Patent ID: 8918197

Claim:
A database of “audio communication codes” for determining the optimal sound amplitudes to be relayed to the respective ears of the parties in an electronic audio communication, comprising “hearing thresholds”, “hearing loudness” and “voice intonation” tables in the spectral domain S, wherein the data elements of said tables may be related to one of the ears of the communicating person, and are enumerated in “SPL dB” units, wherein an element (A TL ) i of the “hearing thresholds” table represents the magnitude of amplification factors (A TL ) in the spectral domain, of sounds reaching one of the ears of a person, needed to bring his hearing level to a level, equivalent to that of a normal person, and, elements (A L ) j of the “hearing loudness” table represent the loudnesses extending from the minimal to the maximal tolerable loudness levels in the spectral domain (S) including the mid-level of loudness denoted as the “comfort” level L=C and, an element (A V ) k of the “voice intonation” table represents a distribution of the voice articulation loudness levels in the spectral domain (S) and wherein, any combination of the elements [(A T ) i , (A L ) j , (A V ) k ] of said tables may be represented by a unique code in the spectral domain (S), wherein a “multiplication” of two Codes [(A TL ) i , (A L ) j , (A V ) k ] and [(A TL ) l , (A L ) m , (A V ) n ] each attributable to a different person, is not commutative, and is defined for a “comfort” loudness level L i =C i by [( A TC ) i ,( A LC ) j ,( A V ) k ]*[( A TC ) l ,( A LC ) m ,( A V ) n ]=[( A TC ) i +( A LC ) j ]*( A V ) k [Σ S ( A V ) k /Σ S ( A TC +A LC ) m ] (I); or [( A TC ) l ,( A LC ) m ,( A V ) n ]*[( A TC ) i ,( A LC ) j ,( A V ) k ]=[( A TC ) l +( A LC ) m ]*( A V ) n [Σ S ( A V ) n /Σ S ( A TC +A LC ) k ] (II); where (I) gives the optimal sound level to be channeled to the ear of one party, and (II) gives the optimal sound level to be channeled to the ear of the other communicating party.