Audio Recording Tips
By user581320 on Jun 20, 2010
UPK 3.6.1 provides the tools that you need to create and edit sound to deploy in your content without any specialized audio applications. You can add sound during topic recording using the Recorder or to an existing topic using the Topic Sound Recorder. Once recorded, you can use the Sound Editor to make adjustments to recordings. Recording good quality audio requires planning and care. Here are some important things to consider when adding audio to your UPK content.
Choose the microphone you use to record with care. Microphones come in many different types for various applications. Common computer headset style microphones can provide you with good quality sound if used properly. Use a microphone that utilizes noise canceling in its design, these are also known as directional or cardioid pick up pattern microphones. Make sure to practice with your microphone before doing the final recording. Place the microphone close to your mouth but not pointing directly at it to achieve a good signal level and avoid overloading the pickup.
The environment you choose to record in is as important as the microphone. Try to find a quiet place away from ambient and external noise. Listen to the room for its tone; determine if there is an air handling noise or other systems in the facility that may get picked up by the microphone. Once you pick a room, make sure to use it for each recording session needed for a given project. Audio recorded in different rooms that is played in sequence can be very distracting to the listener.
If you have recorded audio in a project you will need to choose to publish the project with audio in the publishing wizard. The publishing wizard provides you with an option for low, medium and high quality sound with the published content. Note that the higher the quality the larger the audio file and consequently the longer it will take the users to download the content over a network. While the audio files are compressed, even at the high quality, there is always a tradeoff between quality and file size. I suggest you experiment by publishing a sample using each quality setting to determine which setting is acceptable for your purposes. You should also consider the network connectivity of your users to determine if using a higher quality and larger file will impact their user experience when trying to access the content.
Peter Maravelias - Principal Product Strategy Manager UPK