Steady-state flat-line sound is rare in nature and emerges only with the Industrial Revolution
Evidence
For our purposes, however, one general feature of insect sounds is of interest. More perhaps than any other sound in nature, they give the impression of being steady-state or flat-line sounds. In part this may be an illusion, for many insect sounds are pulse modulated or varied in other subtle ways, but despite the “grainy” effect such modulations create, the impression with many insects is of a continuous, unvarying monotony. Like the straight line in space, the flat line in sound rarely occurs in nature, and we will not encounter it again until the Industrial Revolution introduces the modern engine. — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 127
Categorization
- XREF: Sets up the flat-line/steady-state sound concept as a key acoustic term the reader wants; connects to later industrial sound chapters and to the notion of natural vs. machine soundscapes. — connects to: Before electroacoustics every sound was unique and unfalsifiable — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 328; Music and machines have traded acoustic effects both ways — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 405; A resonant cavity can isolate a single frequency from complex sound. — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 920 (+2 more)
- corroborated: 2 independent passages support this claim — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 127
Broader Connections
- Before electroacoustics every sound was unique and unfalsifiable
#expands(0.75) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 328 - Natural sound virtually never exceeds safe human hearing and vocal thresholds
#corroborates(0.70) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 676 - Music and machines have traded acoustic effects both ways
#expands(0.65) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 405 - A resonant cavity can isolate a single frequency from complex sound.
#expands(0.60) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 920