In the last article we learned how to open a new audio input queue, allocate some buffers and enqueue the buffers for recording. Now we are going to see an extremely simple audio input callback function and learn how to start recording. 1 2 3 4 5 6 7 8 9 10 11 12 13 [...]
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Exploring iPhone Audio Part 2
March 25th, 2008 
Richard Last time we created the RecordState structure to keep track of the recording state. We also configured the recording parameter to record 8000 samples per second, 16 bit, mono audio. Now we can create the audio output queue with the following call: 1 2 3 4 5 6 7 8 OSStatus status = AudioQueueNewInput( &recordState.dataFormat, [...]
Exploring iPhone Audio Part 1
March 24th, 2008 Richard The iPhone has the ability to record and playback audio in various formats. This functionality has uses in a multitude of different applications. You could create a simple audio clip recording and playback application or a full blown audio conferencing system or software to record and automatically upload audio clips to a blog just to [...]
Picking Images with the iPhone SDK UIImagePickerController
March 19th, 2008 Richard The UIImagePickerController is the class you use when you want to import a picture from the iPhone photo library into your application. You can also use this class to open an interface that will allow you to take a picture and import that picture into your application. The very simple application I’m going to describe [...]
Creating a Web Page Tweaking Helper Tool(Part 3)
March 10th, 2008 Richard In this article we will add a profile dialog box to the Trails Web Tweaker applicaiton. This dialog box will be opened from the File – New…, Open… and Change… main menu options. Step 1 – In the Solution Explorer window right click on the WebTweaker project and select Add – Windows Form from the [...]
Creating a Web Page Tweaking Helper Tool(Part 2)
March 9th, 2008 Richard You can consider this Trail as beginner level. Those experienced with Visual Studio may want to skip ahead. I will be developing this application in C# using Visual Studio 2008. I generally use the professional edition but will be using the express edition for this Trail. You can download and use the Express edition for free. The application will [...]
