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Learning Core Audio: A Hands-On Guide to Audio Programming for Mac an…
Audio can affect the human brain in the most powerful and profound ways. The most sophisticated audio programming system ever created, Core Audio is not simple. In plain language, Adamson and Avila explain what Core Audio can do, how it works, and how it builds on the natural phenomena of sound and the human language of audio. Next, using crystal-clear code examples, they guide you through recording, playback, format conversion, Audio Units, 3D audio MIDI connectivity, and overcoming unique challenges of Core Audio programming for iOS.
This book will transform you from an acolyte into a true Core Audio wizard. Download the source code for the projects in each chapter of the book. March 13, All projects: With the release of Xcode 5. Because it has been a source of confusion for some readers, we are also moving all Foundation-based examples to use Automatic Reference Counting ARC. AirPods, Apple's new wireless earbuds, look a lot like standard EarPods without the wires. Reviews suggest they're similar in shape and size, but the internals are entirely different.
There are no wires between the AirPods -- each operates independently. You can wear both at the same time or wear a single one for a phone or FaceTime call. AirPods feature Bluetooth and an Apple-designed W1 chip, the first wireless chip Apple has created for intelligent, high-efficiency playback with a consistent, reliable connection. AirPods have an infrared sensor built in to detect when they're in the ear, and motion accelerometers respond to touch gestures, such as a double tap to activate Siri.
Voice accelerometers recognize when you're talking and then team up with beamforming microphones to reduce external noise, plus Apple says the AirPods have "incredible sound. Apple's goal, which it says no one has achieved, is a "wireless future" where all devices intuitively connect.
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AirPods are the first step towards that goal. The W1, paired with iCloud, connect seamlessly to all Apple devices with a one-step setup procedure and can instantly switch between devices. Apple calls it a "magical experience. AirPods last for five hours on a single charge and ship with a case that doubles as a battery source, for more than 24 total hours of battery life.
AirPods and the case can be charged through a Lightning connector. According to Apple, processor improvements and bigger physical batteries have resulted in the longest battery life ever in an iPhone. Those upgrading from an iPhone 6s to an iPhone 7 will see two hours of additional battery life on average while iPhone 7 Plus users upgrading from an iPhone 6s Plus will see at least an hour more battery life. In most cases, users will see much greater increases in battery. Curiously, when broken down on Apple's site, the iPhone 7 and 7 Plus get longer battery life during internet use and video playback, but shorter battery life for audio playback and talk time.
Still, Apple says average battery life during real-world usage has improved. Based on device teardowns, the iPhone 7 has a 1, mAh battery, an improvement over the 1, mAh battery in the iPhone 6s. The iPhone 7 and the iPhone 7 Plus feature a huge jump forward in camera technology, for photographs that are clearer, brighter, and crisper, even in low-light conditions. Optical image stabilization, once a feature limited to the 5. The megapixel high-speed sensor is 60 percent faster and 30 percent more efficient, and there's a new image signal processor with twice the throughput for faster camera performance across the board.
The image signal processor, custom designed by Apple, sets exposure, focus, white balance, and uses wide color capture for more true-to-life images. It features fourth-generation tone mapping and noise reduction, performing billion operations in just 25 milliseconds every single time a photo is taken with the iPhone. Wide color gamut support results in richer colors, especially for greens and some shades of red. Low-light photo capture is improved, and Live Photos feature stabilization, can be edited, and are accessible to third-party developers via new Capture and Edit APIs.
In addition to facial recognition, the iPhone 7 also features full body recognition. Professional camera tests have lauded the iPhone 7's excellent exposure, lower noise output, and richer colors, calling it a solid improvement over the camera in the iPhone 6s.
The camera features great exposures with wide dynamic range, accurate white balance and color rendering, and good detail preservation when shooting outdoors in bright daylight. A redesigned four-LED rear flash puts out 50 percent more light and reaches 50 percent further, plus it has a flicker sensor that can read the flickering of artificial lighting and can compensate for it in both photo and video.
The rear camera is protected by a sapphire lens cover to keep it safe from scratches. Video taking capabilities haven't been improved in the iPhone 7. It still includes 4K video recording at 30fps and p video recording at 30 or 60fps. All of the features built into the iPhone 7 are included in the iPhone 7 Plus, but it has one other unique feature -- a second lens. The two lenses create a new zoom feature that allows iPhone 7 Plus users to switch seamlessly between standard 1x zoom and an optical 2x zoom, right within the camera app. Optical zoom is superior to digital zoom because there's no loss of detail, but the 2x optical zoom function also enables better digital zoom for clearer photos up to 10x closer.
Apple says that because you're starting with a 2x lens when you zoom in with the iPhone 7 Plus, the quality is up to four times better than digital zoom in the iPhone 6s.
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As of iOS To achieve this, Apple's image signal processor scans a scene, using machine learning techniques to recognize people. It creates a depth map of the image from the two cameras, keeping the people in focus while applying an artful blur to the background. There's even a Live Preview effect that lets you see the background blur before taking the photo, something that's unique to the iPhone.
There's new sensor technology for sharper images, auto image stabilization to reduce shakiness, and the wide color capture feature of the rear-camera is also available on the FaceTime camera. There are two speakers in the iPhone 7, introducing surround sound for the first time. One speaker is at the bottom of the phone and one is at the top, for stereo sound in both portrait and landscape orientations. The two speakers put out twice the volume of the single speaker in the iPhone 6s and have a better overall sound thanks to increased dynamic range.
The iPhone 7 features Bluetooth 4. New in iPhone 7 and 7 Plus models sold in Japan is a FeliCa chip, which allows them to work with the FeliCa payments standard that's been widely adopted in the country. The iPhone 7 and 7 Plus support MacRumors attracts a broad audience of both consumers and professionals interested in the latest technologies and products. We also boast an active community focused on purchasing decisions and technical aspects of the iPhone, iPod, iPad, and Mac platforms.
Got a tip for us? Let us know a. Send us an email b. Anonymous form close x. By MacRumors Staff on May 7, At A Glance The iPhone 7 and 7 Plus are Apple's lower-cost iPhones, with camera improvements, a glossy black color, faster processors, and improved water resistance implemented through a click-less haptic home button and no headphone jack.
The iPhones first launched on Sept. Last Updated 7 weeks ago. Highlight Recent Changes Yes No. Sign up.
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