aetles + audio   13

I spent two hours with a mobile video genius and learned 26 useful things
Christian Payne is a photographer who teaches organisations like the BBC, the UN and Al Jazeera how to do in-the-field reporting using mobile phones. He also orders pizza to his train seat.
Last week I was lucky enough to spend some time picking Christian’s brain about using phones to make professional-looking video. At Fluxx, we use video all the time; for recording interviews and sharing how we work.
iphone  video  interviews  techniques  sound  audio 
april 2017 by Aetles
Some Practical Tips for my Podcasting and Voice-Over Friends — me, only louder
Podcasting and home voice-over work is exploding. But very few podcasters and voice actors possess the audio engineering chops to produce flawless recordings, which at best require extensive editing and at worse result in a sub-par product. As an avid podcast consumer and professional audio engineer, here are some of the things that drive me nuts:

Excessive ambient noise (computer fans, keyboard and mouse noise, trains, etc.)
Thin and harsh tone
Varying level due to inconsistent speech and poor enunciation
Varying level due to inconsistent distance from the mic
Digital distortion
Here are some tips that can help with these issues and get you the best possible recording
audio  tips  podcast  podcasting 
october 2014 by Aetles
Videos/Digital Show and Tell - XiphWiki
“Hi, I'm Monty Montgomery from Red Hat and Xiph.Org.
“A few months ago, I wrote an article on digital audio and why 24bit/192kHz music downloads don't make sense. In the article, I mentioned--almost in passing--that a digital waveform is not a stairstep, and you certainly don't get a stairstep when you convert from digital back to analog.
“Of everything in the entire article, that was the number one thing people wrote about. In fact, more than half the mail I got was questions and comments about basic digital signal behavior. Since there's interest, let's take a little time to play with some simple digital signals. ”
march 2014 by Aetles
3 Zoom H1 Recording Tips I Learned The Hard Way |
I've been shooting still for quite a long time now, about 18 years. But videos are really new to me. And it turns out that there is a learning curve. While I feel pretty confident about composition, exposure and stuff like this, some aspects are completely new to me.

Being on a shoot a few days ago, I learned a few tips the hard way. Weirdly enough, they all have to more with audio, and the Zoom H1 in specific, than with video.
audio  zoomh1 
february 2014 by Aetles
Choosing a Microphone
Choosing a Microphone
Bad audio can ruin even the best video! Learn about a couple different kinds of external microphones and when to use them.

Check out a version of this video using only the in-camera microphone below:

What's your go-to microphone? What pros and cons have you noticed with different options?

Products Mentioned:

Sennheiser ME66/K6 Microphone
Universal Shock Mount
Impact Light Stand
Boom Pole
Boom Pole Holder & Grip Head
Zoom H4N Recorder
Pearstone Mic Cable
audio  microphone  screencast  video 
january 2014 by Aetles
Can't Select Airplay Device for Output Audio - MacRumors Forums
Can't Select Airplay Device for Output Audio
It shows up as one of the options, but when I select it to automatically reselects the built-in speakers. Any ideas?

Killing coreaudio fixed it for me without a reboot:
sudo kill `ps -ax | grep 'coreaudiod' | grep 'sbin' |awk '{print $1}'`
mountainlion  osx  airplay  audio  spotify 
october 2013 by Aetles
Creating videos with 5.1 audio for the Apple TV, Mac, and iOS
However, if you hook up your Apple TV to a TV or other device that expects to receive uncompressed PCM audio, the Apple TV's unwillingness to decode AC3 can be a problem. In this case, if you attempt to play a video with just an AC3 audio track, the Apple TV will display an error message and refuse to play the video file. Apple itself shrewdly avoids this problem by always having a stereo AAC audio track in all the videos that it sells, so the Apple TV can simply fall back to the stereo track if the display device it's hooked up to can't handle AC3 audio. And the iPhone, iPod touch, and iPad can't decode AC3 audio either, so they depend on the stereo track as well.

Creating your own

So what does this mean when creating your own videos?

Most of the time, it shouldn't matter, as most audio sources are stereo or even mono, so a stereo AAC track is all that's needed. But when ripping DVDs to an Apple TV friendly format, you may want to preserve the original 5.1 audio track as well as create a stereo AAC track, just like Apple does. Handbrake, the powerful video conversion tool, will do this without much trouble.

Things get harder when you find yourself in possession of videos that only have an AC3 audio track. For instance, I downloaded a video from the Roskilde music festival from ClearBits, a place where freely distributable content can be found. This video was encoded in H.264 with AC3 sound in an MKV file. The good news is that iTunes, the Apple TV, and iOS devices can handle the H.264 video, but the bad news is that they don't handle MKV files or AC3 video. (Although the right plugins hide many sins when using iTunes in 32-bit mode, in 64-bit mode, these plugins are no longer supported.)

It is possible to convert the file without re-encoding the video with QuickTime Pro, but this is neither particularly easy nor especially fast. It is then possible to paste back the original AC3 track in the new video if you really know what you're doing. However, a better solution for this is Subler. 

Subler was originally a tool to add subtitle tracks to MP4 videos, but it is also very good at "muxing" audio and video tracks. What this means is that Subler lets you open a file and specify whether to convert the audio to AAC or keep it as AC3. Then, simply choose to add more tracks, select the original file again, deselect the video track, let the program do its thing, and Bob's your uncle. Bonus tip: make Subler write to the "Automatically Add to iTunes" folder inside the "iTunes Music" folder and (guess what!) the new MP4 file is automatically added to iTunes. I also experienced fewer glitches by checking the 64-bit mode checkbox in the save dialog.
appletv  appletv3  51audio  video  audio  mkv 
may 2012 by Aetles
24/192 Music Downloads are Very Silly Indeed
Articles last month revealed that musician Neil Young and Apple's Steve Jobs discussed offering digital music downloads of 'uncompromised studio quality'. Much of the press and user commentary was particularly enthusiastic about the prospect of uncompressed 24 bit 192kHz downloads. 24/192 featured prominently in my own conversations with Mr. Young's group several months ago.

Unfortunately, there is no point to distributing music in 24-bit/192kHz format. Its playback fidelity is slightly inferior to 16/44.1 or 16/48, and it takes up 6 times the space.

There are a few real problems with the audio quality and 'experience' of digitally distributed music today. 24/192 solves none of them. While everyone fixates on 24/192 as a magic bullet, we're not going to see any actual improvement.
audio  mp3  soundquality  highfidelity 
march 2012 by Aetles
Mastered for iTunes: how audio engineers tweak music for the iPod age
In an age when Apple has become the top music retailer without selling a single physical disc, audio engineers are increasingly creating specially mastered versions of songs and albums designed to counteract the audio degradation caused by compression. Though audiophiles typically scoff at paying for compressed audio, preferring vinyl or high-end digital formats such as DVD-A, mastering engineers are doing their best to create digital masters that can pass through Apple's iTunes algorithms with minimal sonic corruption.

To highlight work done to improve the sound of compressed music files, Apple recently launched a "Mastered for iTunes" section on the iTunes Store. It now also provides a set of recommendations for engineers to follow when preparing master files for submission to the iTunes Store. To qualify for the "Mastered for iTunes" label, Apple says that files should be submitted in the highest resolution format possible, and remastered content should sound significantly better than the original.

How does this work? Ars spoke with Masterdisk Chief Engineer Andy VanDette, who recently completed a project remastering the bulk of Rush's back catalogue. As part of the process, VanDette created special versions of each song specifically for uploading to the iTunes Store. He described the often lengthy, trial-and-error process of trying to make iTunes tracks sound as close as possible to polished CD remasters.
apple  audio  itunes 
february 2012 by Aetles
ZEN - HTML5-CSS3 Audio Player
It's a single-song HTML5 Audio Player, powered by jPlayer, styled and mostly animated with CSS3. About the name? Hmmm.. In the stopped/paused state, doesn't it remind you a little of a dark Zen stone lying on bright sand? Hint: Click and keep holding the progress bar circle for some skipping fun.
audio  css  html5  player 
january 2011 by Aetles
audio.js is a drop-in javascript library that allows HTML5's <audio> tag to be used anywhere.
It uses native <audio> where available and falls back to an invisible flash player to emulate it for other browsers. It provides a consistent html player UI to all browsers which can be styled used standard css.
It plays mp3s. No ogg. Because, lets be honest, in the real world, no one really exports ogg files.
audio  html5  javascript 
december 2010 by Aetles
Netgear?s DAVE700
DAVE700 är en kommande trådlös mediaspelare från Netgear. Jag önskar att Apple kunde göra en sådan här produkt.
Engadget  DAVE  mediaspelare  trådlös  wireless  media  player  video  audio  802.11g  netgear  Hemelektronik  Aetles  Hembio  Mactips 
october 2005 by Aetles

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