Sounds can be re-synthesized to preserve loudness while hiding source identity

Evidence

In the procedure, the original sound, e.g. from a violin, is first analyzed by a Fourier-Time-Transform FTT as proposed by Terhardt. After spectral broadening, a sound is re-synthesized which shows the same spectral envelope and the same loudness-time-function as the original sound, but the information about the sound source is obscured. — Professor Dr.-Ing. Hugo Fastl, Professor Dr.-Ing. Eberhard, Psychoacoustics- Facts and Models, 1847

Categorization

Category: Causal Relationships

• DEFINE: Defines the FTT-based source-obscuring procedure as an experimental technique.
• SEED: This procedure resembles modern voice-cloning and AI audio filters that strip identifying timbre while keeping envelope.

Related

• Spectral broadening can mask source identity while preserving loudness-time function (similarity 0.88)
• Cognitive source identification can be experimentally decoupled from loudness perception (similarity 0.79)