Inconspicuous everyday sounds vanish from the soundscape unnoticed by locals

Evidence

It is the less ostentatious soundmarks that need the special vigilance of the acoustic designer, for despite their originality or antique charm, they are more likely to be unceremoniously excised from the soundscape. Often it will take the visitor to point out the value or originality of a soundmark to a community; for local inhabitants it may be an inconspicuous keynote. — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 804

Categorization

• XREF: Extends the ‘keynote sound’ concept from earlier chapters; outsiders are needed to value what locals overlook. — connects to: Headphone listening reveals sounds ordinarily outside awareness — Pauline Oliveros, Deep Listening, 279; Keynote sounds are noticed only when they change or vanish — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 215; Background noise may prevent us from hearing an otherwise audible forest sound — Gordon Hempton, John Grossmann, One Square Inch of Silence- One Man’s…, 1010 (+11 more)
• corroborated: 2 independent passages support this claim — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 804

Broader Connections

• City dwellers become functionally deaf to a constant low background urban hum #expands (0.80) — George Michelsen Foy, Zero Decibels, 94
• Urbanization shortened the distance humans can hear and see #complicates (0.50) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 150
• Silence takes its meaning from surrounding sound #qualifies (0.45) — Schafer, Murray R, The Soundscape- Our Sonic Environment…, 864
• Loud natural sound can override and silence human speech #contradicts (0.40) — Gordon Hempton, John Grossmann, One Square Inch of Silence- One Man’s…, 1019