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This is a discussion of [four common mistakes](#four-rules) that audio developers make, [how to do better](#solutions), and [how to detect whether there’s a problem](#diagnosis). It’s written primarily for developers, but should be accessible to non-developers too. I introduce [Realtime Watchdog](#diagnosis), a diagnostic tool for developers, and provide a brief [survey of popular audio libraries]
A simple, fast circular buffer implementation for audio processing [Circular buffers](http://en.wikipedia.org/wiki/Circular_buffer) are pretty much what they sound like – arrays that wrap around. They’re fantastically useful as scratch space for audio processing, and generally passing audio around efficiently. They’re designed for FIFO (first-in-first-out) use, like storing audio coming in the mic
UIImage, resolution independence and the iPhone 4’s Retina display iOS4 caters for the high-resolution Retina display that comes with the iPhone 4 by some rather clever abstraction, that moves away from the concept of ‘pixels’, and instead uses ‘points’, which are resolution-independent. So, when you display an image that’s been prepared for the Retina display, it’s represented with a scale factor
With a desperate need to debug a lengthy regular expression destined for use with the excellent [RegexKitLite](http://regexkit.sourceforge.net/RegexKitLite/) library, I have quickly put together a Mac OS X application. Reginald is a kindly old gentleman devoted to assisting you with those tricky regular expressions. Provide some sample input, and your regular expression, and Reginald will provide
Here’s a relatively easy way to achieve rounded corners on the standard image view in a UITableViewCell: cell.imageView.layer.masksToBounds = YES; cell.imageView.layer.cornerRadius = 5.0; Set this up when you create the cell (make sure you #import <QuartzCore/QuartzCore.h> at the top, of course). It would appear the UIImageView control creates sublayers to display the actual image content, which i
The UNIX shell provides a host of extremely useful utilities for modifying text. This OS X Automator service makes all of them available for filtering text in all OS X applications. This can be handy for performing quick operations, like replacing text with regular expressions, sorting lists or swapping fields around. When triggered, the service requests a command to use for filtering, then runs t
I’ve had nasty old time trying to get some audio stuff going on the iPhone, no thanks to Apple’s lack of documentation. If you’re an iPhone developer interested in getting RemoteIO/IO Remote/whatever it’s called working on the iPhone… Do I have good news for you. Read on. Wanna skip the Core Audio learning curve and start writing code straight away? Check out my new project: Update: Thanks to Joel
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