in you can see the vinyl record with several tape markers. How is the looping of the vinyl achieved? Is it ...
5
votes
6answers
12k views

Fix for terrible “Hard Drive Noise” Audio Interference?

When recording direct input instrument audio using Ableton, my recording is plagued with a terrible noise interference that sounds like the clicks and movements of my PCs internal Hard Disk drive. ...
5
votes
1answer
3k views

How to loop an engine sound so that it doesn't sound looped?

I have this audio clip here. It's of a car revving up through the gears. I'm making a game and the sound for each gear of the car is all stripped from this one audio file. Although, I need to make ...
5
votes
2answers
9k views

Export from garageband to audacity

I want to export ALL the audio tracks from garageband to audacity. I searched on the internet and it is apparently not possible ( here for instance), or better it is possible but one track at time. ...
5
votes
1answer
2k views

Preserve embedded album art when converting from .flac to .ogg

I want to convert my archived .flac library to .ogg for daily use. Using find ./ -iname '*.flac' -print0 | xargs -0 -n1 oggenc -q6 on the root music folder and then deleting every .flac (having ...
5
votes
2answers
2k views

Why does does my audio go out of sync every time I reencode either the audio or video stream?

I have a video in an AVI container. The video is H264 AVC and the audio is VBR MP3. (I don't know if this is relevant— I recorded it in from an analog video capture card, from a VHS. The ...
5
votes
1answer
809 views

how can I make sounds of different frequencies appear subjectively equally loud?

I'm making an experiment where I play pure tones of three different frequencies (220 Hz, 440 Hz, 880 Hz) at 75 dB SPL. I've noticed that they don't sound equally loud, and I would like them to. I ...
5
votes
1answer
396 views

What to fix first, audio or video?

I have made a short timelapse of some nature phenomena. I would like to add ambient-like background music to it with Ableton Live. Both the timelapse and the music are (going to be) made by me, the ...
5
votes
3answers
1k views

How do I properly set levels for a recording and the environment I'm mixing in?

I am using FL Studio 10 on a Windows 7 PC, I have some speakers I'm using as monitors, but here is my problem. If you count the volume level knobs on the plugins (2 of them), volume level on the ...
5
votes
1answer
587 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
3answers
13k views

What is the difference between low-pass and high-cut filters?

Is there any difference between low-pass and high-cut filters? There must be, and that's why they're named differently. But, when and why would you use one instead of the other?
4
votes
2answers
477 views

FLAC vs MP3 (Lossless vs Lossy)

I tried to compare one file which was flac with mp3 file that was converted from FLAC. I kept comparing these two files and I really had hard time differencing between these two codecs. It was ...
4
votes
2answers
2k views

How can I cut out background noise from my footage?

I recently shot some video footage and I used the camera's mic (I know it was a bad idea, but...). Unfortunately, there was some on-going background noise (I think it was a fan). How can I get rid of ...
4
votes
4answers
505 views

Simple free program to add audio to video?

I am looking for a small free tool that will allow me to add some audio to my video. Windows movie maker doesn't seem to work well from some reason. Any recommendations?
4
votes
2answers
62 views

I want to connect my iPod using the headset jack to a portable PA system and am worried about phantom power

I have a Liberty 4500 portable PA system and a headset plug to male XLR adapter. I am afraid the phantom power from the Liberty PA system will fry my iPod. How can I prevent it from happening?
4
votes
2answers
3k views

What type of information can I get from the waveform and the spectrum of audio?

If I have the spectrogram and waveform of a clip of audio what sort of information can I gather by looking at those two things?
4
votes
4answers
2k views

Add white noise to silence

I edited an audio track where I silenced out unwanted interjections from the off. However, since the original track has a low but noticeable noise the perfect silence introduced with the silence ...
4
votes
3answers
662 views

How do audio engineers (physically) treat rooms for studios?

Here's my problem: I live in a small apartment downtown São Paulo - it's noisy as it can be. Loud traffic, people screaming and buses circulating day and night. This was never a problem - I usually ...
4
votes
2answers
6k views

Why do mp3 have sample rate?

So my understanding of mp3 or any lossy file format is that a lossless audio such as wav will be sampled at some rate i.e. 44.1kHz and the mp3 will compress each second of that to a constant rate of ...
4
votes
2answers
5k views

What impact does applying gain to a digital audio signal have on playback?

I'd like to know what role digital gain (volume) control has on logical and perceived quality. I do have knowledge about how audio is stored digitally but do not know how volume works beyond the fact ...
4
votes
1answer
69 views

Not enough patches in my stage piano

I'm playing Synths for a production of Beauty and the Beast. The Yamaha P155 Stage piano I have is great to play, but is missing many of the required patches. I have a midi cable, mac running ...
4
votes
1answer
75 views

How should I compare headphones?

I'm finding difficulty in selecting one of these products and I thought you guys could help me better finding the best out of these four headphones . http://www.flipkart.com/headphones/compare?ids=...
4
votes
1answer
8 views

How to display video via audio from a computer

Is there a sound which will create a stable image on a normal television? I ask this because I want to fool a television into playing audio. The problem is that it will not play audio at all without a ...
4
votes
1answer
7k views

What is the proper way to reduce audio sample rate and bit depth?

When presented with a lossless audio file, what is the proper way to reduce sample rate and bit depth? When reducing bit depth, I understand that I should apply dither, but I don't know what scale or ...