4 免版税 音轨，用于"轮椅"

Hydraulic of wheelchair.

Recorded on marantz pmd661 with rode ntg-2. While working on a project i saw a man operating a machine with tank-treads designed for lifting wheelchairs up and down stairs. I took him aside and asked if i could record the internal motors and servos working.

Metal impact of a wheelchair with metal, recorded with a tascam dr100.

A 2005 chair squeak, recorded with a headset mic, processed in audacity.