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GAUMONT FRANCO FILM
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GAUMONT FRANCO FILM
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Application filed by GAUMONT FRANCO FILMfiledCriticalGAUMONT FRANCO FILM
Application grantedgrantedCritical
Publication of FR824685ApublicationCriticalpatent/FR824685A/fr
H04S5/00—Pseudo-stereo systems, e.g. in which additional channel signals are derived from monophonic signals by means of phase shifting, time delay or reverberation
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Physics & Mathematics
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Engineering & Computer Science
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Acoustics & Sound
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Signal Processing
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FR824685D1936-10-281936-10-28Perfectionnements aux systèmes de reproduction sonore
ExpiredFR824685A
(fr)