Since 1960s, the music industry had been using a lot of drum replacers to imitate percussion instruments in records. The evolution of drum replacements allows easy access to a large variety of musical instruments in limited space, such as a studio. The newest version of drum replacers is introduced as Massey’s Drum Replacement Tool 2.0.
An interesting read:
The Next Generation of Drum Replacers
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I’m seeking info for sanctuary reverberation absorbsion material ( panels) and best placement.
There may be apps that do that. You can definitely find spectrum analyzers that will measure ultra low.
Is there an APP that can measure the ultra low frequency levels?