ACOUSTIC 101Here are some links to quick lessons and explanations of the Acoustic Science implemented in our products. PROPAGATION OF SOUNDSound is propagated in air. NOISE REDUCTIONReduction of reflected sounds. SOUND ISOLATIONBlocking potential transmission. WAVELENGTH & LOUDNESSFrequency changes sound wave length? RELATIVE LOUDNESSHow loud is loud? SOUND SEALANTSA small crack can compromise the sound isolation of an entire wall. SPEED OF SOUNDHow fast speed travels through various mediums. NOISE INTERFERENCE WITH SPEECHBackground noise can mask a conversation. SOUND ABSORPTION COEFFICIENTSHow various materials react to sound. EQUAL LOUDNESS CONTOURSOur ears do not perceive all sounds equally. SPEECH INTELLIGIBILITYthe percentage of speech heard correctly. NOISE SOURCESIdentifying obtrusive sound sources. PERCEPTION OF SOUNDHow loud is loud? SIGNAL TO NOISE RATIOHow much louder should a speaker be than the audience? METRIC CONVERSIONSMetric conversion chart. INVERSE SQUARE LAWThe further from the source the lower the sound. SPEECH DIRECTIVITYThe speaker’s orientation in a space. REVERBERATION TIME DEMONSTRATIONHow long does the reverberation or echo last? MASKING SOUND SYSTEMSMasking sound with sound. SPEECH PRIVACYThe ability to maintain confidentiality. REFLECTED SOUNDSound reflection off of hard surfaces. SOUND ABSORPTION & NRCNoise reduction. ADDING DECIBELS4 + 4 = 5? TRANSMISSION OF SOUNDSound generated on one side of a wall will energize the wall structure. SOUND TRANSMISSION CLASS (STC)How effectively a material transfers sound. RESONANT FREQUENCYHow an assembly reacts to various frequency energy. WHAT IS NOISE?Noise is unwanted sound.
