Codes and Conventions of Radio Trailers

They use background music (sound bed)- relevant to topic

Use of a ranging accents and foreign languages

Scheduling at the end of the advert (voiceover)- time, day, channel

Clips from documentary may be used

Sound effects e.g sounds of animals i.e barking, a meow or the noise of rain to represent the weather underneath what the voiceover is talking about.

 

Clips from the programme may be used and are normally the most captivating and exciting, to entice the audience

Content of the trailer is relevant to the main themes of the documentary

Clear and well spoken voiceover  - the tone of voice suits the content, informal/formal to suit the target audience.

Informal language

Target audience is addressed by the voice over asking questions - involving the listeners - direct address by using 'you' 

Voiceover can be intercut throughout

Around 30-40 seconds 

May use a slogan