The own audio recording experiments I used different production equipment are

I used an iPad an app to records the sound effect in the quiet room and the iPad different because makes sounds the sound recorder built in the iPad with the app.

A microphone is built in the iPad different to the HP4N is better microphone then the iPad.

I used a range of objects like my objects are leaves, twigs & the other people objects been used.

The objects I used leaves effects from the sound to the iPad & the twigs been used crack sound effect.