All her Columbia discs were acoustical recordings.

This acoustical recording, unlike many others, has audible, clear, well recorded drums.

Orchestras were at a disadvantage in acoustical recordings, due to the limited frequency and dynamic range of the recording equipment.

Typical of acoustical recordings, the musicians had to crowd around a large horn that transferred the sounds to a recording machine.

This was an entirely mechanical process, often called "acoustical recording".

It is likely that all pre-1925 orchestral and band works were re-orchestrated to accommodate the limitations of acoustical recording.

The acoustical recordings of that time proved entirely unable to reproduce the sounds, so other methods were actively sought.

Carmen has been one of the most frequently recorded operas, dating back to a near-complete German acoustical recording in 1908.

The history of sound recording can cover mechanical, acoustical, electrical, magnetic and digital recording.

Tosca has been one of the most frequently recorded operas, dating back to a nearly complete acoustical recording in 1918.