How did British Decca’s full frequency range recording improve record sound after World War II?

British Decca’s full frequency range recording (ffrr) improved record sound after World War II by dramatically extending the frequency range of discs. This technical advancement allowed for a higher level of fidelity, introducing many listeners to the possibilities of "hi-fi" sound.1

The impact of this process was notably demonstrated in 1946 with the recording of Igor Stravinsky’s Petrushka, conducted by Ernest Ansermet. By capturing a wider spectrum of sound, the ffrr process helped set a new standard for the phonograph and paved the way for the high-fidelity era of music recording.1