IT961424B - Apparato acustico per produrre toni ad audiofrequenza - Google Patents

Apparato acustico per produrre toni ad audiofrequenza

Info

Publication number
IT961424B
IT961424B IT5155172A IT5155172A IT961424B IT 961424 B IT961424 B IT 961424B IT 5155172 A IT5155172 A IT 5155172A IT 5155172 A IT5155172 A IT 5155172A IT 961424 B IT961424 B IT 961424B
Authority
IT
Italy
Prior art keywords
audio frequency
acoustic system
frequency tones
produce audio
produce
Prior art date
Application number
IT5155172A
Other languages
English (en)
Italian (it)
Original Assignee
Hansel M
Donovan E
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hansel M, Donovan E filed Critical Hansel M
Application granted granted Critical
Publication of IT961424B publication Critical patent/IT961424B/it

Links

Classifications

    • G—PHYSICS
    • G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
    • G09B19/00—Teaching not covered by other main groups of this subclass
    • G09B19/04—Speaking

Landscapes

  • Business, Economics & Management (AREA)
  • Engineering & Computer Science (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • General Health & Medical Sciences (AREA)
  • Entrepreneurship & Innovation (AREA)
  • Physics & Mathematics (AREA)
  • Educational Administration (AREA)
  • Educational Technology (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Electrotherapy Devices (AREA)
IT5155172A 1971-07-16 1972-07-14 Apparato acustico per produrre toni ad audiofrequenza IT961424B (it)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3344171 1971-07-16

Publications (1)

Publication Number Publication Date
IT961424B true IT961424B (it) 1973-12-10

Family

ID=10352999

Family Applications (1)

Application Number Title Priority Date Filing Date
IT5155172A IT961424B (it) 1971-07-16 1972-07-14 Apparato acustico per produrre toni ad audiofrequenza

Country Status (4)

Country Link
DE (1) DE2234742A1 (enExample)
FR (1) FR2146769A5 (enExample)
IT (1) IT961424B (enExample)
NL (1) NL7209740A (enExample)

Also Published As

Publication number Publication date
DE2234742A1 (de) 1973-02-01
FR2146769A5 (enExample) 1973-03-02
NL7209740A (enExample) 1973-01-18

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