Topic 5Instructional audio

Topic 5Instructional audio

OWT 410OWT 410

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcast

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Digital audioDigital audio

• The audio captured with a microphone is sent to an Analogue-to-Digital Converter that can be in a soundcard.

• The audio is now stored as binary data (0’s and 1’s) on a hard disk or magnetic tape.

Part 1 of 2 …

2

Analogue-to-DigitalConverter

Digital audioDigital audio

• The audio stored as binary data is converted to analogue data (sound).

Part 2 of 2 …

2

Digital-to-AnalogueConverter

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcast

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Definition of podcastDefinition of podcast

• A podcast is simply a media file that can be downloaded from a website.

• Podcasts download quickly and can be placed onto a mobile device like an iPod.

• The term podcast is a combination of pod (Portable On Demand) and cast.

Part 1 of 1 …

3

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcast

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Types of podcastTypes of podcast

There are essentially four types of podcast, namely:

• Audio podcast: The term used for the online delivery of audio content. Example ...

• Video podcast: The term used for the online delivery of video content. Example ...

• Enhanced podcasts: Podcasts that combine audio podcast with synchronised images, similar to a narrated slideshow. Example ...

• Screencast: Is a digital recording of computer screen output as a video screen capture, often containing audio narration. Example ...

Part 1 of 1 …

5

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcast

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Tools for creating audio podcastsTools for creating audio podcasts

The following tools are required for creating an audio podcast:

• A computer with an Internet connection.

• A microphone and headset.

• Recording and editing software.

• MP3 converter.

Part 1 of 1 …

5

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcast

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Steps for creating an audio podcastSteps for creating an audio podcast

Creating an audio podcast includes the following steps:

• Preparing the script: The script is written out and rehearsed prior to recording.

• Recording and editing the sound file: Add effects, such as fade in and out and extra sound tracks.

• Publishing a podcast: Publish to your website or a web hosting and syndicating service that distributes podcasts across the Internet.

Part 1 of 1 …

4

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcast

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Text-to-speechText-to-speech

• Text To Speech (abbreviation: TTS): also called ‘Speech synthesis’ is the artificial production of human speech.

• The computer system used to produce TTS is called a speech engine.

• A Text to Speech engine transforms any text into speech in real time. It literally reads out loud any written information with a smooth and natural sounding voice. Example ...

Part 1 of 1 …

3

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcast

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Using podcasts in educationUsing podcasts in education

Uses of podcasting in learning and teaching are:

• Recording of lectures.

• Recording of special events e.g. outside speakers.

• Subject expert interviews

• Assisting auditory learners, and/or providing for a variety of learning styles.

• Specific “listening practice” for certain disciplines e.g. heart sounds in medicine, speech/phonetics.

• Listening to language – comprehension and pronunciation.

• Submitting oral reports and/or other assignments.

Part 1 of 2 …

8

Using podcasts in educationUsing podcasts in education

• Lecturers providing group feedback on assignments.

• Students capturing audio data as part of inquiry-based learning.

• Students recording notes from field work.

• Students engaging in other forms of creative activities.

Part 2 of 2 …

4

Instructional audioInstructional audio

Digital audio

Definition of podcast

Type of podcasts

Steps for creating audio podcasts

Tools for creating audio podcasts

Text-to-speech

Using podcasts in education

Test to speech examplesTest to speech examples

Natural Voices

Return

AT&T:

Interactive TTS: Loquendo

Demo Cepstal Voices: Cepstral

NeospeechNeospeech demo:

Podcast examplesPodcast examples

English Secondary Language

Return

Audio podcast:

Video podcast: Space shuttle

Enhanced podcast: 1190 AM Know

Quadratic GraphingScreencast: