Microphones- a good quaity microphone helps produce quality input. A headset microphone has the advantage of keeping a consistent distance from the mouth whereby ensuring quality voice input. Tabletop and handheld microphones are good for getting other sounds. About a hand width is a good distance from a microphone for recording – further away collects too much background sound.To reduce the popping effect of some sounds use a pop filter between the microphone and speaker. A circular frame about 4 inches in diameter with thin stocking mesh stretched over int worth well. If outside use a wind sock (thick foam over the microphone).
Good advice in the manual – its easier to down grade sound quality – start with good quality.
1 Tool at a Time Webinar - Enhancing Audio with Audacity
One Tool at a Time:Enhancing Learning withAudacity<br />Lawrence Walker<br />University of Canterbury<br />Christchurch <br />New Zealand<br />Webinar 12 January 2011<br />
Content <br />Sound and its place in our environment<br />Quick run through on Audacity (screen demo)<br />Using audio self model<br />Working through an example using Audacity<br /> (Demonstration used 1.3 beta version)<br />
Clean sound in quality out<br />Microphones<br />Speaking into a microphone (see notes in note section)<br />Pop filters<br />Settings (see http://audacity.sourceforge.net/manual-1.2/index.html<br />
Setting up Audacity<br />Preferences - Windows – edit menu<br />Using copies of original sound files<br />Use the default CD quality for recording<br />
Walk through Screen<br />Editing controls<br />Controls when recording or playback<br />
Simple recording<br />Always start the recorder first<br />Turn off the reorder last<br />Easy to cut out extra material<br />
What to record<br />Children reading<br />Children speaking<br />Background noises ambient sounds <br />
Demonstration<br />Live demonstration showing editing of audio file to create an audio self model that can be played back to a student creating a Feedforward sound file.<br />Sequencing and coping with multiple tracks<br />Export as wav or mp3<br />
Audio Self Model<br />Prof Peter Dowrick – “Father of Video Self Modeling". Peter is a Professor of Disability Studies and Graduate Studies in Psychology at University of Hawaii, Professor Emeritus, University of Alaska; Honorary Professor of Psychology, University of Auckland. <br />Feedforward – “A common example of feedforward is a video of a child reading fluently—a passage from a book that he or she actually would read haltingly, requiring quite a bit of help in some of the words. This type of example might be achieved by the child "echoing" one phrase at a time, and video editing used to put all the phrases together as fluent speech. This method works well for physical and motor skills as well.”<br />From http://www.creating-futures.org/keystosuccess/feedforward/<br />Audio can be used in the same way to create an audio self model<br />
References<br />Audacity Manual and Tutorials Click here<br />Video Self Model and self model material click here<br />ACE Reading program – Prof Peter Dowrickclick here<br />ASHAsresouces on classroom acoustics<br />Contact: Lawrence.email@example.com<br />