Sound output from playback of an old blank/empty type 1 audio tape that has an undulating pattern of noise. The volume hasn't been adjusted, so this is true to the amount of noise present in a tape recording.
Rewind radio show on cassette-tape. Record with a technics m04 stereo cassette deck, rewind a cassette tape tdk a-60. Sound device realtek on-board (motherboard m5a 78l-m).
Medium tape measure drawn out and retracted. Two versions for retraction, slowly and letting go. Recorded on a tascam dr-100mkiii with an audio technica at875r shotgun mic in 24/48 mono.
Tape echo recorded from actual tape machine tesla pluto anp404 made in czechoslovakia in 70s. Sound has been captured through its speaker and my mxl770 condenser mic.