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GB157465A - Improvements in apparatus for recording sound - Google Patents

Improvements in apparatus for recording sound

Info

Publication number
GB157465A
GB157465A GB1397/21A GB139721A GB157465A GB 157465 A GB157465 A GB 157465A GB 1397/21 A GB1397/21 A GB 1397/21A GB 139721 A GB139721 A GB 139721A GB 157465 A GB157465 A GB 157465A
Authority
GB
United Kingdom
Prior art keywords
recording sound
sound
recording
Prior art date
Legal status (The legal status 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 status listed.)
Expired
Application number
GB1397/21A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB157465A publication Critical patent/GB157465A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R1/00—Details of transducers, loudspeakers or microphones
    • H04R1/44—Special adaptations for subaqueous use, e.g. for hydrophone

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
GB1397/21A 1919-04-05 1921-01-10 Improvements in apparatus for recording sound Expired GB157465A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE157465X 1919-04-05

Publications (1)

Publication Number Publication Date
GB157465A true GB157465A (en) 1921-12-08

Family

ID=5678722

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1397/21A Expired GB157465A (en) 1919-04-05 1921-01-10 Improvements in apparatus for recording sound

Country Status (1)

Country Link
GB (1) GB157465A (en)

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