- Free Audio Recording Software Mac
- Mac Audio Software
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- Download Core Audio Driver For Mac
- Mac Core Audio Driver
The principal framework for audio development in Mac OS X is Core Audio; it's the basis for all audio I/O. There are layers on top of it like Audio Toolbox, Audio Queue Services, QuickTime, and QTKit that you can use if you want a simplified API for common tasks. What Is Core Audio? Core Audio is the digital audio infrastructure of iOS and OS X. It includes a set of software frameworks designed to handle the audio needs in your applications. Read this chapter to learn what you can do with Core Audio. Core Audio in iOS and OS X. Core Audio is tightly integrated into iOS and OS X for high performance.
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This download provides the Realtek* High Definition Audio Driver for the 3.5mm audio jack on Intel® NUC Kit. This audio driver is required if you plan to connect a microphone or headset to the audio jack.
If connecting to a TV or monitor using an HDMI or DisplayPort cable, the audio is provided through the graphics driver available for your Intel® NUC product.
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- By Chris Adamson, Kevin Avila
- Published Mar 30, 2012 by Addison-Wesley Professional. Part of the Learning series.
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- List Price: $35.99
- Includes EPUB, MOBI, and PDF
This eBook includes the following formats, accessible from your Account page after purchase:
EPUBThe open industry format known for its reflowable content and usability on supported mobile devices.
MOBIThe eBook format compatible with the Amazon Kindle and Amazon Kindle applications.
PDFThe popular standard, used most often with the free Adobe® Reader® software.
This eBook requires no passwords or activation to read. We customize your eBook by discreetly watermarking it with your name, making it uniquely yours.
Description
- Copyright 2012
- Dimensions: 7' x 9'
- Pages: 336
- Edition: 1st
- Book
- ISBN-10: 0-321-63684-8
- ISBN-13: 978-0-321-63684-3
Audio can affect the human brain in the most powerful and profound ways. Using Apple’s Core Audio, you can leverage all that power in your own Mac and iOS software, implementing features ranging from audio capture to real-time effects, MP3 playback to virtual instruments, web radio to VoIP support. The most sophisticated audio programming system ever created, Core Audio is not simple. In Learning Core Audio, top Mac programming author Chris Adamson and legendary Core Audio expert Kevin Avila fully explain this challenging framework, enabling experienced Mac or iOS programmers to make the most of it. 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. Coverage includes: mastering Core Audio’s surprising style and conventions; recording and playback with Audio Queue; synthesizing audio; perform effects on audio streams; capturing from the mic; mixing multiple streams; managing file streams; converting formats; creating 3D positional audio; using Core MIDI on the Mac; leveraging your Cocoa and Objective-C expertise in Core Audio’s C-based environment, and much more. When you’ve mastered the “black arts” of Core Audio, you can do some serious magic. This book will transform you from an acolyte into a true Core Audio wizard.
Downloads
Downloads
Download the source code for the projects in each chapter of the book.
CHANGES for 'Learning Core Audio: A Hands-On Guide to Audio Programming for Mac and iOS' sample code
March 13, 2014
-------------
All projects:
With the release of Xcode 5.1 and iOS 7.1, we are updating all projects to use 'Latest OS X' or 'Latest iOS' as their target SDK, rather than risk breakage as newer versions of Xcode drop older versions of the OS X and iOS SDKs. We are also modernizing the project files to use LLVM and LLDB, the supported compiler and debugger as of Xcode 5.1.
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). This means the downloadable code no longer matches the book, in that all uses of retain/release, autorelease pools, and explicit calls to dealloc been removed, and that toll-free bridging casts now take the appropriate __bridge modifier. But we've found that ARC is now sufficiently entrenched that some people don't recognize the pre-ARC memory management techniques.
There are no code changes other than those required to handle ARC or resolve new compiler warnings (most of which are just explicit casts). The code zip includes all errata fixes from the earlier updates posted in 2012 and 2013.
Each project now has its own README.txt file describing the project. These files include the individual changes made as part of this update.
Individual examples:
We've re-colored the piano keyboard buttons in the CH11_MIDIWifiSource .xib, since iOS 7 made them not look like buttons.
CH12_MIDIToAUSampler now includes the .aupreset file and source sound used when writing the book, though we still recommend building your own preset with AU Lab. This same preset has always been included with the CH12_MIDIToAUSamplerIOS example, since the iOS version needs to find the preset within its own app bundle, unlike OS X, which searches known filesystem paths.
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Sample Content
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Sample Pages
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Table of Contents
About the Authors xiii
Foreword by Mike Lee xv
Introduction 1
Audience for This Book 2
What You Need to Know 3
Looking Up Documentation 3
How This Book Is Organized 5
Free Audio Recording Software Mac
About the Sample Code 9
PART I: UNDERSTANDING CORE AUDIO
Chapter 1 Overview of Core Audio 13
The Core Audio Frameworks 14
Core Audio Conventions 15
Your First Core Audio Application 16
Running the Example 19
Core Audio Properties 22
Mac Audio Software
Summary 23
Chapter 2 The Story of Sound 25
Making Waves 25
Digital Audio 27
DIY Samples 32
Buffers 40
Audio Formats 40
Summary 41
Chapter 3 Audio Processing with Core Audio 43
Audio Data Formats 43
Example: Figuring Out Formats 46
Canonical Formats 51
Processing Audio with Audio Units 53
The Pull Model 55
Summary 55
PART II: BASIC AUDIO
Chapter 4 Recording 59
All About Audio Queues 59
Building a Recorder 60
A CheckError() Function 63
Creating and Using the Audio Queue 64
Utility Functions for the Audio Queue 71
The Recording Audio Queue Callback 75
Summary 78
Chapter 5 Playback 81
Defining the Playback Application 81
Setting Up a File-Playing Audio Queue 83
Setting Up the Playback Buffers 85
Starting the Playback Queue 88
Playback Utility Functions 89
Handling the Magic Cookie 89
Calculating Buffer Size and Expected Packet Count 90
The Playback Audio Queue Callback 91
Features and Limits of Queue-Based Playback 94
Summary 95
Chapter 6 Conversion 97
The afconvert Utility 97
Using Audio Converter Services 100
Setting Up Files for Conversion 102
Calling Audio Converter Services 105
Implementing the Converter Callback 109
Converting with Extended Audio File Services 112
Reading and Converting with Extended Audio Files 116
Summary 118
PART III: ADVANCED AUDIO
Chapter 7 Audio Units: Generators, Effects, and Rendering 123
Where the Magic Happens 123
How Audio Units Work 124
Sizing Up the Audio Units 126
Your First Audio Units 129
Building the main() Function 131
Creating an Audio Unit Graph 133
Setting Up the File Player Audio Unit 137
Speech and Effects with Audio Units 141
Building Blocks of the Speech Synthesis Graph 142
Creating a Speech Synthesis AUGraph 144
Setting Up a Speech Synthesizer 146
Adding Effects 147
Adding Your Code to the Audio Rendering Process 150
The Audio Unit Render Cycle 150
A Custom Rendering Example 151
Creating and Connecting Audio Units 154
The Render Callback Function 155
Summary 160
Chapter 8 Audio Units: Input and Mixing 161
Working with I/O Input 161
Connecting Input and Output Units 164
Creating an AUHAL Unit for Input 168
Writing the Input Callback 176
Building an AUGraph to Play Samples from a CARingBuffer 178
Writing the Play-Through App’s Render Callback 181
Running the Play-Through Example 182
Mixing 183
Summary 189
Chapter 9 Positional Sound 191
Sound in Space 191
The OpenAL API 193
Putting a Sound in Space 196
Setting Up the Example 197
Using OpenAL Objects 200
Animating the Source’s Position 205
Loading Samples for an OpenAL Buffer 206
Streaming Audio in OpenAL 210
Setting Up the OpenAL Streaming Example 210
Setting Up an ExtAudioFile for Streaming 215
Refilling the OpenAL Buffers 217
Summary 220
PART IV: ADDITIONAL TOPICS
Chapter 10 Core Audio on iOS 223
Is That Core Audio in Your Pocket? 223
Playing Nicely with Others: Audio Session Services 224
An Audio Session Example 227
Setting Up the App 227
Initializing the Audio Session and Audio Queue 231
The Tone Generator Method 234
Handling iOS Interruptions 236
Audio Units on iOS 238
Building an Audio Pass-Through App with the iOS RemoteIO Unit 239
Setting Up the Pass-Through Example 241
Setting Up the RemoteIO Audio Unit for Capture and Play-Out 244
The RemoteIO Render Callback 249
Other iOS Audio Tricks 253
Remote Control on iOS 253
IOS Hardware Hazards 254
Summary 254
Chapter 11 Core MIDI 257
MIDI Concepts 257
Core MIDI 258
Core MIDI Architecture 258
Core MIDI Terminology 258
Core MIDI Properties 260
MIDI Messages 260
Core Audio Driver
Instrument Units 261
Building a Simple MIDI Synthesizer 262
Connecting to MIDI 265
Handling MIDI Notifications and Events 267
Playing Your AUGraph 269
Creating MIDI Events 269
Setting Up the MIDIWifiSource Example 269
Setting Up MIDI over Wi-Fi 271
Sending MIDI Messages 273
Setting Up Your Mac to Receive Wi-Fi MIDI Data 275
Summary: MIDI Mastery … but Mobility? 277
Chapter 12 Coda 279
Still More Core Audio 279
Next Steps 280
Digital Signal Processing 280
Lion and iOS 5 281
AUSampler 281
Core Audio on iOS 5 285
The Core Audio Community 286
Summary: Sounds Good 287
Index 289
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